2010 Cadillac Truck Escalade EXT AWD V8-6.2L Page 1783
Engine Controls Schematics (See: Diagrams/Electrical Diagrams/Powertrain Management/System Diagram)
Connector End View Reference
Component Connector End Views (See: Diagrams/Connector Views)
Description and Operation
Fuel System Description (See: Powertrain Management/Computers and Control Systems/Description and Operation/Fuel System Description)
Electrical Information Reference
* Circuit Testing (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic Procedures/Circuit
Testing/Circuit Testing)
* Connector Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic
Procedures/Connector Repairs/Connector Repairs)
* Testing for Intermittent Conditions and Poor Connections (See: Testing and Inspection/Component Tests and General Diagnostics/General
Electrical Diagnostic Procedures/Circuit Testing/Testing for Intermittent Conditions and Poor Connections)
* Wiring Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic Procedures/Wiring
Repairs/Wiring Repairs)
DTC Type Reference
Powertrain Diagnostic Trouble Code (DTC) Type Definitions (See: Diagnostic Trouble Code Descriptions/Powertrain Diagnostic Trouble Code
(DTC) Type Definitions)
Scan Tool Reference
Control Module References (See: Testing and Inspection/Programming and Relearning)for scan tool information
Circuit/System Verification
Ignition ON, command the fuel pump ON and OFF using the scan tool ECM fuel pump output control. The fuel pump should turn ON and OFF.
Circuit/System Testing
1. Ignition OFF, disconnect the harness connector at the G12 fuel pump.
2. Connect a test lamp between the control circuit terminal D and ground.
3. Ignition ON, command the G12 fuel pump ON and OFF with a scan tool. The test lamp should turn ON and OFF, as commanded.
瀚慖f the test lamp is always ON, test the control circuit for a short to voltage. If the circuit tests normal, replace the K27 fuel pump control
module.
瀚慖f the test lamp is always OFF, test the control circuit for a short to ground or an open/high resistance. If the circuit tests normal, replace
the K27 fuel pump control module.
4. Ignition OFF, connect a test lamp between the control circuit terminal D and the low reference circuit terminal A.
5. Ignition ON, command the G12 fuel pump ON with a scan tool. The test lamp should illuminate.
瀚慖f the test lamp does not illuminate, test the low reference circuit terminal A for a short to voltage or an open/high resistance. If the circuit
tests normal, replace the K27 fuel pump control module.
6. If all circuits test normal, replace the fuel tank G12 fuel pump module.
Repair Instructions
Perform the Diagnostic Repair Verification (See: Verification Tests) after completing the diagnostic procedure.
* Fuel Tank Fuel Pump Module Replacement (2500 LWB - 43.5L (11.5 gal) Tank Rear) (See: Powertrain Management/Fuel Delivery and Air
Induction/Fuel Pump/Service and Repair/Fuel Tank Fuel Pump Module Replacement (2500 LWB - 43.5L (11.5 Gal) Tank Rear))Fuel Tank
Fuel Pump Module Replacement (2500 LWB - 98.4L (26 gal) Tank Front) (See: Powertrain Management/Fuel Delivery and Air
Induction/Fuel Pump/Service and Repair/Fuel Tank Fuel Pump Module Replacement (2500 LWB - 98.4L (26 Gal) Tank Front))Fuel Tank
Fuel Pump Module Replacement (1500 SWB - 98.4L (26 gal) Tank + E85) (See: Powertrain Management/Fuel Delivery and Air
Induction/Fuel Pump/Service and Repair/Fuel Tank Fuel Pump Module Replacement (1500 SWB - 98.4L (26 Gal) Tank + E85))Fuel Tank
Fuel Pump Module Replacement (1500 Series) (See: Powertrain Management/Fuel Delivery and Air Induction/Fuel Pump/Service and
Repair/Fuel Tank Fuel Pump Module Replacement (1500 Series))Fuel Tank Fuel Pump Module Replacement (1500 LWB - 117.3L (31 gal)
Tank + E85) (See: Powertrain Management/Fuel Delivery and Air Induction/Fuel Pump/Service and Repair/Fuel Tank Fuel Pump Module
Replacement (1500 LWB - 117.3L (31 Gal) Tank + E85))
* Control Module References (See: Testing and Inspection/Programming and Relearning)for fuel pump control module replacement, setup,
Thursday, October 31, 2019
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2010 Cadillac Truck Escalade ESV AWD V8-6.2L Page 1758
overview of the diagnostic approach.
* Diagnostic Procedure Instructions (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic Procedure
Instructions) provides an overview of each diagnostic category.
DTC Descriptor
DTC P15F2
- Engine Torque Command Circuit
Circuit/System Description
This diagnostic applies to internal microprocessor integrity conditions within the engine control module (ECM). The hybrid powertrain control
module (HPCM) sends an engine torque requested message to the ECM over GMLAN. The ECM monitors the data to verify that the indicated
engine torque requested calculation is correct. The ECM processor monitors the data to verify that the engine torque command is correct.
Conditions for Running the DTC
* The control module runs the program to detect an internal fault when the key is ON.
* Ignition voltage is 8-18V.
* DTC U1817 is not set.
Conditions for Setting the DTC
The control module has detected an internal malfunction.
Action Taken When the DTC Sets
* DTC P15F2 is a Type A DTC.
* The HPCM commands the battery energy control module (BECM) to open the high voltage contactor relays.
Conditions for Clearing the DTC
DTC P15F2 is a Type A DTC.
Reference Information
DTC Type Reference
Powertrain Diagnostic Trouble Code (DTC) Type Definitions (See: Diagnostic Trouble Code Descriptions/Powertrain Diagnostic Trouble Code
(DTC) Type Definitions)
Circuit/System Verification
1. Clear the DTC information.
2. Ignition OFF for 1 minute.
3. Ignition ON.
4. Retest for DTC P15F2.
Circuit/System Testing
Important: Diagnose and repair any communication DTCs prior to performing this testing.
Program the engine control module (ECM) with the latest software version and recheck for DTCs.
If the DTC resets after programming or if the ECM already contains the latest software version, replace the ECM.
Repair Instructions
Perform the Diagnostic Repair Verification (See: Verification Tests) after completing the diagnostic procedure.
Control Module References (See: Testing and Inspection/Programming and Relearning) for ECM replacement, setup, and programming.
Without 6.0L or 6.2L
DTC P0016 (Without 6.0L or 6.2L)
Diagnostic Instructions
* Perform the Diagnostic System Check - Vehicle (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic System
Check - Vehicle) prior to using this diagnostic procedure.
overview of the diagnostic approach.
* Diagnostic Procedure Instructions (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic Procedure
Instructions) provides an overview of each diagnostic category.
DTC Descriptor
DTC P15F2
- Engine Torque Command Circuit
Circuit/System Description
This diagnostic applies to internal microprocessor integrity conditions within the engine control module (ECM). The hybrid powertrain control
module (HPCM) sends an engine torque requested message to the ECM over GMLAN. The ECM monitors the data to verify that the indicated
engine torque requested calculation is correct. The ECM processor monitors the data to verify that the engine torque command is correct.
Conditions for Running the DTC
* The control module runs the program to detect an internal fault when the key is ON.
* Ignition voltage is 8-18V.
* DTC U1817 is not set.
Conditions for Setting the DTC
The control module has detected an internal malfunction.
Action Taken When the DTC Sets
* DTC P15F2 is a Type A DTC.
* The HPCM commands the battery energy control module (BECM) to open the high voltage contactor relays.
Conditions for Clearing the DTC
DTC P15F2 is a Type A DTC.
Reference Information
DTC Type Reference
Powertrain Diagnostic Trouble Code (DTC) Type Definitions (See: Diagnostic Trouble Code Descriptions/Powertrain Diagnostic Trouble Code
(DTC) Type Definitions)
Circuit/System Verification
1. Clear the DTC information.
2. Ignition OFF for 1 minute.
3. Ignition ON.
4. Retest for DTC P15F2.
Circuit/System Testing
Important: Diagnose and repair any communication DTCs prior to performing this testing.
Program the engine control module (ECM) with the latest software version and recheck for DTCs.
If the DTC resets after programming or if the ECM already contains the latest software version, replace the ECM.
Repair Instructions
Perform the Diagnostic Repair Verification (See: Verification Tests) after completing the diagnostic procedure.
Control Module References (See: Testing and Inspection/Programming and Relearning) for ECM replacement, setup, and programming.
Without 6.0L or 6.2L
DTC P0016 (Without 6.0L or 6.2L)
Diagnostic Instructions
* Perform the Diagnostic System Check - Vehicle (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic System
Check - Vehicle) prior to using this diagnostic procedure.
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2010 Cadillac Truck Escalade ESV AWD V8-6.2L Page 590
4. Test for 2.0 - 8.0 Ohms between control circuit terminal 14 and control circuit terminal 11.
锟斤拷If less than the specified range, test for a short between the control circuits. If the circuits test normal, replace the seat cushion heater
element.
锟斤拷If greater than the specified range, test the control circuits for an open/high resistance. If the circuits test normal replace the seat cushion
heater element.
5. Disconnect the X2, X5 harness connectors at the MSM.
6. Test for 850 Ohms - 300 kOhms between the signal circuit terminal 1 X5 and the low reference circuit terminal 3 X2.
锟斤拷If less than the specified range, test for a short between the signal and low reference circuits. If the circuits test normal, replace the seat
cushion heater element/temperature sensor.
锟斤拷If greater than the specified range, test the signal and low reference circuits for a short to voltage or an open/high resistance. If the circuits
test normal, replace the seat cushion heater element/temperature sensor.
7. Connect the X1, X2, X5 harness connectors at the MSM.
8. Disconnect the harness connector at the seat cushion heater element/temperature sensor.
9. Ignition ON, test for 4.8 - 5.2 V between the signal circuit terminal C and ground.
锟斤拷If less than the specified range, test the signal circuit for a short to ground or an open/high resistance. If the circuit tests normal, replace
the MSM.
锟斤拷If greater than the specified range, test the signal circuit for a short to voltage. If the circuit tests normal, replace the MSM.
10. If all circuits test normal, replace the MSM.
B2430 0A, B2430 0B, B2430 0C, B2430 0D, B2430 0E, B2430 04, or B2430 1F
1. Ignition OFF, disconnect the X3 harness connector at the MSM.
2. Ignition ON, verify that a test lamp illuminates between the B+ circuit terminal 5 and ground.
锟斤拷If the test lamp does not illuminate, test the B+ circuit for a short to ground or an open/high resistance.
3. Ignition OFF, connect the X3 harness connector at the MSM and disconnect the X1, X4 harness connectors at the MSM.
Important: Element resistance must be measured twice to ensure that all failure conditions are simulated. First with the seat
unoccupied, then with the seat occupied.
4. Test for 2.0 - 8.0 Ohms between control circuit terminal 6 X1 and control circuit terminal 14 X4.
锟斤拷If less than the specified range, test for a short between the control circuits. If the circuits test normal, replace the seat cushion heater
element.
锟斤拷If greater than the specified range, test the control circuits for an open/high resistance. If the circuits test normal replace the seat cushion
heater element.
5. Disconnect the X2, X5 harness connectors at the MSM.
6. Test for 850 Ohms - 300 kOhms between the signal circuit terminal 2 X5 and the low reference circuit terminal 6 X2.
锟斤拷If less than the specified range, test for a short between the signal and low reference circuits. If the circuits test normal, replace the seat
cushion heater element/temperature sensor.
锟斤拷If greater than the specified range, test the signal and low reference circuits for a short to voltage or an open/high resistance. If the circuits
test normal, replace the seat cushion heater element/temperature sensor.
7. Connect the X1, X2, X4, X5 harness connectors at the MSM.
8. Disconnect the harness connector at the seat cushion heater element/temperature sensor.
9. Ignition ON, test for 4.8 - 5.2 V between the signal circuit terminal C and ground.
锟斤拷If greater than the specified range, test the signal circuit for a short to voltage. If the circuit tests normal, replace the MSM.
锟斤拷If less than the specified range, test the signal circuit for a short to ground or an open/high resistance. If the circuit tests normal, replace
the MSM.
10. If all circuits test normal, replace the MSM.
Repair Instructions
Perform the Diagnostic Repair Verification (See: Verification Tests) after completing the diagnostic procedure.
* Driver or Passenger Seat Cushion Heater Replacement (without HP2) ()Driver or Passenger Seat Cushion Heater Replacement (with HP2)
()
* Control Module References (See: Testing and Inspection/Programming and Relearning) for the MSM replacement, setup, and programming
4. Test for 2.0 - 8.0 Ohms between control circuit terminal 14 and control circuit terminal 11.
锟斤拷If less than the specified range, test for a short between the control circuits. If the circuits test normal, replace the seat cushion heater
element.
锟斤拷If greater than the specified range, test the control circuits for an open/high resistance. If the circuits test normal replace the seat cushion
heater element.
5. Disconnect the X2, X5 harness connectors at the MSM.
6. Test for 850 Ohms - 300 kOhms between the signal circuit terminal 1 X5 and the low reference circuit terminal 3 X2.
锟斤拷If less than the specified range, test for a short between the signal and low reference circuits. If the circuits test normal, replace the seat
cushion heater element/temperature sensor.
锟斤拷If greater than the specified range, test the signal and low reference circuits for a short to voltage or an open/high resistance. If the circuits
test normal, replace the seat cushion heater element/temperature sensor.
7. Connect the X1, X2, X5 harness connectors at the MSM.
8. Disconnect the harness connector at the seat cushion heater element/temperature sensor.
9. Ignition ON, test for 4.8 - 5.2 V between the signal circuit terminal C and ground.
锟斤拷If less than the specified range, test the signal circuit for a short to ground or an open/high resistance. If the circuit tests normal, replace
the MSM.
锟斤拷If greater than the specified range, test the signal circuit for a short to voltage. If the circuit tests normal, replace the MSM.
10. If all circuits test normal, replace the MSM.
B2430 0A, B2430 0B, B2430 0C, B2430 0D, B2430 0E, B2430 04, or B2430 1F
1. Ignition OFF, disconnect the X3 harness connector at the MSM.
2. Ignition ON, verify that a test lamp illuminates between the B+ circuit terminal 5 and ground.
锟斤拷If the test lamp does not illuminate, test the B+ circuit for a short to ground or an open/high resistance.
3. Ignition OFF, connect the X3 harness connector at the MSM and disconnect the X1, X4 harness connectors at the MSM.
Important: Element resistance must be measured twice to ensure that all failure conditions are simulated. First with the seat
unoccupied, then with the seat occupied.
4. Test for 2.0 - 8.0 Ohms between control circuit terminal 6 X1 and control circuit terminal 14 X4.
锟斤拷If less than the specified range, test for a short between the control circuits. If the circuits test normal, replace the seat cushion heater
element.
锟斤拷If greater than the specified range, test the control circuits for an open/high resistance. If the circuits test normal replace the seat cushion
heater element.
5. Disconnect the X2, X5 harness connectors at the MSM.
6. Test for 850 Ohms - 300 kOhms between the signal circuit terminal 2 X5 and the low reference circuit terminal 6 X2.
锟斤拷If less than the specified range, test for a short between the signal and low reference circuits. If the circuits test normal, replace the seat
cushion heater element/temperature sensor.
锟斤拷If greater than the specified range, test the signal and low reference circuits for a short to voltage or an open/high resistance. If the circuits
test normal, replace the seat cushion heater element/temperature sensor.
7. Connect the X1, X2, X4, X5 harness connectors at the MSM.
8. Disconnect the harness connector at the seat cushion heater element/temperature sensor.
9. Ignition ON, test for 4.8 - 5.2 V between the signal circuit terminal C and ground.
锟斤拷If greater than the specified range, test the signal circuit for a short to voltage. If the circuit tests normal, replace the MSM.
锟斤拷If less than the specified range, test the signal circuit for a short to ground or an open/high resistance. If the circuit tests normal, replace
the MSM.
10. If all circuits test normal, replace the MSM.
Repair Instructions
Perform the Diagnostic Repair Verification (See: Verification Tests) after completing the diagnostic procedure.
* Driver or Passenger Seat Cushion Heater Replacement (without HP2) ()Driver or Passenger Seat Cushion Heater Replacement (with HP2)
()
* Control Module References (See: Testing and Inspection/Programming and Relearning) for the MSM replacement, setup, and programming
2010 Cadillac Truck Escalade EXT AWD V8-6.2L Page 1782
2010 Cadillac Truck Escalade EXT AWD V8-6.2L Page 1782
and programming
P023F
DTC P0231, P0232, or P023F
Diagnostic Instructions
* Perform the Diagnostic System Check - Vehicle (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic System
Check - Vehicle) prior to using this diagnostic procedure.
* Review Strategy Based Diagnosis (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Strategy Based Diagnosis) for an
overview of the diagnostic approach.
* Diagnostic Procedure Instructions (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic Procedure
Instructions)provides an overview of each diagnostic category.
DTC Descriptors
DTC P0231
- Fuel Pump Control Circuit Low Voltage
DTC P0232
- Fuel Pump Control Circuit High Voltage
DTC P023F
- Fuel Pump Control Circuit
Diagnostic Fault Information
Circuit/System Description
The engine control module (ECM) supplies voltage to the fuel pump control module when the ECM detects that the ignition is on. The voltage from
the ECM to the fuel pump control module remains active for 2 seconds, unless the engine is in crank or run. While this voltage is being received,
the fuel pump control module supplies a varying voltage to the fuel tank pump module in order to maintain the desired fuel rail pressure.
Conditions for Running the DTC
P0231, P023F
The ignition voltage is between 9-18 V.
P0232
The control enable voltage signal supplied for the ECM to fuel pump control module is inactive for 4 seconds after engine has been shut off.
Conditions for Setting the DTC
The fuel pump control module detects a fault on the fuel pump voltage circuit that is less than 4 V or greater than 4.5 V.
Action Taken When the DTC Sets
DTCs P0231, P0232, and P023F are Type A DTCs.
Conditions for Clearing the DTC
DTCs P0231, P0232, and P023F are Type A DTCs.
Diagnostic Aids
Using the Failure Records data may help locate an intermittent condition. If you cannot duplicate the DTC, the information in the Failure Records
can help determine how many miles since the DTC set. The Fail Counter and Pass Counter can help determine how many ignition cycles that the
diagnostic test reported a pass and/or a fail.
and programming
P023F
DTC P0231, P0232, or P023F
Diagnostic Instructions
* Perform the Diagnostic System Check - Vehicle (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic System
Check - Vehicle) prior to using this diagnostic procedure.
* Review Strategy Based Diagnosis (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Strategy Based Diagnosis) for an
overview of the diagnostic approach.
* Diagnostic Procedure Instructions (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic Procedure
Instructions)provides an overview of each diagnostic category.
DTC Descriptors
DTC P0231
- Fuel Pump Control Circuit Low Voltage
DTC P0232
- Fuel Pump Control Circuit High Voltage
DTC P023F
- Fuel Pump Control Circuit
Diagnostic Fault Information
Circuit/System Description
The engine control module (ECM) supplies voltage to the fuel pump control module when the ECM detects that the ignition is on. The voltage from
the ECM to the fuel pump control module remains active for 2 seconds, unless the engine is in crank or run. While this voltage is being received,
the fuel pump control module supplies a varying voltage to the fuel tank pump module in order to maintain the desired fuel rail pressure.
Conditions for Running the DTC
P0231, P023F
The ignition voltage is between 9-18 V.
P0232
The control enable voltage signal supplied for the ECM to fuel pump control module is inactive for 4 seconds after engine has been shut off.
Conditions for Setting the DTC
The fuel pump control module detects a fault on the fuel pump voltage circuit that is less than 4 V or greater than 4.5 V.
Action Taken When the DTC Sets
DTCs P0231, P0232, and P023F are Type A DTCs.
Conditions for Clearing the DTC
DTCs P0231, P0232, and P023F are Type A DTCs.
Diagnostic Aids
Using the Failure Records data may help locate an intermittent condition. If you cannot duplicate the DTC, the information in the Failure Records
can help determine how many miles since the DTC set. The Fail Counter and Pass Counter can help determine how many ignition cycles that the
diagnostic test reported a pass and/or a fail.
2010 Cadillac Truck Escalade ESV AWD V8-6.2L Page 1757
2010 Cadillac Truck Escalade ESV AWD V8-6.2L Page 1757
Check - Vehicle) prior to using this diagnostic procedure.
* Review Strategy Based Diagnosis (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Strategy Based Diagnosis) for an
overview of the diagnostic approach.
* Diagnostic Procedure Instructions (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic Procedure
Instructions) provides an overview of each diagnostic category.
DTC Descriptor
DTC P15F1
- Axle Torque Request Circuit
Circuit/System Description
This diagnostic applies to internal microprocessor integrity conditions within the hybrid powertrain control module (HPCM). The HPCM monitors
its ability to read and write to the memory. The HPCM processor monitors the data to verify that the indicated axle torque requested calculation is
correct.
Conditions for Running the DTC
* The control module runs the program to detect an internal fault when the key is ON.
* Ignition voltage is 8-18V.
Conditions for Setting the DTC
The control module has detected an internal malfunction.
Action Taken When the DTC Sets
* DTC P15F1 is a Type A DTC.
* The HPCM commands the battery energy control module (BECM) to open the high voltage contactor relays.
Conditions for Clearing the DTC
DTC P15F1 is a Type A DTC.
Reference Information
DTC Type Reference
Powertrain Diagnostic Trouble Code (DTC) Type Definitions (See: Diagnostic Trouble Code Descriptions/Powertrain Diagnostic Trouble Code
(DTC) Type Definitions)
Circuit/System Verification
1. Clear the DTC information.
2. Ignition OFF for 1 minute.
3. Ignition ON.
4. Retest for DTC P15F1.
Circuit/System Testing
Program the PIM with the latest software version and recheck for DTCs.
If the DTC resets after programming or if the PIM already contains the latest software version, replace the PIM.
Repair Instructions
Perform the Diagnostic Repair Verification (See: Verification Tests) after completing the diagnostic procedure.
Control Module References (See: Testing and Inspection/Programming and Relearning) for PIM replacement, setup, and programming.
P15F2
DTC P15F2
Diagnostic Instructions
* Perform the Diagnostic System Check - Vehicle (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic System
Check - Vehicle) prior to using this diagnostic procedure.
* Review Strategy Based Diagnosis (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Strategy Based Diagnosis) for an
Check - Vehicle) prior to using this diagnostic procedure.
* Review Strategy Based Diagnosis (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Strategy Based Diagnosis) for an
overview of the diagnostic approach.
* Diagnostic Procedure Instructions (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic Procedure
Instructions) provides an overview of each diagnostic category.
DTC Descriptor
DTC P15F1
- Axle Torque Request Circuit
Circuit/System Description
This diagnostic applies to internal microprocessor integrity conditions within the hybrid powertrain control module (HPCM). The HPCM monitors
its ability to read and write to the memory. The HPCM processor monitors the data to verify that the indicated axle torque requested calculation is
correct.
Conditions for Running the DTC
* The control module runs the program to detect an internal fault when the key is ON.
* Ignition voltage is 8-18V.
Conditions for Setting the DTC
The control module has detected an internal malfunction.
Action Taken When the DTC Sets
* DTC P15F1 is a Type A DTC.
* The HPCM commands the battery energy control module (BECM) to open the high voltage contactor relays.
Conditions for Clearing the DTC
DTC P15F1 is a Type A DTC.
Reference Information
DTC Type Reference
Powertrain Diagnostic Trouble Code (DTC) Type Definitions (See: Diagnostic Trouble Code Descriptions/Powertrain Diagnostic Trouble Code
(DTC) Type Definitions)
Circuit/System Verification
1. Clear the DTC information.
2. Ignition OFF for 1 minute.
3. Ignition ON.
4. Retest for DTC P15F1.
Circuit/System Testing
Program the PIM with the latest software version and recheck for DTCs.
If the DTC resets after programming or if the PIM already contains the latest software version, replace the PIM.
Repair Instructions
Perform the Diagnostic Repair Verification (See: Verification Tests) after completing the diagnostic procedure.
Control Module References (See: Testing and Inspection/Programming and Relearning) for PIM replacement, setup, and programming.
P15F2
DTC P15F2
Diagnostic Instructions
* Perform the Diagnostic System Check - Vehicle (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic System
Check - Vehicle) prior to using this diagnostic procedure.
* Review Strategy Based Diagnosis (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Strategy Based Diagnosis) for an
2010 Cadillac Truck Escalade ESV AWD V8-6.2L Page 59
2010 Cadillac Truck Escalade ESV AWD V8-6.2L Page 59
P0BEF - P0C13
P0BEF - P0C13
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2010 Cadillac Truck Escalade EXT AWD V8-6.2L Page 1781
diagnostic test reported a pass and/or a fail.
Reference Information
Schematic Reference
Engine Controls Schematics (See: Diagrams/Electrical Diagrams/Powertrain Management/System Diagram)
Connector End View Reference
Component Connector End Views (See: Diagrams/Connector Views)
Description and Operation
Fuel System Description (See: Powertrain Management/Computers and Control Systems/Description and Operation/Fuel System Description)
Electrical Information Reference
* Circuit Testing (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic Procedures/Circuit
Testing/Circuit Testing)
* Testing for Intermittent Conditions and Poor Connections (See: Testing and Inspection/Component Tests and General Diagnostics/General
Electrical Diagnostic Procedures/Circuit Testing/Testing for Intermittent Conditions and Poor Connections)
* Connector Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic
Procedures/Connector Repairs/Connector Repairs)
* Wiring Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic Procedures/Wiring
Repairs/Wiring Repairs)
DTC Type Reference
Powertrain Diagnostic Trouble Code (DTC) Type Definitions (See: Diagnostic Trouble Code Descriptions/Powertrain Diagnostic Trouble Code
(DTC) Type Definitions)
Scan Tool Reference
Control Module References (See: Testing and Inspection/Programming and Relearning) for scan tool information
Circuit/System Testing
Note: Verify that the fuel tank is not empty. Only perform this diagnostic if there is at least 2 gallons of fuel in the fuel tank. Clear the DTC, and
start and run the engine. Verify that the DTC P0118B resets before proceeding with the circuit system testing. If the DTC does not reset, refer to
diagnostic aids.
1. Ignition OFF, disconnect the harness connector at the B47 fuel pressure sensor.
2. Ignition OFF, test for less than 1 ohm between the low reference circuit terminal 2 and ground.
瀚慖f greater than the specified range, test the low reference circuit for an open/high resistance. If the circuit tests normal, replace the K27
fuel pump flow control module.
3. Ignition ON, test for 4.8-5.2 V between the B47 fuel pressure sensor 5 V reference circuit terminal 3 and ground.
瀚慖f less than the specified range, test the 5 V reference circuit for a short to ground or an open/high resistance. If the circuit tests normal,
replace the K27 fuel pump flow control module.
瀚慖f greater than the specified range, test the 5 V reference circuit for a short to voltage. If the circuit tests normal, replace the K27 fuel
pump flow control module.
4. Verify the scan tool 5 V reference is less than 1 V.
瀚慖f greater than the specified range, test the signal circuit terminal 1 for a short to voltage. If the circuit tests normal, replace the K27 fuel
pump flow control module.
5. Install a 3 A fused jumper wire between the signal circuit terminal 1 and the 5 V reference circuit terminal 3. Verify the scan tool 5 V
reference is greater than 4.8 V.
瀚慖f less than the specified range, test the signal circuit for a short to ground or an open/high resistance. If the circuit tests normal, replace
the K27 fuel pump flow control module.
6. If all circuits test normal, replace the B47 fuel pressure sensor.
Repair Instructions
Perform the Diagnostic Repair Verification (See: Verification Tests) after completing the diagnostic procedure.
* Fuel Pressure Sensor Replacement (See: Powertrain Management/Fuel Delivery and Air Induction/Fuel Pressure Sensor/Switch/Service and
Repair)
* Control Module References (See: Testing and Inspection/Programming and Relearning) for fuel pump control module replacement, setup,
diagnostic test reported a pass and/or a fail.
Reference Information
Schematic Reference
Engine Controls Schematics (See: Diagrams/Electrical Diagrams/Powertrain Management/System Diagram)
Connector End View Reference
Component Connector End Views (See: Diagrams/Connector Views)
Description and Operation
Fuel System Description (See: Powertrain Management/Computers and Control Systems/Description and Operation/Fuel System Description)
Electrical Information Reference
* Circuit Testing (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic Procedures/Circuit
Testing/Circuit Testing)
* Testing for Intermittent Conditions and Poor Connections (See: Testing and Inspection/Component Tests and General Diagnostics/General
Electrical Diagnostic Procedures/Circuit Testing/Testing for Intermittent Conditions and Poor Connections)
* Connector Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic
Procedures/Connector Repairs/Connector Repairs)
* Wiring Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic Procedures/Wiring
Repairs/Wiring Repairs)
DTC Type Reference
Powertrain Diagnostic Trouble Code (DTC) Type Definitions (See: Diagnostic Trouble Code Descriptions/Powertrain Diagnostic Trouble Code
(DTC) Type Definitions)
Scan Tool Reference
Control Module References (See: Testing and Inspection/Programming and Relearning) for scan tool information
Circuit/System Testing
Note: Verify that the fuel tank is not empty. Only perform this diagnostic if there is at least 2 gallons of fuel in the fuel tank. Clear the DTC, and
start and run the engine. Verify that the DTC P0118B resets before proceeding with the circuit system testing. If the DTC does not reset, refer to
diagnostic aids.
1. Ignition OFF, disconnect the harness connector at the B47 fuel pressure sensor.
2. Ignition OFF, test for less than 1 ohm between the low reference circuit terminal 2 and ground.
瀚慖f greater than the specified range, test the low reference circuit for an open/high resistance. If the circuit tests normal, replace the K27
fuel pump flow control module.
3. Ignition ON, test for 4.8-5.2 V between the B47 fuel pressure sensor 5 V reference circuit terminal 3 and ground.
瀚慖f less than the specified range, test the 5 V reference circuit for a short to ground or an open/high resistance. If the circuit tests normal,
replace the K27 fuel pump flow control module.
瀚慖f greater than the specified range, test the 5 V reference circuit for a short to voltage. If the circuit tests normal, replace the K27 fuel
pump flow control module.
4. Verify the scan tool 5 V reference is less than 1 V.
瀚慖f greater than the specified range, test the signal circuit terminal 1 for a short to voltage. If the circuit tests normal, replace the K27 fuel
pump flow control module.
5. Install a 3 A fused jumper wire between the signal circuit terminal 1 and the 5 V reference circuit terminal 3. Verify the scan tool 5 V
reference is greater than 4.8 V.
瀚慖f less than the specified range, test the signal circuit for a short to ground or an open/high resistance. If the circuit tests normal, replace
the K27 fuel pump flow control module.
6. If all circuits test normal, replace the B47 fuel pressure sensor.
Repair Instructions
Perform the Diagnostic Repair Verification (See: Verification Tests) after completing the diagnostic procedure.
* Fuel Pressure Sensor Replacement (See: Powertrain Management/Fuel Delivery and Air Induction/Fuel Pressure Sensor/Switch/Service and
Repair)
* Control Module References (See: Testing and Inspection/Programming and Relearning) for fuel pump control module replacement, setup,
2010 Cadillac Truck Escalade ESV AWD V8-6.2L Page 1756
2010 Cadillac Truck Escalade ESV AWD V8-6.2L Page 1756
* Perform the Diagnostic System Check - Vehicle (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic System
Check - Vehicle) prior to using this diagnostic procedure.
* Review Strategy Based Diagnosis (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Strategy Based Diagnosis) for an
overview of the diagnostic approach.
* Diagnostic Procedure Instructions (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic Procedure
Instructions) provides an overview of each diagnostic category.
DTC Descriptor
DTC P15F0
- Engine Torque Delivered Circuit
Circuit/System Description
This diagnostic applies to internal microprocessor integrity conditions within the hybrid powertrain control module (HPCM). The HPCM monitors
its ability to read and write to the memory. The HPCM processor monitors the data to verify that the indicated engine torque delivered calculation is
correct.
Conditions for Running the DTC
* The control module runs the program to detect an internal fault when the key is ON for 5 seconds.
* Ignition voltage is 8-18V.
Conditions for Setting the DTC
The control module has detected an internal malfunction.
Action Taken When the DTC Sets
* DTC P15F0 is a Type A DTC.
* The HPCM commands the battery energy control module (BECM) to open the high voltage contactor relays.
Conditions for Clearing the DTC
DTC P15F0 is a Type A DTC.
Reference Information
DTC Type Reference
Powertrain Diagnostic Trouble Code (DTC) Type Definitions (See: Diagnostic Trouble Code Descriptions/Powertrain Diagnostic Trouble Code
(DTC) Type Definitions)
Circuit/System Verification
1. Clear the DTC information.
2. Ignition OFF for 1 minute.
3. Ignition ON.
4. Retest for DTCs P15F0.
Circuit/System Testing
Program the PIM with the latest software version and recheck for DTCs.
If the DTC resets after programming or if the PIM already contains the latest software version, replace the PIM.
Repair Instructions
Perform the Diagnostic Repair Verification (See: Verification Tests) after completing the diagnostic procedure.
Control Module References (See: Testing and Inspection/Programming and Relearning) for PIM replacement, setup, and programming.
P15F1
DTC P15F1
Diagnostic Instructions
* Perform the Diagnostic System Check - Vehicle (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic System
* Perform the Diagnostic System Check - Vehicle (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic System
Check - Vehicle) prior to using this diagnostic procedure.
* Review Strategy Based Diagnosis (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Strategy Based Diagnosis) for an
overview of the diagnostic approach.
* Diagnostic Procedure Instructions (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic Procedure
Instructions) provides an overview of each diagnostic category.
DTC Descriptor
DTC P15F0
- Engine Torque Delivered Circuit
Circuit/System Description
This diagnostic applies to internal microprocessor integrity conditions within the hybrid powertrain control module (HPCM). The HPCM monitors
its ability to read and write to the memory. The HPCM processor monitors the data to verify that the indicated engine torque delivered calculation is
correct.
Conditions for Running the DTC
* The control module runs the program to detect an internal fault when the key is ON for 5 seconds.
* Ignition voltage is 8-18V.
Conditions for Setting the DTC
The control module has detected an internal malfunction.
Action Taken When the DTC Sets
* DTC P15F0 is a Type A DTC.
* The HPCM commands the battery energy control module (BECM) to open the high voltage contactor relays.
Conditions for Clearing the DTC
DTC P15F0 is a Type A DTC.
Reference Information
DTC Type Reference
Powertrain Diagnostic Trouble Code (DTC) Type Definitions (See: Diagnostic Trouble Code Descriptions/Powertrain Diagnostic Trouble Code
(DTC) Type Definitions)
Circuit/System Verification
1. Clear the DTC information.
2. Ignition OFF for 1 minute.
3. Ignition ON.
4. Retest for DTCs P15F0.
Circuit/System Testing
Program the PIM with the latest software version and recheck for DTCs.
If the DTC resets after programming or if the PIM already contains the latest software version, replace the PIM.
Repair Instructions
Perform the Diagnostic Repair Verification (See: Verification Tests) after completing the diagnostic procedure.
Control Module References (See: Testing and Inspection/Programming and Relearning) for PIM replacement, setup, and programming.
P15F1
DTC P15F1
Diagnostic Instructions
* Perform the Diagnostic System Check - Vehicle (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic System
2010 Cadillac Truck Escalade ESV AWD V8-6.2L Page 589
2010 Cadillac Truck Escalade ESV AWD V8-6.2L Page 589
The module detects that the set point temperature has not been reached within 8.5 minutes.
B2425 0B, B2425 0E, B2430 0B, or B2430 0E
By measuring output current, the module calculates that the heating element resistance is below the minimum resistance.
B2425 0C, B2425 0D, B2430 0C, or B2430 0D
By measuring output current, the module calculates that the heating element resistance is above the maximum resistance.
B2425 1F or B2430 1F
The temperature sensor voltage is erratic or changes suddenly.
Action Taken When the DTC Sets
The heated seat cushion function for the affected seat will be disabled.
Conditions for Clearing the DTC
* The current DTC clears when the malfunction is no longer present, and the power mode changes to OFF then back to ACC or RUN.
* The history DTC will clear after 50 consecutive fault-free ignition cycles have occurred.
Reference Information
Schematic Reference
Heated/Cooled Seat Schematics ()
Connector End View Reference
Component Connector End Views (See: Diagrams/Connector Views)
Description and Operation
Heated Seats Description and Operation (KA1) ()Heated Seats Description and Operation (KA6) ()
Electrical Information Reference
* Circuit Testing (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic Procedures/Circuit
Testing/Circuit Testing)
* Connector Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic
Procedures/Connector Repairs/Connector Repairs)
* Testing for Intermittent Conditions and Poor Connections (See: Testing and Inspection/Component Tests and General Diagnostics/General
Electrical Diagnostic Procedures/Circuit Testing/Testing for Intermittent Conditions and Poor Connections)
* Wiring Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic Procedures/Wiring
Repairs/Wiring Repairs)
Scan Tool Reference
Control Module References (See: Testing and Inspection/Programming and Relearning) for scan tool information
Circuit/System Verification
Verify the type of vehicle and the heated seat system for which the DTC set.
If the DTC set in a vehicle equipped with memory, refer to Circuit/System Testing below.
If the DTC set in a hybrid vehicle without memory, refer to DTC B2425 or B2430 (HP2 w/o memory).
If the DTC set in a non-hybrid vehicle without memory, refer to DTC B2425 or B2430 (Dealer installed).
If the DTC set in the rear heated seat module, refer to DTC B2425 or B2430 (Rear seat).
Circuit/System Testing
B2425 0A, B2425 0B, B2425 0C, B2425 0D, B2425 0E, B2425 04, or B2425 1F
1. Ignition OFF, disconnect the X3 harness connector at the MSM.
2. Ignition ON, verify that a test lamp illuminates between the B+ circuit terminal 5 and ground.
锟斤拷If the test lamp does not illuminate, test the B+ circuit for a short to ground or an open/high resistance.
3. Ignition OFF, connect the X3 harness connector at the MSM and disconnect the X1 harness connector at the MSM.
Important: Element resistance must be measured twice to ensure that all failure conditions are simulated. First with the seat
unoccupied, then with the seat occupied.
The module detects that the set point temperature has not been reached within 8.5 minutes.
B2425 0B, B2425 0E, B2430 0B, or B2430 0E
By measuring output current, the module calculates that the heating element resistance is below the minimum resistance.
B2425 0C, B2425 0D, B2430 0C, or B2430 0D
By measuring output current, the module calculates that the heating element resistance is above the maximum resistance.
B2425 1F or B2430 1F
The temperature sensor voltage is erratic or changes suddenly.
Action Taken When the DTC Sets
The heated seat cushion function for the affected seat will be disabled.
Conditions for Clearing the DTC
* The current DTC clears when the malfunction is no longer present, and the power mode changes to OFF then back to ACC or RUN.
* The history DTC will clear after 50 consecutive fault-free ignition cycles have occurred.
Reference Information
Schematic Reference
Heated/Cooled Seat Schematics ()
Connector End View Reference
Component Connector End Views (See: Diagrams/Connector Views)
Description and Operation
Heated Seats Description and Operation (KA1) ()Heated Seats Description and Operation (KA6) ()
Electrical Information Reference
* Circuit Testing (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic Procedures/Circuit
Testing/Circuit Testing)
* Connector Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic
Procedures/Connector Repairs/Connector Repairs)
* Testing for Intermittent Conditions and Poor Connections (See: Testing and Inspection/Component Tests and General Diagnostics/General
Electrical Diagnostic Procedures/Circuit Testing/Testing for Intermittent Conditions and Poor Connections)
* Wiring Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic Procedures/Wiring
Repairs/Wiring Repairs)
Scan Tool Reference
Control Module References (See: Testing and Inspection/Programming and Relearning) for scan tool information
Circuit/System Verification
Verify the type of vehicle and the heated seat system for which the DTC set.
If the DTC set in a vehicle equipped with memory, refer to Circuit/System Testing below.
If the DTC set in a hybrid vehicle without memory, refer to DTC B2425 or B2430 (HP2 w/o memory).
If the DTC set in a non-hybrid vehicle without memory, refer to DTC B2425 or B2430 (Dealer installed).
If the DTC set in the rear heated seat module, refer to DTC B2425 or B2430 (Rear seat).
Circuit/System Testing
B2425 0A, B2425 0B, B2425 0C, B2425 0D, B2425 0E, B2425 04, or B2425 1F
1. Ignition OFF, disconnect the X3 harness connector at the MSM.
2. Ignition ON, verify that a test lamp illuminates between the B+ circuit terminal 5 and ground.
锟斤拷If the test lamp does not illuminate, test the B+ circuit for a short to ground or an open/high resistance.
3. Ignition OFF, connect the X3 harness connector at the MSM and disconnect the X1 harness connector at the MSM.
Important: Element resistance must be measured twice to ensure that all failure conditions are simulated. First with the seat
unoccupied, then with the seat occupied.
2010 Cadillac Truck Escalade EXT AWD V8-6.2L Page 3143
2010 Cadillac Truck Escalade EXT AWD V8-6.2L Page 3143
3900 kg (8600 lb) GVW
* Control Module References (See: Testing and Inspection/Programming and Relearning) for module replacement, setup, and programming
U2174
DTC U2105-U2199
Diagnostic Instructions
* Perform the Diagnostic System Check - Vehicle (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic System
Check - Vehicle) prior to using this diagnostic procedure.
* Review Strategy Based Diagnosis (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Strategy Based Diagnosis) for an
overview of the diagnostic approach.
* Diagnostic Procedure Instructions (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic Procedure
Instructions) provides an overview of each diagnostic category.
DTC Descriptor
DTC U2142 00
- Lost Communication With Yaw Rate Sensor (YRS)
Circuit/System Description
Modules connected to the CAN bus serial data circuits monitor for serial data communications during normal vehicle operation. Operating
information and commands are exchanged among the modules. The modules have prerecorded information about what messages are needed to be
exchanged on the serial data circuits. The messages are supervised and also, some periodic messages are used by the receiver module as an
availability indication of the transmitter module. Each message contains the identification number of the transmitter module.
The electronic brake control module (EBCM) activates the other modules connected to the CAN serial data circuits by applying voltage when the
ignition key is in ACC, ON or START. The EBCM, Yaw Rate and Lateral Acceleration Sensor are the only modules connected to the CAN bus
serial data circuits. For more information on CAN bus serial data refer to Data Link Communications Description and Operation (See: Powertrain
Management/Computers and Control Systems/Information Bus/Description and Operation).
Conditions for Running the DTC
* The system voltage is between 9-16 volts.
* The vehicle power mode master requires serial data communication to occur.
Conditions for Setting the DTC
A supervised periodic message that includes the transmitter module availability has not been received.
Action Taken When the DTC Sets
* The vehicle stability enhancement system (VSES), if equipped, and traction control system (TCS) will not function.
* System OFF lamps will illuminate for these systems.
Conditions for Clearing the DTC
* A current DTC clears when the malfunction is no longer present.
* A history DTC clears when the module ignition cycle counter reaches the reset threshold of 50, without a repeat of the malfunction.
Diagnostic Aids
* Sometimes, while diagnosing a specific customer concern or after a repair, you may notice a history U-code present. However, there is no
associated "current" or "active" status. Loss-of- communication U-codes such as these can set for a variety of reasons. Many times, they are
transparent to the vehicle operator and technician, and/or have no associated symptoms. Eventually, they will erase themselves automatically
after a number of fault-free ignition cycles. This condition would most likely be attributed to one of these scenarios:
- A control module on the data communication circuit was disconnected while the communication circuit is awake.
- Power to one or more modules was interrupted during diagnosis.
- A low battery condition was present, so some control modules stop communicating when battery voltage drops below a certain threshold.
- Battery power was restored to the vehicle and control modules on the communication circuit did not all re-initialize at the same time.
- If a loss-of-communication U-code appears in history for no apparent reason, it is most likely associated with one of the scenarios above.
These are all temporary conditions and should never be interpreted as an intermittent fault, causing you to replace a part.
* A control module may have a U-code stored in history that does not require any repairs. Issues with late or corrupted messages between
control modules can be temporary with no apparent symptom or complaint; this does not mean the control module is faulty. Do not replace a
control module based only on a history U-code.
3900 kg (8600 lb) GVW
* Control Module References (See: Testing and Inspection/Programming and Relearning) for module replacement, setup, and programming
U2174
DTC U2105-U2199
Diagnostic Instructions
* Perform the Diagnostic System Check - Vehicle (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic System
Check - Vehicle) prior to using this diagnostic procedure.
* Review Strategy Based Diagnosis (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Strategy Based Diagnosis) for an
overview of the diagnostic approach.
* Diagnostic Procedure Instructions (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic Procedure
Instructions) provides an overview of each diagnostic category.
DTC Descriptor
DTC U2142 00
- Lost Communication With Yaw Rate Sensor (YRS)
Circuit/System Description
Modules connected to the CAN bus serial data circuits monitor for serial data communications during normal vehicle operation. Operating
information and commands are exchanged among the modules. The modules have prerecorded information about what messages are needed to be
exchanged on the serial data circuits. The messages are supervised and also, some periodic messages are used by the receiver module as an
availability indication of the transmitter module. Each message contains the identification number of the transmitter module.
The electronic brake control module (EBCM) activates the other modules connected to the CAN serial data circuits by applying voltage when the
ignition key is in ACC, ON or START. The EBCM, Yaw Rate and Lateral Acceleration Sensor are the only modules connected to the CAN bus
serial data circuits. For more information on CAN bus serial data refer to Data Link Communications Description and Operation (See: Powertrain
Management/Computers and Control Systems/Information Bus/Description and Operation).
Conditions for Running the DTC
* The system voltage is between 9-16 volts.
* The vehicle power mode master requires serial data communication to occur.
Conditions for Setting the DTC
A supervised periodic message that includes the transmitter module availability has not been received.
Action Taken When the DTC Sets
* The vehicle stability enhancement system (VSES), if equipped, and traction control system (TCS) will not function.
* System OFF lamps will illuminate for these systems.
Conditions for Clearing the DTC
* A current DTC clears when the malfunction is no longer present.
* A history DTC clears when the module ignition cycle counter reaches the reset threshold of 50, without a repeat of the malfunction.
Diagnostic Aids
* Sometimes, while diagnosing a specific customer concern or after a repair, you may notice a history U-code present. However, there is no
associated "current" or "active" status. Loss-of- communication U-codes such as these can set for a variety of reasons. Many times, they are
transparent to the vehicle operator and technician, and/or have no associated symptoms. Eventually, they will erase themselves automatically
after a number of fault-free ignition cycles. This condition would most likely be attributed to one of these scenarios:
- A control module on the data communication circuit was disconnected while the communication circuit is awake.
- Power to one or more modules was interrupted during diagnosis.
- A low battery condition was present, so some control modules stop communicating when battery voltage drops below a certain threshold.
- Battery power was restored to the vehicle and control modules on the communication circuit did not all re-initialize at the same time.
- If a loss-of-communication U-code appears in history for no apparent reason, it is most likely associated with one of the scenarios above.
These are all temporary conditions and should never be interpreted as an intermittent fault, causing you to replace a part.
* A control module may have a U-code stored in history that does not require any repairs. Issues with late or corrupted messages between
control modules can be temporary with no apparent symptom or complaint; this does not mean the control module is faulty. Do not replace a
control module based only on a history U-code.
2010 Cadillac Truck Escalade EXT AWD V8-6.2L Page 1780
2010 Cadillac Truck Escalade EXT AWD V8-6.2L Page 1780
* Fuel Pressure Sensor Replacement (See: Powertrain Management/Fuel Delivery and Air Induction/Fuel Pressure Sensor/Switch/Service and
Repair)
* Control Module References (See: Testing and Inspection/Programming and Relearning) for fuel pump control module replacement, setup,
and programming
P018D
DTC P018B-P018D
Diagnostic Instructions
* Perform the Diagnostic System Check - Vehicle (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic System
Check - Vehicle) prior to using this diagnostic procedure.
* Review Strategy Based Diagnosis (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Strategy Based Diagnosis) for an
overview of the diagnostic approach.
* Diagnostic Procedure Instructions (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic Procedure
Instructions) provides an overview of each diagnostic category.
DTC Descriptors
DTC P018B
- Fuel Pressure Sensor Performance
DTC P018C
- Fuel Pressure Sensor Circuit Low Voltage
DTC P018D
- Fuel Pressure Sensor Circuit High Voltage
Diagnostic Fault Information
Circuit/System Description
The fuel pressure sensor is located on the fuel line. The fuel pressure sensor monitors the fuel pressure in the fuel line. The fuel pump flow control
module monitors the voltage signal from the fuel pressure sensor.
Conditions for Running the DTC
* The engine is running.
* DTC P018C, P018D, P0231, P0232, P023F, P064A, P1255 or P06A6 are not active.
* DTC P0641 has not failed this ignition cycle.
* Fuel pump control is enabled and the fuel pump control state is normal.
* The engine has been running for at least 5 seconds.
Conditions for Setting the DTC
The fuel pump control module does not detect a change in the fuel rail pressure of at least 30 kPa (4.4 psi) when the fuel pump is operating. The
fuel rail pressure sensor performance diagnostic provides a means to detect fuel pressure sensor output that is stuck within the normal operating
range of the sensor.
Action Taken When the DTC Sets
DTC P018B, P018C and P018D are Type A DTCs.
Conditions for Clearing the DTC
DTC P018B, P018C and P018D are Type A DTCs.
Diagnostic Aids
Using the Failure Records data may help locate an intermittent condition. If you cannot duplicate the DTC, the information in the Failure Records
can help determine how many miles since the DTC set. The Fail Counter and Pass Counter can help determine how many ignition cycles that the
* Fuel Pressure Sensor Replacement (See: Powertrain Management/Fuel Delivery and Air Induction/Fuel Pressure Sensor/Switch/Service and
Repair)
* Control Module References (See: Testing and Inspection/Programming and Relearning) for fuel pump control module replacement, setup,
and programming
P018D
DTC P018B-P018D
Diagnostic Instructions
* Perform the Diagnostic System Check - Vehicle (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic System
Check - Vehicle) prior to using this diagnostic procedure.
* Review Strategy Based Diagnosis (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Strategy Based Diagnosis) for an
overview of the diagnostic approach.
* Diagnostic Procedure Instructions (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic Procedure
Instructions) provides an overview of each diagnostic category.
DTC Descriptors
DTC P018B
- Fuel Pressure Sensor Performance
DTC P018C
- Fuel Pressure Sensor Circuit Low Voltage
DTC P018D
- Fuel Pressure Sensor Circuit High Voltage
Diagnostic Fault Information
Circuit/System Description
The fuel pressure sensor is located on the fuel line. The fuel pressure sensor monitors the fuel pressure in the fuel line. The fuel pump flow control
module monitors the voltage signal from the fuel pressure sensor.
Conditions for Running the DTC
* The engine is running.
* DTC P018C, P018D, P0231, P0232, P023F, P064A, P1255 or P06A6 are not active.
* DTC P0641 has not failed this ignition cycle.
* Fuel pump control is enabled and the fuel pump control state is normal.
* The engine has been running for at least 5 seconds.
Conditions for Setting the DTC
The fuel pump control module does not detect a change in the fuel rail pressure of at least 30 kPa (4.4 psi) when the fuel pump is operating. The
fuel rail pressure sensor performance diagnostic provides a means to detect fuel pressure sensor output that is stuck within the normal operating
range of the sensor.
Action Taken When the DTC Sets
DTC P018B, P018C and P018D are Type A DTCs.
Conditions for Clearing the DTC
DTC P018B, P018C and P018D are Type A DTCs.
Diagnostic Aids
Using the Failure Records data may help locate an intermittent condition. If you cannot duplicate the DTC, the information in the Failure Records
can help determine how many miles since the DTC set. The Fail Counter and Pass Counter can help determine how many ignition cycles that the
2010 Cadillac Truck Escalade ESV AWD V8-6.2L Page 1755
2010 Cadillac Truck Escalade ESV AWD V8-6.2L Page 1755
* Observe the DTC information with a scan tool. Verify there are no B52 HO2S heater or fuel trim DTCs set.
锟斤拷If any DTCs are set, refer to Diagnostic Trouble Code (DTC) List - Vehicle (See: Diagnostic Trouble Code Descriptions/Diagnostic
Trouble Code (DTC) List - Vehicle).
* Engine idling at operating temperature, observe the appropriate B52 HO2S parameter with a scan tool. Verify the following:
- The B52 HO2S 1 value should vary from below 200 mV to above 800 mV and respond to fueling changes.
- The B52 HO2S 2 value should change greater than 200 mV when the throttle is quickly cycled 3 times from closed to wide open and
back to closed after running the engine at 1,500 RPM for 30 s.
* Operate the vehicle within the Conditions for Running the DTC to verify the DTC does not reset. You may also operate the vehicle within the
conditions that you observed from the Freeze Frame/Failure Records data.
Circuit/System Testing
1. Verify none of the following conditions exist:
* Lean or rich fuel injectors-Refer to Fuel Injector Diagnosis (CH47976) (See: Powertrain Management/Fuel Delivery and Air
Induction/Fuel Injector/Testing and Inspection)Fuel Injector Diagnosis (J39021 or Scan Tool) (See: Powertrain Management/Fuel
Delivery and Air Induction/Fuel Injector/Testing and Inspection)
* Water intrusion in the B52 HO2S harness connector
* Low or high fuel system pressure-Refer to Fuel System Diagnosis (w/o FPCM) (See: Powertrain Management/Computers and Control
Systems/Testing and Inspection/Component Tests and General Diagnostics)Fuel System Diagnosis (FPCM) (See: Powertrain
Management/Computers and Control Systems/Testing and Inspection/Component Tests and General Diagnostics)
* Fuel that is contaminated-Refer to Alcohol/Contaminants-in-Fuel Diagnosis (Without Special Tool) (See: Powertrain
Management/Computers and Control Systems/Testing and Inspection/Component Tests and General
Diagnostics/Alcohol/Contaminants-in-Fuel Diagnosis (Without Special Tool))Alcohol/Contaminants-in-Fuel Diagnosis (Special Tool) (
See: Powertrain Management/Fuel Delivery and Air Induction/Fuel/Testing and Inspection/Alcohol/Contaminants-in-Fuel Diagnosis
(Special Tool))
* Fuel saturation of the evaporative emission (EVAP) canister
* Exhaust leaks near the B52 HO2S
* Engine vacuum leaks
* Engine oil consumption-Refer to Oil Consumption Diagnosis (See: Engine, Cooling and Exhaust/Engine/Testing and
Inspection/Component Tests and General Diagnostics/Oil Consumption Diagnosis)
* Engine coolant consumption-Refer to Loss of Coolant (See: Engine, Cooling and Exhaust/Cooling System/Testing and
Inspection/Symptom Related Diagnostic Procedures/Loss of Coolant)
锟斤拷If you find any of the above conditions, repair as necessary.
2. If all conditions test normal, test or replace the appropriate B52 HO2S.
Repair Instructions
Caution: Refer to Heated Oxygen Sensor Resistance Learn Reset Caution (See: Powertrain Management/Computers and Control
Systems/Oxygen Sensor/Service Precautions/Heated Oxygen Sensor Resistance Learn Reset Caution).
Perform the Diagnostic Repair Verification (See: Verification Tests) after completing the diagnostic procedure.
* Heated Oxygen Sensor Replacement - Bank 1 Sensor 1 (1500 Series) (See: Powertrain Management/Computers and Control
Systems/Oxygen Sensor/Service and Repair)Heated Oxygen Sensor Replacement - Bank 1 Sensor 1 (2500 Series) (See: Powertrain
Management/Computers and Control Systems/Oxygen Sensor/Service and Repair)
* Heated Oxygen Sensor Replacement - Bank 1 Sensor 2 (1500 Series) (See: Powertrain Management/Computers and Control
Systems/Oxygen Sensor/Service and Repair)Heated Oxygen Sensor Replacement - Bank 1 Sensor 2 (2500 Series) (See: Powertrain
Management/Computers and Control Systems/Oxygen Sensor/Service and Repair)
* Heated Oxygen Sensor Replacement - Bank 2 Sensor 1 (1500 Series) (See: Powertrain Management/Computers and Control
Systems/Oxygen Sensor/Service and Repair)Heated Oxygen Sensor Replacement - Bank 2 Sensor 1 (2500 Series) (See: Powertrain
Management/Computers and Control Systems/Oxygen Sensor/Service and Repair)
* Heated Oxygen Sensor Replacement - Bank 2 Sensor 2 (1500 Series) (See: Powertrain Management/Computers and Control
Systems/Oxygen Sensor/Service and Repair)Heated Oxygen Sensor Replacement - Bank 2 Sensor 2 (2500 Series) (See: Powertrain
Management/Computers and Control Systems/Oxygen Sensor/Service and Repair)
* Control Module References (See: Testing and Inspection/Programming and Relearning) for ECM replacement, setup, and programming
P15F0
DTC P15F0
Diagnostic Instructions
* Observe the DTC information with a scan tool. Verify there are no B52 HO2S heater or fuel trim DTCs set.
锟斤拷If any DTCs are set, refer to Diagnostic Trouble Code (DTC) List - Vehicle (See: Diagnostic Trouble Code Descriptions/Diagnostic
Trouble Code (DTC) List - Vehicle).
* Engine idling at operating temperature, observe the appropriate B52 HO2S parameter with a scan tool. Verify the following:
- The B52 HO2S 1 value should vary from below 200 mV to above 800 mV and respond to fueling changes.
- The B52 HO2S 2 value should change greater than 200 mV when the throttle is quickly cycled 3 times from closed to wide open and
back to closed after running the engine at 1,500 RPM for 30 s.
* Operate the vehicle within the Conditions for Running the DTC to verify the DTC does not reset. You may also operate the vehicle within the
conditions that you observed from the Freeze Frame/Failure Records data.
Circuit/System Testing
1. Verify none of the following conditions exist:
* Lean or rich fuel injectors-Refer to Fuel Injector Diagnosis (CH47976) (See: Powertrain Management/Fuel Delivery and Air
Induction/Fuel Injector/Testing and Inspection)Fuel Injector Diagnosis (J39021 or Scan Tool) (See: Powertrain Management/Fuel
Delivery and Air Induction/Fuel Injector/Testing and Inspection)
* Water intrusion in the B52 HO2S harness connector
* Low or high fuel system pressure-Refer to Fuel System Diagnosis (w/o FPCM) (See: Powertrain Management/Computers and Control
Systems/Testing and Inspection/Component Tests and General Diagnostics)Fuel System Diagnosis (FPCM) (See: Powertrain
Management/Computers and Control Systems/Testing and Inspection/Component Tests and General Diagnostics)
* Fuel that is contaminated-Refer to Alcohol/Contaminants-in-Fuel Diagnosis (Without Special Tool) (See: Powertrain
Management/Computers and Control Systems/Testing and Inspection/Component Tests and General
Diagnostics/Alcohol/Contaminants-in-Fuel Diagnosis (Without Special Tool))Alcohol/Contaminants-in-Fuel Diagnosis (Special Tool) (
See: Powertrain Management/Fuel Delivery and Air Induction/Fuel/Testing and Inspection/Alcohol/Contaminants-in-Fuel Diagnosis
(Special Tool))
* Fuel saturation of the evaporative emission (EVAP) canister
* Exhaust leaks near the B52 HO2S
* Engine vacuum leaks
* Engine oil consumption-Refer to Oil Consumption Diagnosis (See: Engine, Cooling and Exhaust/Engine/Testing and
Inspection/Component Tests and General Diagnostics/Oil Consumption Diagnosis)
* Engine coolant consumption-Refer to Loss of Coolant (See: Engine, Cooling and Exhaust/Cooling System/Testing and
Inspection/Symptom Related Diagnostic Procedures/Loss of Coolant)
锟斤拷If you find any of the above conditions, repair as necessary.
2. If all conditions test normal, test or replace the appropriate B52 HO2S.
Repair Instructions
Caution: Refer to Heated Oxygen Sensor Resistance Learn Reset Caution (See: Powertrain Management/Computers and Control
Systems/Oxygen Sensor/Service Precautions/Heated Oxygen Sensor Resistance Learn Reset Caution).
Perform the Diagnostic Repair Verification (See: Verification Tests) after completing the diagnostic procedure.
* Heated Oxygen Sensor Replacement - Bank 1 Sensor 1 (1500 Series) (See: Powertrain Management/Computers and Control
Systems/Oxygen Sensor/Service and Repair)Heated Oxygen Sensor Replacement - Bank 1 Sensor 1 (2500 Series) (See: Powertrain
Management/Computers and Control Systems/Oxygen Sensor/Service and Repair)
* Heated Oxygen Sensor Replacement - Bank 1 Sensor 2 (1500 Series) (See: Powertrain Management/Computers and Control
Systems/Oxygen Sensor/Service and Repair)Heated Oxygen Sensor Replacement - Bank 1 Sensor 2 (2500 Series) (See: Powertrain
Management/Computers and Control Systems/Oxygen Sensor/Service and Repair)
* Heated Oxygen Sensor Replacement - Bank 2 Sensor 1 (1500 Series) (See: Powertrain Management/Computers and Control
Systems/Oxygen Sensor/Service and Repair)Heated Oxygen Sensor Replacement - Bank 2 Sensor 1 (2500 Series) (See: Powertrain
Management/Computers and Control Systems/Oxygen Sensor/Service and Repair)
* Heated Oxygen Sensor Replacement - Bank 2 Sensor 2 (1500 Series) (See: Powertrain Management/Computers and Control
Systems/Oxygen Sensor/Service and Repair)Heated Oxygen Sensor Replacement - Bank 2 Sensor 2 (2500 Series) (See: Powertrain
Management/Computers and Control Systems/Oxygen Sensor/Service and Repair)
* Control Module References (See: Testing and Inspection/Programming and Relearning) for ECM replacement, setup, and programming
P15F0
DTC P15F0
Diagnostic Instructions
2010 Cadillac Truck Escalade ESV AWD V8-6.2L Page 588
2010 Cadillac Truck Escalade ESV AWD V8-6.2L Page 588
Circuit/System Description
The driver and front passenger heated seats are controlled by the memory seat module (MSM). When active, power is applied to the seat cushion
and seat back heater elements through a common voltage supply circuit. The module controls the seat temperature by providing a pulse width
modulated (PWM) ground through the heated seat element control circuits to the seat heater elements. The module then monitors the current flow
through the heating elements and the of rate change of the temperature sensors to verify correct heated seat operation.
Conditions for Running the DTC
The MSM must be powered.
Conditions for Setting the DTC
B2425 04 or B2430 04
The module does not detect a temperature change within 210 seconds.
Circuit/System Description
The driver and front passenger heated seats are controlled by the memory seat module (MSM). When active, power is applied to the seat cushion
and seat back heater elements through a common voltage supply circuit. The module controls the seat temperature by providing a pulse width
modulated (PWM) ground through the heated seat element control circuits to the seat heater elements. The module then monitors the current flow
through the heating elements and the of rate change of the temperature sensors to verify correct heated seat operation.
Conditions for Running the DTC
The MSM must be powered.
Conditions for Setting the DTC
B2425 04 or B2430 04
The module does not detect a temperature change within 210 seconds.
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2010 Cadillac Truck Escalade EXT AWD V8-6.2L Page 1779
Using the Failure Records data may help locate an intermittent condition. If you cannot duplicate the DTC, the information in the Failure Records
can help determine how many miles since the DTC set. The Fail Counter and Pass Counter can help determine how many ignition cycles that the
diagnostic test reported a pass and/or a fail.
Reference Information
Schematic Reference
Engine Controls Schematics (See: Diagrams/Electrical Diagrams/Powertrain Management/System Diagram)
Connector End View Reference
Component Connector End Views (See: Diagrams/Connector Views)
Description and Operation
Fuel System Description (See: Powertrain Management/Computers and Control Systems/Description and Operation/Fuel System Description)
Electrical Information Reference
* Circuit Testing (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic Procedures/Circuit
Testing/Circuit Testing)
* Testing for Intermittent Conditions and Poor Connections (See: Testing and Inspection/Component Tests and General Diagnostics/General
Electrical Diagnostic Procedures/Circuit Testing/Testing for Intermittent Conditions and Poor Connections)
* Connector Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic
Procedures/Connector Repairs/Connector Repairs)
* Wiring Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic Procedures/Wiring
Repairs/Wiring Repairs)
DTC Type Reference
Powertrain Diagnostic Trouble Code (DTC) Type Definitions (See: Diagnostic Trouble Code Descriptions/Powertrain Diagnostic Trouble Code
(DTC) Type Definitions)
Scan Tool Reference
Control Module References (See: Testing and Inspection/Programming and Relearning) for scan tool information
Circuit/System Testing
Note: Verify that the fuel tank is not empty. Only perform this diagnostic if there is at least 2 gallons of fuel in the fuel tank. Clear the DTC, and
start and run the engine. Verify that the DTC P0118B resets before proceeding with the circuit system testing. If the DTC does not reset, refer to
diagnostic aids.
1. Ignition OFF, disconnect the harness connector at the B47 fuel pressure sensor.
2. Ignition OFF, test for less than 1 ohm between the low reference circuit terminal 2 and ground.
瀚慖f greater than the specified range, test the low reference circuit for an open/high resistance. If the circuit tests normal, replace the K27
fuel pump flow control module.
3. Ignition ON, test for 4.8-5.2 V between the B47 fuel pressure sensor 5 V reference circuit terminal 3 and ground.
瀚慖f less than the specified range, test the 5 V reference circuit for a short to ground or an open/high resistance. If the circuit tests normal,
replace the K27 fuel pump flow control module.
瀚慖f greater than the specified range, test the 5 V reference circuit for a short to voltage. If the circuit tests normal, replace the K27 fuel
pump flow control module.
4. Verify the scan tool 5 V reference is less than 1 V.
瀚慖f greater than the specified range, test the signal circuit terminal 1 for a short to voltage. If the circuit tests normal, replace the K27 fuel
pump flow control module.
5. Install a 3 A fused jumper wire between the signal circuit terminal 1 and the 5 V reference circuit terminal 3. Verify the scan tool 5 V
reference is greater than 4.8 V.
瀚慖f less than the specified range, test the signal circuit for a short to ground or an open/high resistance. If the circuit tests normal, replace
the K27 fuel pump flow control module.
6. If all circuits test normal, replace the B47 fuel pressure sensor.
Repair Instructions
Perform the Diagnostic Repair Verification (See: Verification Tests) after completing the diagnostic procedure.
Using the Failure Records data may help locate an intermittent condition. If you cannot duplicate the DTC, the information in the Failure Records
can help determine how many miles since the DTC set. The Fail Counter and Pass Counter can help determine how many ignition cycles that the
diagnostic test reported a pass and/or a fail.
Reference Information
Schematic Reference
Engine Controls Schematics (See: Diagrams/Electrical Diagrams/Powertrain Management/System Diagram)
Connector End View Reference
Component Connector End Views (See: Diagrams/Connector Views)
Description and Operation
Fuel System Description (See: Powertrain Management/Computers and Control Systems/Description and Operation/Fuel System Description)
Electrical Information Reference
* Circuit Testing (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic Procedures/Circuit
Testing/Circuit Testing)
* Testing for Intermittent Conditions and Poor Connections (See: Testing and Inspection/Component Tests and General Diagnostics/General
Electrical Diagnostic Procedures/Circuit Testing/Testing for Intermittent Conditions and Poor Connections)
* Connector Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic
Procedures/Connector Repairs/Connector Repairs)
* Wiring Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic Procedures/Wiring
Repairs/Wiring Repairs)
DTC Type Reference
Powertrain Diagnostic Trouble Code (DTC) Type Definitions (See: Diagnostic Trouble Code Descriptions/Powertrain Diagnostic Trouble Code
(DTC) Type Definitions)
Scan Tool Reference
Control Module References (See: Testing and Inspection/Programming and Relearning) for scan tool information
Circuit/System Testing
Note: Verify that the fuel tank is not empty. Only perform this diagnostic if there is at least 2 gallons of fuel in the fuel tank. Clear the DTC, and
start and run the engine. Verify that the DTC P0118B resets before proceeding with the circuit system testing. If the DTC does not reset, refer to
diagnostic aids.
1. Ignition OFF, disconnect the harness connector at the B47 fuel pressure sensor.
2. Ignition OFF, test for less than 1 ohm between the low reference circuit terminal 2 and ground.
瀚慖f greater than the specified range, test the low reference circuit for an open/high resistance. If the circuit tests normal, replace the K27
fuel pump flow control module.
3. Ignition ON, test for 4.8-5.2 V between the B47 fuel pressure sensor 5 V reference circuit terminal 3 and ground.
瀚慖f less than the specified range, test the 5 V reference circuit for a short to ground or an open/high resistance. If the circuit tests normal,
replace the K27 fuel pump flow control module.
瀚慖f greater than the specified range, test the 5 V reference circuit for a short to voltage. If the circuit tests normal, replace the K27 fuel
pump flow control module.
4. Verify the scan tool 5 V reference is less than 1 V.
瀚慖f greater than the specified range, test the signal circuit terminal 1 for a short to voltage. If the circuit tests normal, replace the K27 fuel
pump flow control module.
5. Install a 3 A fused jumper wire between the signal circuit terminal 1 and the 5 V reference circuit terminal 3. Verify the scan tool 5 V
reference is greater than 4.8 V.
瀚慖f less than the specified range, test the signal circuit for a short to ground or an open/high resistance. If the circuit tests normal, replace
the K27 fuel pump flow control module.
6. If all circuits test normal, replace the B47 fuel pressure sensor.
Repair Instructions
Perform the Diagnostic Repair Verification (See: Verification Tests) after completing the diagnostic procedure.
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not set.
* The ignition 1 voltage is between 10-32 V.
* The learned heater resistance is valid.
* The fuel level is greater than 10 %.
* The engine run time is equal to or greater than 5 minutes.
* The DTCs run once per ignition cycle when the above conditions are met.
Conditions for Setting the DTC
P0133 or P0153
* The ECM detects that the HO2S 1 rich-to-lean or lean-to-rich average response time is greater than a calibrated value.
* The DTCs set within 100 s when the above condition is met.
P013A or P013C
The ECM detects that the accumulated mass air flow monitored during rich-to-lean transitions between 450-150 mV is greater than 75 grams.
P013B or P013D
The ECM detects that the accumulated mass air flow monitored during lean-to-rich transitions between 350-650 mV is greater than 75 grams.
P013E or P014A
The ECM detects that the O2 sensor voltage has not decreased below 450 mV within 42 grams of accumulated air flow.
P013F or P014B
The ECM detects that the O2 sensor voltage has not increased above 350 mV within 200 grams of accumulated air flow.
P1133 or P1153
* The ECM detects that the HO2S 1 rich-to-lean counts, or the lean-to-rich counts are less than a calibrated value.
* The DTCs set within 100 s when the above condition is met.
Action Taken When the DTC Sets
DTCs P0133, P013A, P013B, P013C, P013D, P013E, P013F, P014A, P014B, P0153, P1133, and P1153 are Type B DTCs.
Conditions for Clearing the DTC
DTCs P0133, P013A, P013B, P013C, P013D, P013E, P013F, P014A, P014B, P0153, P1133, and P1153 are Type B DTCs.
Reference Information
Schematic Reference
Engine Controls Schematics (See: Diagrams/Electrical Diagrams/Powertrain Management/System Diagram)
Connector End View Reference
Component Connector End Views (See: Diagrams/Connector Views)
Electrical Information Reference
* Circuit Testing (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic Procedures/Circuit
Testing/Circuit Testing)
* Connector Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic
Procedures/Connector Repairs/Connector Repairs)
* Testing for Intermittent Conditions and Poor Connections (See: Testing and Inspection/Component Tests and General Diagnostics/General
Electrical Diagnostic Procedures/Circuit Testing/Testing for Intermittent Conditions and Poor Connections)
* Wiring Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic Procedures/Wiring
Repairs/Wiring Repairs)
* Heated Oxygen Sensor Wiring Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical
Diagnostic Procedures/Wiring Repairs/Heated Oxygen Sensor Wiring Repairs)
DTC Type Reference
Powertrain Diagnostic Trouble Code (DTC) Type Definitions (See: Diagnostic Trouble Code Descriptions/Powertrain Diagnostic Trouble Code
(DTC) Type Definitions)
Scan Tool Reference
Control Module References (See: Testing and Inspection/Programming and Relearning) for scan tool information
Circuit/System Verification
not set.
* The ignition 1 voltage is between 10-32 V.
* The learned heater resistance is valid.
* The fuel level is greater than 10 %.
* The engine run time is equal to or greater than 5 minutes.
* The DTCs run once per ignition cycle when the above conditions are met.
Conditions for Setting the DTC
P0133 or P0153
* The ECM detects that the HO2S 1 rich-to-lean or lean-to-rich average response time is greater than a calibrated value.
* The DTCs set within 100 s when the above condition is met.
P013A or P013C
The ECM detects that the accumulated mass air flow monitored during rich-to-lean transitions between 450-150 mV is greater than 75 grams.
P013B or P013D
The ECM detects that the accumulated mass air flow monitored during lean-to-rich transitions between 350-650 mV is greater than 75 grams.
P013E or P014A
The ECM detects that the O2 sensor voltage has not decreased below 450 mV within 42 grams of accumulated air flow.
P013F or P014B
The ECM detects that the O2 sensor voltage has not increased above 350 mV within 200 grams of accumulated air flow.
P1133 or P1153
* The ECM detects that the HO2S 1 rich-to-lean counts, or the lean-to-rich counts are less than a calibrated value.
* The DTCs set within 100 s when the above condition is met.
Action Taken When the DTC Sets
DTCs P0133, P013A, P013B, P013C, P013D, P013E, P013F, P014A, P014B, P0153, P1133, and P1153 are Type B DTCs.
Conditions for Clearing the DTC
DTCs P0133, P013A, P013B, P013C, P013D, P013E, P013F, P014A, P014B, P0153, P1133, and P1153 are Type B DTCs.
Reference Information
Schematic Reference
Engine Controls Schematics (See: Diagrams/Electrical Diagrams/Powertrain Management/System Diagram)
Connector End View Reference
Component Connector End Views (See: Diagrams/Connector Views)
Electrical Information Reference
* Circuit Testing (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic Procedures/Circuit
Testing/Circuit Testing)
* Connector Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic
Procedures/Connector Repairs/Connector Repairs)
* Testing for Intermittent Conditions and Poor Connections (See: Testing and Inspection/Component Tests and General Diagnostics/General
Electrical Diagnostic Procedures/Circuit Testing/Testing for Intermittent Conditions and Poor Connections)
* Wiring Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic Procedures/Wiring
Repairs/Wiring Repairs)
* Heated Oxygen Sensor Wiring Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical
Diagnostic Procedures/Wiring Repairs/Heated Oxygen Sensor Wiring Repairs)
DTC Type Reference
Powertrain Diagnostic Trouble Code (DTC) Type Definitions (See: Diagnostic Trouble Code Descriptions/Powertrain Diagnostic Trouble Code
(DTC) Type Definitions)
Scan Tool Reference
Control Module References (See: Testing and Inspection/Programming and Relearning) for scan tool information
Circuit/System Verification
2010 Cadillac Truck Escalade ESV AWD V8-6.2L Page 587
2010 Cadillac Truck Escalade ESV AWD V8-6.2L Page 587
DTC B2425 or B2430 (w/o HP2 with Memory)
Diagnostic Instructions
* Perform the Diagnostic System Check - Vehicle (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic System
Check - Vehicle) prior to using this diagnostic procedure.
* Review Strategy Based Diagnosis (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Strategy Based Diagnosis) for an
overview of the diagnostic approach.
* Diagnostic Procedure Instructions (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic Procedure
Instructions) provides an overview of each diagnostic category.
DTC Descriptors
DTC B2425 04
- Left Seat Heater Cushion Circuit Open
DTC B2425 0A
- Left Seat Heater Cushion Circuit Rate of Change Below Threshold
DTC B2425 0B
- Left Seat Heater Cushion Circuit Current Above Threshold
DTC B2425 0C
- Left Seat Heater Cushion Circuit Current Below Threshold
DTC B2425 0D
- Left Seat Heater Cushion Circuit Resistance Above Threshold
DTC B2425 0E
- Left Seat Heater Cushion Circuit Resistance Below Threshold
DTC B2425 1F
- Left Seat Heater Cushion Circuit Intermittent
DTC B2430 04
- Right Seat Heater Cushion Circuit Open
DTC B2430 0A
- Right Seat Heater Cushion Circuit Rate of Change Below Threshold
DTC B2430 0B
- Right Seat Heater Cushion Circuit Current Above Threshold
DTC B2430 0C
- Right Seat Heater Cushion Circuit Current Below Threshold
DTC B2430 0D
- Right Seat Heater Cushion Circuit Resistance Above Threshold
DTC B2430 0E
- Right Seat Heater Cushion Circuit Resistance Below Threshold
DTC B2430 1F
- Right Seat Heater Cushion Circuit Intermittent
Diagnostic Fault Information
DTC B2425 or B2430 (w/o HP2 with Memory)
Diagnostic Instructions
* Perform the Diagnostic System Check - Vehicle (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic System
Check - Vehicle) prior to using this diagnostic procedure.
* Review Strategy Based Diagnosis (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Strategy Based Diagnosis) for an
overview of the diagnostic approach.
* Diagnostic Procedure Instructions (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic Procedure
Instructions) provides an overview of each diagnostic category.
DTC Descriptors
DTC B2425 04
- Left Seat Heater Cushion Circuit Open
DTC B2425 0A
- Left Seat Heater Cushion Circuit Rate of Change Below Threshold
DTC B2425 0B
- Left Seat Heater Cushion Circuit Current Above Threshold
DTC B2425 0C
- Left Seat Heater Cushion Circuit Current Below Threshold
DTC B2425 0D
- Left Seat Heater Cushion Circuit Resistance Above Threshold
DTC B2425 0E
- Left Seat Heater Cushion Circuit Resistance Below Threshold
DTC B2425 1F
- Left Seat Heater Cushion Circuit Intermittent
DTC B2430 04
- Right Seat Heater Cushion Circuit Open
DTC B2430 0A
- Right Seat Heater Cushion Circuit Rate of Change Below Threshold
DTC B2430 0B
- Right Seat Heater Cushion Circuit Current Above Threshold
DTC B2430 0C
- Right Seat Heater Cushion Circuit Current Below Threshold
DTC B2430 0D
- Right Seat Heater Cushion Circuit Resistance Above Threshold
DTC B2430 0E
- Right Seat Heater Cushion Circuit Resistance Below Threshold
DTC B2430 1F
- Right Seat Heater Cushion Circuit Intermittent
Diagnostic Fault Information
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2010 Cadillac Truck Escalade EXT AWD V8-6.2L Page 1778
Perform the Diagnostic Repair Verification (See: Verification Tests) after completing the diagnostic procedure.
* Fuel Pressure Sensor Replacement (See: Powertrain Management/Fuel Delivery and Air Induction/Fuel Pressure Sensor/Switch/Service and
Repair)
* Control Module References (See: Testing and Inspection/Programming and Relearning) for fuel pump control module replacement, setup,
and programming
P018C
DTC P018B-P018D
Diagnostic Instructions
* Perform the Diagnostic System Check - Vehicle (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic System
Check - Vehicle) prior to using this diagnostic procedure.
* Review Strategy Based Diagnosis (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Strategy Based Diagnosis) for an
overview of the diagnostic approach.
* Diagnostic Procedure Instructions (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic Procedure
Instructions) provides an overview of each diagnostic category.
DTC Descriptors
DTC P018B
- Fuel Pressure Sensor Performance
DTC P018C
- Fuel Pressure Sensor Circuit Low Voltage
DTC P018D
- Fuel Pressure Sensor Circuit High Voltage
Diagnostic Fault Information
Circuit/System Description
The fuel pressure sensor is located on the fuel line. The fuel pressure sensor monitors the fuel pressure in the fuel line. The fuel pump flow control
module monitors the voltage signal from the fuel pressure sensor.
Conditions for Running the DTC
* The engine is running.
* DTC P018C, P018D, P0231, P0232, P023F, P064A, P1255 or P06A6 are not active.
* DTC P0641 has not failed this ignition cycle.
* Fuel pump control is enabled and the fuel pump control state is normal.
* The engine has been running for at least 5 seconds.
Conditions for Setting the DTC
The fuel pump control module does not detect a change in the fuel rail pressure of at least 30 kPa (4.4 psi) when the fuel pump is operating. The
fuel rail pressure sensor performance diagnostic provides a means to detect fuel pressure sensor output that is stuck within the normal operating
range of the sensor.
Action Taken When the DTC Sets
DTC P018B, P018C and P018D are Type A DTCs.
Conditions for Clearing the DTC
DTC P018B, P018C and P018D are Type A DTCs.
Perform the Diagnostic Repair Verification (See: Verification Tests) after completing the diagnostic procedure.
* Fuel Pressure Sensor Replacement (See: Powertrain Management/Fuel Delivery and Air Induction/Fuel Pressure Sensor/Switch/Service and
Repair)
* Control Module References (See: Testing and Inspection/Programming and Relearning) for fuel pump control module replacement, setup,
and programming
P018C
DTC P018B-P018D
Diagnostic Instructions
* Perform the Diagnostic System Check - Vehicle (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic System
Check - Vehicle) prior to using this diagnostic procedure.
* Review Strategy Based Diagnosis (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Strategy Based Diagnosis) for an
overview of the diagnostic approach.
* Diagnostic Procedure Instructions (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic Procedure
Instructions) provides an overview of each diagnostic category.
DTC Descriptors
DTC P018B
- Fuel Pressure Sensor Performance
DTC P018C
- Fuel Pressure Sensor Circuit Low Voltage
DTC P018D
- Fuel Pressure Sensor Circuit High Voltage
Diagnostic Fault Information
Circuit/System Description
The fuel pressure sensor is located on the fuel line. The fuel pressure sensor monitors the fuel pressure in the fuel line. The fuel pump flow control
module monitors the voltage signal from the fuel pressure sensor.
Conditions for Running the DTC
* The engine is running.
* DTC P018C, P018D, P0231, P0232, P023F, P064A, P1255 or P06A6 are not active.
* DTC P0641 has not failed this ignition cycle.
* Fuel pump control is enabled and the fuel pump control state is normal.
* The engine has been running for at least 5 seconds.
Conditions for Setting the DTC
The fuel pump control module does not detect a change in the fuel rail pressure of at least 30 kPa (4.4 psi) when the fuel pump is operating. The
fuel rail pressure sensor performance diagnostic provides a means to detect fuel pressure sensor output that is stuck within the normal operating
range of the sensor.
Action Taken When the DTC Sets
DTC P018B, P018C and P018D are Type A DTCs.
Conditions for Clearing the DTC
DTC P018B, P018C and P018D are Type A DTCs.
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Circuit/System Description
The heated oxygen sensors (HO2S) are used for fuel control and catalyst monitoring. Each HO2S compares the oxygen content of the surrounding
air with the oxygen content of the exhaust stream. When the engine is started, the control module operates in an Open Loop mode, ignoring the
HO2S signal voltage while calculating the air-to-fuel ratio. While the engine runs, the HO2S heats up and begins to generate a voltage within a
range of 0-1,275 mV. Once sufficient HO2S voltage fluctuation is observed by the control module, Closed Loop is entered. The control module
uses the HO2S voltage to determine the air-to-fuel ratio. An HO2S voltage that increases toward 1,000 mV indicates a rich fuel mixture. An HO2S
voltage that decreases toward 0 mV indicates a lean fuel mixture.
The heating elements inside each HO2S heat the sensor to bring the sensor up to operating conditions faster. This allows the system to enter Closed
Loop earlier and the control module to calculate the air-to-fuel ratio sooner.
Conditions for Running the DTC
P0133, P0153, P1133, or P1153
* DTCs P0068, P0101, P0102, P0103, P0106, P0107, P0108, P0112, P0113, P0116, P0117, P0118, P0120, P0121, P0122, P0123, P0128,
P0201, P0202, P0203, P0204, P0205, P0206, P0207, P0208, P0220, P0222, P0223, P0442, P0443, P0446, P0449, P0455, P0496, P1516,
P2101, P2119, P2135, P2176 are not set.
* The engine coolant temperature (ECT) is greater than 60锟斤拷C (140锟斤拷F).
* The intake air temperature (IAT) is warmer than -40锟斤拷C (-40锟斤拷F)
* The ignition 1 voltage is between 10-32 V.
* The fuel level is greater than 10 %.
* The engine run time is greater than 160 s.
* The engine speed is between 1,200-3,000 RPM.
* The barometric (BARO) pressure is greater than 70 kPa.
* The mass airflow (MAF) is between 20-55 g/s.
* The fuel system is in Closed Loop.
* The throttle position (TP) is greater than 5 %.
* The DTCs run once per drive cycle when the above conditions are met.
P013A P013C, P013E, or P014A
* Before the ECM can report DTC P013A, or P013C failed, DTCs P013E, P014A, P2270, and P2272 must run and pass.
* Before the ECM can report DTC P013E, or P014A failed, DTCs P2270 and P2272 must run and pass.
* DTCs P0030, P0036, P0053, P0054, P0101, P0102, P0103, P0106, P0107, P0108, P0120, P0121, P0122, P0123, P0131, P0132, P0133,
P0134, P0135, P0137, P0138, P013A, P013B, P013E, P013F, P0140, P0141, P0171, P0172, P0201, P0202, P0203, P0204, P0220, P0222,
P0223, P0300, P0442, P0443, P0446, P0449, P0455, P0496, P1133, P1174, P1516, P2101, P2119, P2135, P2176, P2270, P2271, P2A00 are
not set.
* The ignition 1 voltage is between 10-32 V.
* The learned heater resistance is valid.
* The fuel level is greater than 10 %.
* The engine run time is equal to or greater than 5 minutes.
* The accelerator pedal (APP) is steady.
* The torque converter clutch (TCC) is applied.
* The DTCs run once per ignition cycle, during decel fuel cut-off (DFCO), when the above conditions are met.
P013B P013D, P013F, or P014B
* Before the ECM can report DTC P013B, or P013D failed, DTCs P013A, P013C, P013E, P013F, P014A, P014B, P2270, P2271, P2272, and
P2273 must run and pass.
* Before the ECM can report DTC P013F, or P014B failed, DTCs P013A, P013C, P013E, P014A, P2270, P2271, P2272, and P2273 must run
and pass.
* DTCs P0030, P0036, P0053, P0054, P0101, P0102, P0103, P0106, P0107, P0108, P0120, P0121, P0122, P0123, P0131, P0132, P0133,
P0134, P0135, P0137, P0138, P013A, P013B, P013E, P013F, P0140, P0141, P0171, P0172, P0201, P0202, P0203, P0204, P0220, P0222,
P0223, P0300, P0442, P0443, P0446, P0449, P0455, P0496, P1133, P1174, P1516, P2101, P2119, P2135, P2176, P2270, P2271, P2A00 are
Circuit/System Description
The heated oxygen sensors (HO2S) are used for fuel control and catalyst monitoring. Each HO2S compares the oxygen content of the surrounding
air with the oxygen content of the exhaust stream. When the engine is started, the control module operates in an Open Loop mode, ignoring the
HO2S signal voltage while calculating the air-to-fuel ratio. While the engine runs, the HO2S heats up and begins to generate a voltage within a
range of 0-1,275 mV. Once sufficient HO2S voltage fluctuation is observed by the control module, Closed Loop is entered. The control module
uses the HO2S voltage to determine the air-to-fuel ratio. An HO2S voltage that increases toward 1,000 mV indicates a rich fuel mixture. An HO2S
voltage that decreases toward 0 mV indicates a lean fuel mixture.
The heating elements inside each HO2S heat the sensor to bring the sensor up to operating conditions faster. This allows the system to enter Closed
Loop earlier and the control module to calculate the air-to-fuel ratio sooner.
Conditions for Running the DTC
P0133, P0153, P1133, or P1153
* DTCs P0068, P0101, P0102, P0103, P0106, P0107, P0108, P0112, P0113, P0116, P0117, P0118, P0120, P0121, P0122, P0123, P0128,
P0201, P0202, P0203, P0204, P0205, P0206, P0207, P0208, P0220, P0222, P0223, P0442, P0443, P0446, P0449, P0455, P0496, P1516,
P2101, P2119, P2135, P2176 are not set.
* The engine coolant temperature (ECT) is greater than 60锟斤拷C (140锟斤拷F).
* The intake air temperature (IAT) is warmer than -40锟斤拷C (-40锟斤拷F)
* The ignition 1 voltage is between 10-32 V.
* The fuel level is greater than 10 %.
* The engine run time is greater than 160 s.
* The engine speed is between 1,200-3,000 RPM.
* The barometric (BARO) pressure is greater than 70 kPa.
* The mass airflow (MAF) is between 20-55 g/s.
* The fuel system is in Closed Loop.
* The throttle position (TP) is greater than 5 %.
* The DTCs run once per drive cycle when the above conditions are met.
P013A P013C, P013E, or P014A
* Before the ECM can report DTC P013A, or P013C failed, DTCs P013E, P014A, P2270, and P2272 must run and pass.
* Before the ECM can report DTC P013E, or P014A failed, DTCs P2270 and P2272 must run and pass.
* DTCs P0030, P0036, P0053, P0054, P0101, P0102, P0103, P0106, P0107, P0108, P0120, P0121, P0122, P0123, P0131, P0132, P0133,
P0134, P0135, P0137, P0138, P013A, P013B, P013E, P013F, P0140, P0141, P0171, P0172, P0201, P0202, P0203, P0204, P0220, P0222,
P0223, P0300, P0442, P0443, P0446, P0449, P0455, P0496, P1133, P1174, P1516, P2101, P2119, P2135, P2176, P2270, P2271, P2A00 are
not set.
* The ignition 1 voltage is between 10-32 V.
* The learned heater resistance is valid.
* The fuel level is greater than 10 %.
* The engine run time is equal to or greater than 5 minutes.
* The accelerator pedal (APP) is steady.
* The torque converter clutch (TCC) is applied.
* The DTCs run once per ignition cycle, during decel fuel cut-off (DFCO), when the above conditions are met.
P013B P013D, P013F, or P014B
* Before the ECM can report DTC P013B, or P013D failed, DTCs P013A, P013C, P013E, P013F, P014A, P014B, P2270, P2271, P2272, and
P2273 must run and pass.
* Before the ECM can report DTC P013F, or P014B failed, DTCs P013A, P013C, P013E, P014A, P2270, P2271, P2272, and P2273 must run
and pass.
* DTCs P0030, P0036, P0053, P0054, P0101, P0102, P0103, P0106, P0107, P0108, P0120, P0121, P0122, P0123, P0131, P0132, P0133,
P0134, P0135, P0137, P0138, P013A, P013B, P013E, P013F, P0140, P0141, P0171, P0172, P0201, P0202, P0203, P0204, P0220, P0222,
P0223, P0300, P0442, P0443, P0446, P0449, P0455, P0496, P1133, P1174, P1516, P2101, P2119, P2135, P2176, P2270, P2271, P2A00 are
2010 Cadillac Truck Escalade ESV AWD V8-6.2L Page 586
2010 Cadillac Truck Escalade ESV AWD V8-6.2L Page 586
3. Ignition ON, test for 4.8-5.2 volts between the 5-volt reference circuit terminal 6 and ground.
锟斤拷If less than the specified range, test the 5-volt reference circuit for a short to ground or an open/high resistance. If the circuit tests normal,
replace the MSM.
锟斤拷If greater than the specified range, test the 5-volt reference circuit for a short to voltage. If the circuit tests normal, replace the MSM.
4. Verify the appropriate scan tool driver seat sensor parameter is less than 1 volt.
锟斤拷If greater than the specified range, test the appropriate signal circuit listed below for a short to voltage. If the circuit tests normal, replace
the MSM.
* Seat front vertical position sensor terminal 1
* Seat rear vertical position sensor terminal 5
* Seat horizontal position sensor terminal 3
5. Install a 3A fused jumper wire between the appropriate signal circuit listed below and the 5-volt reference circuit terminal 6. Verify the
appropriate scan tool driver seat position sensor parameter is greater than 4.75 volts.
* Seat horizontal position sensor terminal 3
* Seat front vertical position sensor terminal 1
* Seat rear vertical position sensor terminal 5
锟斤拷If less than the specified range, test the signal circuit for short to ground or an open/high resistance. If the circuit tests normal, replace the
MSM.
6. If all circuits test normal, test or replace the seat position sensor.
B1850 01, B1850 06, B1860 01 or B1860 06
1. Ignition OFF, disconnect the X2 harness connector at the lumbar adjuster assembly.
2. Test for less than 2 ohms between the low reference circuit terminal C and ground.
锟斤拷If greater than the specified value, test the low reference circuit for an open/high resistance. If the circuit tests normal, replace the MSM.
3. Ignition ON, test for 4.8-5.2 volts between the 5-volt reference circuit terminal A and ground.
锟斤拷If less than the specified range, test the 5-volt reference circuit for a short to ground or an open/high resistance. If the circuit tests normal,
replace the MSM.
锟斤拷If greater than the specified range, test the 5-volt reference circuit for a short to voltage. If the circuit tests normal, replace the MSM.
4. Verify the appropriate scan tool lumbar sensor parameter is less than 1 volt.
锟斤拷If greater than the specified range, test the appropriate signal circuit listed below for a short to voltage. If the circuit tests normal, replace
the MSM.
* Lumbar vertical position sensor terminal B
* Lumbar horizontal position sensor terminal D
5. Install a 3A fused jumper wire between the appropriate signal circuit listed below and the 5-volt reference circuit terminal A. Verify the
appropriate scan tool lumbar sensor parameter is greater than 4.75 volts.
* Lumbar vertical position sensor terminal B
* Lumbar horizontal position sensor terminal D
锟斤拷If less than the specified range, test the signal circuit for short to ground or an open/high resistance. If the circuit tests normal, replace the
MSM.
6. If all circuits test normal, test or replace the lumbar position sensor.
Repair Instructions
Perform the Diagnostic Repair Verification (See: Verification Tests) after completing the diagnostic procedure.
* Front Seat Adjuster Replacement (with HP2) ()Front Seat Adjuster Replacement (without HP2) ()
* Seat Lumbar Sub System Replacement ()
* Front Seat Recliner Actuator Motor Replacement ()
* Control Module References (See: Testing and Inspection/Programming and Relearning) for MSM replacement, setup, and programming
3. Ignition ON, test for 4.8-5.2 volts between the 5-volt reference circuit terminal 6 and ground.
锟斤拷If less than the specified range, test the 5-volt reference circuit for a short to ground or an open/high resistance. If the circuit tests normal,
replace the MSM.
锟斤拷If greater than the specified range, test the 5-volt reference circuit for a short to voltage. If the circuit tests normal, replace the MSM.
4. Verify the appropriate scan tool driver seat sensor parameter is less than 1 volt.
锟斤拷If greater than the specified range, test the appropriate signal circuit listed below for a short to voltage. If the circuit tests normal, replace
the MSM.
* Seat front vertical position sensor terminal 1
* Seat rear vertical position sensor terminal 5
* Seat horizontal position sensor terminal 3
5. Install a 3A fused jumper wire between the appropriate signal circuit listed below and the 5-volt reference circuit terminal 6. Verify the
appropriate scan tool driver seat position sensor parameter is greater than 4.75 volts.
* Seat horizontal position sensor terminal 3
* Seat front vertical position sensor terminal 1
* Seat rear vertical position sensor terminal 5
锟斤拷If less than the specified range, test the signal circuit for short to ground or an open/high resistance. If the circuit tests normal, replace the
MSM.
6. If all circuits test normal, test or replace the seat position sensor.
B1850 01, B1850 06, B1860 01 or B1860 06
1. Ignition OFF, disconnect the X2 harness connector at the lumbar adjuster assembly.
2. Test for less than 2 ohms between the low reference circuit terminal C and ground.
锟斤拷If greater than the specified value, test the low reference circuit for an open/high resistance. If the circuit tests normal, replace the MSM.
3. Ignition ON, test for 4.8-5.2 volts between the 5-volt reference circuit terminal A and ground.
锟斤拷If less than the specified range, test the 5-volt reference circuit for a short to ground or an open/high resistance. If the circuit tests normal,
replace the MSM.
锟斤拷If greater than the specified range, test the 5-volt reference circuit for a short to voltage. If the circuit tests normal, replace the MSM.
4. Verify the appropriate scan tool lumbar sensor parameter is less than 1 volt.
锟斤拷If greater than the specified range, test the appropriate signal circuit listed below for a short to voltage. If the circuit tests normal, replace
the MSM.
* Lumbar vertical position sensor terminal B
* Lumbar horizontal position sensor terminal D
5. Install a 3A fused jumper wire between the appropriate signal circuit listed below and the 5-volt reference circuit terminal A. Verify the
appropriate scan tool lumbar sensor parameter is greater than 4.75 volts.
* Lumbar vertical position sensor terminal B
* Lumbar horizontal position sensor terminal D
锟斤拷If less than the specified range, test the signal circuit for short to ground or an open/high resistance. If the circuit tests normal, replace the
MSM.
6. If all circuits test normal, test or replace the lumbar position sensor.
Repair Instructions
Perform the Diagnostic Repair Verification (See: Verification Tests) after completing the diagnostic procedure.
* Front Seat Adjuster Replacement (with HP2) ()Front Seat Adjuster Replacement (without HP2) ()
* Seat Lumbar Sub System Replacement ()
* Front Seat Recliner Actuator Motor Replacement ()
* Control Module References (See: Testing and Inspection/Programming and Relearning) for MSM replacement, setup, and programming
2010 Cadillac Truck Escalade EXT AWD V8-6.2L Page 1777
2010 Cadillac Truck Escalade EXT AWD V8-6.2L Page 1777
Diagnostic Aids
Using the Failure Records data may help locate an intermittent condition. If you cannot duplicate the DTC, the information in the Failure Records
can help determine how many miles since the DTC set. The Fail Counter and Pass Counter can help determine how many ignition cycles that the
diagnostic test reported a pass and/or a fail.
Reference Information
Schematic Reference
Engine Controls Schematics (See: Diagrams/Electrical Diagrams/Powertrain Management/System Diagram)
Connector End View Reference
Component Connector End Views (See: Diagrams/Connector Views)
Description and Operation
Fuel System Description (See: Powertrain Management/Computers and Control Systems/Description and Operation/Fuel System Description)
Electrical Information Reference
* Circuit Testing (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic Procedures/Circuit
Testing/Circuit Testing)
* Testing for Intermittent Conditions and Poor Connections (See: Testing and Inspection/Component Tests and General Diagnostics/General
Electrical Diagnostic Procedures/Circuit Testing/Testing for Intermittent Conditions and Poor Connections)
* Connector Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic
Procedures/Connector Repairs/Connector Repairs)
* Wiring Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic Procedures/Wiring
Repairs/Wiring Repairs)
DTC Type Reference
Powertrain Diagnostic Trouble Code (DTC) Type Definitions (See: Diagnostic Trouble Code Descriptions/Powertrain Diagnostic Trouble Code
(DTC) Type Definitions)
Scan Tool Reference
Control Module References (See: Testing and Inspection/Programming and Relearning) for scan tool information
Circuit/System Testing
Note: Verify that the fuel tank is not empty. Only perform this diagnostic if there is at least 2 gallons of fuel in the fuel tank. Clear the DTC, and
start and run the engine. Verify that the DTC P0118B resets before proceeding with the circuit system testing. If the DTC does not reset, refer to
diagnostic aids.
1. Ignition OFF, disconnect the harness connector at the B47 fuel pressure sensor.
2. Ignition OFF, test for less than 1 ohm between the low reference circuit terminal 2 and ground.
瀚慖f greater than the specified range, test the low reference circuit for an open/high resistance. If the circuit tests normal, replace the K27
fuel pump flow control module.
3. Ignition ON, test for 4.8-5.2 V between the B47 fuel pressure sensor 5 V reference circuit terminal 3 and ground.
瀚慖f less than the specified range, test the 5 V reference circuit for a short to ground or an open/high resistance. If the circuit tests normal,
replace the K27 fuel pump flow control module.
瀚慖f greater than the specified range, test the 5 V reference circuit for a short to voltage. If the circuit tests normal, replace the K27 fuel
pump flow control module.
4. Verify the scan tool 5 V reference is less than 1 V.
瀚慖f greater than the specified range, test the signal circuit terminal 1 for a short to voltage. If the circuit tests normal, replace the K27 fuel
pump flow control module.
5. Install a 3 A fused jumper wire between the signal circuit terminal 1 and the 5 V reference circuit terminal 3. Verify the scan tool 5 V
reference is greater than 4.8 V.
瀚慖f less than the specified range, test the signal circuit for a short to ground or an open/high resistance. If the circuit tests normal, replace
the K27 fuel pump flow control module.
6. If all circuits test normal, replace the B47 fuel pressure sensor.
Diagnostic Aids
Using the Failure Records data may help locate an intermittent condition. If you cannot duplicate the DTC, the information in the Failure Records
can help determine how many miles since the DTC set. The Fail Counter and Pass Counter can help determine how many ignition cycles that the
diagnostic test reported a pass and/or a fail.
Reference Information
Schematic Reference
Engine Controls Schematics (See: Diagrams/Electrical Diagrams/Powertrain Management/System Diagram)
Connector End View Reference
Component Connector End Views (See: Diagrams/Connector Views)
Description and Operation
Fuel System Description (See: Powertrain Management/Computers and Control Systems/Description and Operation/Fuel System Description)
Electrical Information Reference
* Circuit Testing (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic Procedures/Circuit
Testing/Circuit Testing)
* Testing for Intermittent Conditions and Poor Connections (See: Testing and Inspection/Component Tests and General Diagnostics/General
Electrical Diagnostic Procedures/Circuit Testing/Testing for Intermittent Conditions and Poor Connections)
* Connector Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic
Procedures/Connector Repairs/Connector Repairs)
* Wiring Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic Procedures/Wiring
Repairs/Wiring Repairs)
DTC Type Reference
Powertrain Diagnostic Trouble Code (DTC) Type Definitions (See: Diagnostic Trouble Code Descriptions/Powertrain Diagnostic Trouble Code
(DTC) Type Definitions)
Scan Tool Reference
Control Module References (See: Testing and Inspection/Programming and Relearning) for scan tool information
Circuit/System Testing
Note: Verify that the fuel tank is not empty. Only perform this diagnostic if there is at least 2 gallons of fuel in the fuel tank. Clear the DTC, and
start and run the engine. Verify that the DTC P0118B resets before proceeding with the circuit system testing. If the DTC does not reset, refer to
diagnostic aids.
1. Ignition OFF, disconnect the harness connector at the B47 fuel pressure sensor.
2. Ignition OFF, test for less than 1 ohm between the low reference circuit terminal 2 and ground.
瀚慖f greater than the specified range, test the low reference circuit for an open/high resistance. If the circuit tests normal, replace the K27
fuel pump flow control module.
3. Ignition ON, test for 4.8-5.2 V between the B47 fuel pressure sensor 5 V reference circuit terminal 3 and ground.
瀚慖f less than the specified range, test the 5 V reference circuit for a short to ground or an open/high resistance. If the circuit tests normal,
replace the K27 fuel pump flow control module.
瀚慖f greater than the specified range, test the 5 V reference circuit for a short to voltage. If the circuit tests normal, replace the K27 fuel
pump flow control module.
4. Verify the scan tool 5 V reference is less than 1 V.
瀚慖f greater than the specified range, test the signal circuit terminal 1 for a short to voltage. If the circuit tests normal, replace the K27 fuel
pump flow control module.
5. Install a 3 A fused jumper wire between the signal circuit terminal 1 and the 5 V reference circuit terminal 3. Verify the scan tool 5 V
reference is greater than 4.8 V.
瀚慖f less than the specified range, test the signal circuit for a short to ground or an open/high resistance. If the circuit tests normal, replace
the K27 fuel pump flow control module.
6. If all circuits test normal, replace the B47 fuel pressure sensor.
2010 Cadillac Truck Escalade ESV AWD V8-6.2L Page 1752
2010 Cadillac Truck Escalade ESV AWD V8-6.2L Page 1752
Systems/Oxygen Sensor/Service Precautions/Heated Oxygen Sensor Resistance Learn Reset Caution).
Perform the Diagnostic Repair Verification (See: Verification Tests) after completing the diagnostic procedure.
* Heated Oxygen Sensor Replacement - Bank 1 Sensor 1 (1500 Series) (See: Powertrain Management/Computers and Control
Systems/Oxygen Sensor/Service and Repair)Heated Oxygen Sensor Replacement - Bank 1 Sensor 1 (2500 Series) (See: Powertrain
Management/Computers and Control Systems/Oxygen Sensor/Service and Repair)
* Heated Oxygen Sensor Replacement - Bank 1 Sensor 2 (1500 Series) (See: Powertrain Management/Computers and Control
Systems/Oxygen Sensor/Service and Repair)Heated Oxygen Sensor Replacement - Bank 1 Sensor 2 (2500 Series) (See: Powertrain
Management/Computers and Control Systems/Oxygen Sensor/Service and Repair)
* Heated Oxygen Sensor Replacement - Bank 2 Sensor 1 (1500 Series) (See: Powertrain Management/Computers and Control
Systems/Oxygen Sensor/Service and Repair)Heated Oxygen Sensor Replacement - Bank 2 Sensor 1 (2500 Series) (See: Powertrain
Management/Computers and Control Systems/Oxygen Sensor/Service and Repair)
* Heated Oxygen Sensor Replacement - Bank 2 Sensor 2 (1500 Series) (See: Powertrain Management/Computers and Control
Systems/Oxygen Sensor/Service and Repair)Heated Oxygen Sensor Replacement - Bank 2 Sensor 2 (2500 Series) (See: Powertrain
Management/Computers and Control Systems/Oxygen Sensor/Service and Repair)
* Control Module References (See: Testing and Inspection/Programming and Relearning) for ECM replacement, setup, and programming
P014B
DTC P0133, P013A-P013F, P014A, P014B, P0153, P1133, or P1153
Diagnostic Instructions
* Perform the Diagnostic System Check - Vehicle (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic System
Check - Vehicle) prior to using this diagnostic procedure.
* Review Strategy Based Diagnosis (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Strategy Based Diagnosis) for an
overview of the diagnostic approach.
* Diagnostic Procedure Instructions (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic Procedure
Instructions) provides an overview of each diagnostic category.
DTC Descriptors
DTC P0133
- HO2S Slow Response Bank 1 Sensor 1
DTC P013A
- HO2S Slow Response Rich to Lean Bank 1 Sensor 2
DTC P013B
- HO2S Slow Response Lean to Rich Bank 1 Sensor 2
DTC P013C
- HO2S Slow Response Rich to Lean Bank 2 Sensor 2
DTC P013D
- HO2S Slow Response Lean to Rich Bank 2 Sensor 2
DTC P013E
- HO2S Delayed Response Rich to Lean Bank 1 Sensor 2
DTC P013F
- HO2S Delayed Response Lean to Rich Bank 1 Sensor 2
DTC P014A
- HO2S Delayed Response Rich to Lean Bank 2 Sensor 2
DTC P014B
- HO2S Delayed Response Lean to Rich Bank 2 Sensor 2
DTC P0153
- HO2S Slow Response Bank 2 Sensor 1
DTC P1133
- HO2S Insufficient Switching Bank 1 Sensor 1
DTC P1153
- HO2S Insufficient Switching Bank 2 Sensor 1
Diagnostic Fault Information
Systems/Oxygen Sensor/Service Precautions/Heated Oxygen Sensor Resistance Learn Reset Caution).
Perform the Diagnostic Repair Verification (See: Verification Tests) after completing the diagnostic procedure.
* Heated Oxygen Sensor Replacement - Bank 1 Sensor 1 (1500 Series) (See: Powertrain Management/Computers and Control
Systems/Oxygen Sensor/Service and Repair)Heated Oxygen Sensor Replacement - Bank 1 Sensor 1 (2500 Series) (See: Powertrain
Management/Computers and Control Systems/Oxygen Sensor/Service and Repair)
* Heated Oxygen Sensor Replacement - Bank 1 Sensor 2 (1500 Series) (See: Powertrain Management/Computers and Control
Systems/Oxygen Sensor/Service and Repair)Heated Oxygen Sensor Replacement - Bank 1 Sensor 2 (2500 Series) (See: Powertrain
Management/Computers and Control Systems/Oxygen Sensor/Service and Repair)
* Heated Oxygen Sensor Replacement - Bank 2 Sensor 1 (1500 Series) (See: Powertrain Management/Computers and Control
Systems/Oxygen Sensor/Service and Repair)Heated Oxygen Sensor Replacement - Bank 2 Sensor 1 (2500 Series) (See: Powertrain
Management/Computers and Control Systems/Oxygen Sensor/Service and Repair)
* Heated Oxygen Sensor Replacement - Bank 2 Sensor 2 (1500 Series) (See: Powertrain Management/Computers and Control
Systems/Oxygen Sensor/Service and Repair)Heated Oxygen Sensor Replacement - Bank 2 Sensor 2 (2500 Series) (See: Powertrain
Management/Computers and Control Systems/Oxygen Sensor/Service and Repair)
* Control Module References (See: Testing and Inspection/Programming and Relearning) for ECM replacement, setup, and programming
P014B
DTC P0133, P013A-P013F, P014A, P014B, P0153, P1133, or P1153
Diagnostic Instructions
* Perform the Diagnostic System Check - Vehicle (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic System
Check - Vehicle) prior to using this diagnostic procedure.
* Review Strategy Based Diagnosis (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Strategy Based Diagnosis) for an
overview of the diagnostic approach.
* Diagnostic Procedure Instructions (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic Procedure
Instructions) provides an overview of each diagnostic category.
DTC Descriptors
DTC P0133
- HO2S Slow Response Bank 1 Sensor 1
DTC P013A
- HO2S Slow Response Rich to Lean Bank 1 Sensor 2
DTC P013B
- HO2S Slow Response Lean to Rich Bank 1 Sensor 2
DTC P013C
- HO2S Slow Response Rich to Lean Bank 2 Sensor 2
DTC P013D
- HO2S Slow Response Lean to Rich Bank 2 Sensor 2
DTC P013E
- HO2S Delayed Response Rich to Lean Bank 1 Sensor 2
DTC P013F
- HO2S Delayed Response Lean to Rich Bank 1 Sensor 2
DTC P014A
- HO2S Delayed Response Rich to Lean Bank 2 Sensor 2
DTC P014B
- HO2S Delayed Response Lean to Rich Bank 2 Sensor 2
DTC P0153
- HO2S Slow Response Bank 2 Sensor 1
DTC P1133
- HO2S Insufficient Switching Bank 1 Sensor 1
DTC P1153
- HO2S Insufficient Switching Bank 2 Sensor 1
Diagnostic Fault Information
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2010 Cadillac Truck Escalade ESV AWD V8-6.2L Page 585
Diagnostic Aids
* All position sensors use common ground and 5-volt reference circuits.
* If the 5-volt reference circuit is shorted to voltage, multiple codes will set.
* If the 5-volt reference circuit is shorted to ground, multiple codes will set.
* If the sensor ground circuit is open, multiple codes will set.
Reference Information
Schematic Reference
Driver Seat Schematics ()
Connector End View Reference
Component Connector End Views (See: Diagrams/Connector Views)
Description and Operation
Memory Seats Description and Operation ()
Electrical Information Reference
* Circuit Testing (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic Procedures/Circuit
Testing/Circuit Testing)
* Connector Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic
Procedures/Connector Repairs/Connector Repairs)
* Testing for Intermittent Conditions and Poor Connections (See: Testing and Inspection/Component Tests and General Diagnostics/General
Electrical Diagnostic Procedures/Circuit Testing/Testing for Intermittent Conditions and Poor Connections)
* Wiring Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic Procedures/Wiring
Repairs/Wiring Repairs)
Scan Tool Reference
Control Module References (See: Testing and Inspection/Programming and Relearning) for scan tool information
Circuit/System Verification
Ignition ON, observe the scan tool Driver Position Module driver seat and lumbar position sensor parameters. The readings should be between
0.22-2.75 volts and change while adjusting seat and lumbar positions.
Circuit/System Testing
B1825 01 or B1825 06
1. Ignition OFF, disconnect the harness connector at the seat recline position sensor.
2. Test for less than 2 ohms between the low reference circuit terminal 1 and ground.
锟斤拷If greater than the specified range, test the low reference circuit for an open/high resistance. If the circuit tests normal, replace the MSM.
3. Ignition ON, test for 4.8-5.2 volts between the 5-volt reference circuit terminal 3 and ground.
锟斤拷If less than the specified range, test the 5-volt reference circuit for a short to ground or an open/high resistance. If the circuit tests normal,
replace the MSM.
锟斤拷If greater than the specified range, test the 5-volt reference circuit for a short to voltage. If the circuit tests normal, replace the MSM.
4. Verify the scan tool Driver Seat Recline Sensor parameter is less than 1 volt.
锟斤拷If greater than the specified range, test the signal circuit terminal 2 for a short to voltage. If the circuit tests normal, replace the MSM.
5. Install a 3A fused jumper wire between the signal circuit terminal 2 and the 5-volt reference circuit terminal 3. Verify the scan tool Driver
Seat Recline Sensor parameter is greater than 4.75 volts.
锟斤拷If less than the specified range, test the signal circuit for short to ground or an open/high resistance. If the circuit tests normal, replace the
MSM.
6. If all circuits test normal, test or replace the seat recline position sensor.
B2355 01, B2355 06, B2365 01, B2365 06, B2375 01 or B2375 06
1. Ignition OFF, disconnect the X2 harness connector at the seat adjuster assembly.
2. Test for less than 2 ohms between the low reference circuit terminal 2 and ground.
锟斤拷If greater than the specified range, test the low reference circuit for an open/high resistance. If the circuit tests normal, replace the MSM.
Diagnostic Aids
* All position sensors use common ground and 5-volt reference circuits.
* If the 5-volt reference circuit is shorted to voltage, multiple codes will set.
* If the 5-volt reference circuit is shorted to ground, multiple codes will set.
* If the sensor ground circuit is open, multiple codes will set.
Reference Information
Schematic Reference
Driver Seat Schematics ()
Connector End View Reference
Component Connector End Views (See: Diagrams/Connector Views)
Description and Operation
Memory Seats Description and Operation ()
Electrical Information Reference
* Circuit Testing (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic Procedures/Circuit
Testing/Circuit Testing)
* Connector Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic
Procedures/Connector Repairs/Connector Repairs)
* Testing for Intermittent Conditions and Poor Connections (See: Testing and Inspection/Component Tests and General Diagnostics/General
Electrical Diagnostic Procedures/Circuit Testing/Testing for Intermittent Conditions and Poor Connections)
* Wiring Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic Procedures/Wiring
Repairs/Wiring Repairs)
Scan Tool Reference
Control Module References (See: Testing and Inspection/Programming and Relearning) for scan tool information
Circuit/System Verification
Ignition ON, observe the scan tool Driver Position Module driver seat and lumbar position sensor parameters. The readings should be between
0.22-2.75 volts and change while adjusting seat and lumbar positions.
Circuit/System Testing
B1825 01 or B1825 06
1. Ignition OFF, disconnect the harness connector at the seat recline position sensor.
2. Test for less than 2 ohms between the low reference circuit terminal 1 and ground.
锟斤拷If greater than the specified range, test the low reference circuit for an open/high resistance. If the circuit tests normal, replace the MSM.
3. Ignition ON, test for 4.8-5.2 volts between the 5-volt reference circuit terminal 3 and ground.
锟斤拷If less than the specified range, test the 5-volt reference circuit for a short to ground or an open/high resistance. If the circuit tests normal,
replace the MSM.
锟斤拷If greater than the specified range, test the 5-volt reference circuit for a short to voltage. If the circuit tests normal, replace the MSM.
4. Verify the scan tool Driver Seat Recline Sensor parameter is less than 1 volt.
锟斤拷If greater than the specified range, test the signal circuit terminal 2 for a short to voltage. If the circuit tests normal, replace the MSM.
5. Install a 3A fused jumper wire between the signal circuit terminal 2 and the 5-volt reference circuit terminal 3. Verify the scan tool Driver
Seat Recline Sensor parameter is greater than 4.75 volts.
锟斤拷If less than the specified range, test the signal circuit for short to ground or an open/high resistance. If the circuit tests normal, replace the
MSM.
6. If all circuits test normal, test or replace the seat recline position sensor.
B2355 01, B2355 06, B2365 01, B2365 06, B2375 01 or B2375 06
1. Ignition OFF, disconnect the X2 harness connector at the seat adjuster assembly.
2. Test for less than 2 ohms between the low reference circuit terminal 2 and ground.
锟斤拷If greater than the specified range, test the low reference circuit for an open/high resistance. If the circuit tests normal, replace the MSM.
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2010 Cadillac Truck Escalade EXT AWD V8-6.2L Page 3142
* Communication may be available between the BCM and the scan tool with either the low or high speed GMLAN serial data system
inoperative. This condition is due to the BCM using both the low and high speed GMLAN systems.
* Use to determine if the module uses high or low speed GMLAN serial data communications.
* Some control modules may not have internal protection for specific control circuits and may open a B+ or ignition fuse. If a fuse is open and
the B+ or ignition circuit is not shorted to ground, ensure none of the control circuits are shorted to ground before replacing the control
module.
* This diagnostic can be used for any control module that is not communicating, regardless of the type of serial data circuit it is connected to,
providing the vehicle is equipped with the control module.
Reference Information
Schematic Reference
* Data Communication Schematics (See: Powertrain Management/Computers and Control Systems/Information Bus/Diagrams/Electrical
Diagrams)
* Antilock Brake System Schematics (See: Brakes and Traction Control/Antilock Brakes / Traction Control Systems/Diagrams/Electrical
Diagrams) for the ABS - Hybrid
* Antilock Brake System Schematics (See: Brakes and Traction Control/Antilock Brakes / Traction Control Systems/Diagrams/Electrical
Diagrams) for the ABS - Non-Hybrid Less than 3900 kg (8600 lb) GVW
* Antilock Brake System Schematics (See: Brakes and Traction Control/Antilock Brakes / Traction Control Systems/Diagrams/Electrical
Diagrams) for the ABS - Non-Hybrid Greater than/Equal to 3900 kg (8600 lb) GVW
Connector End View Reference
Component Connector End Views (See: Diagrams/Connector Views)
Description and Operation
Data Link Communications Description and Operation (See: Powertrain Management/Computers and Control Systems/Information
Bus/Description and Operation)
Electrical Information Reference
* Circuit Testing (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic Procedures/Circuit
Testing/Circuit Testing)
* Connector Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic
Procedures/Connector Repairs/Connector Repairs)
* Testing for Intermittent Conditions and Poor Connections (See: Testing and Inspection/Component Tests and General Diagnostics/General
Electrical Diagnostic Procedures/Circuit Testing/Testing for Intermittent Conditions and Poor Connections)
* Wiring Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic Procedures/Wiring
Repairs/Wiring Repairs)
Scan Tool Reference
Control Module References (See: Testing and Inspection/Programming and Relearning) for scan tool information
Circuit/System Testing
1. Ignition OFF, disconnect the harness connector of the yaw rate sensor.
2. Ignition ON, verify that a test lamp illuminates between the module voltage circuit and ground.
瀚慖f the test lamp does not illuminate, test the circuit for a short to ground or an open/high resistance. If the circuit tests normal, replace the
EBCM.
3. Ignition OFF, test for less than 5 ohms between the module ground circuits and ground.
瀚慖f greater than the specified value, test the ground circuit for an open/high resistance. If the circuit tests normal, replace the EBCM.
4. If all circuits test normal, replace the yaw rate sensor.
Repair Instructions
Perform the Diagnostic Repair Verification (See: Verification Tests) after completing the diagnostic procedure.
* GMLAN Wiring Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic
Procedures/Wiring Repairs/GMLAN Wiring Repairs)
* ABS Description and Operation (See: Brakes and Traction Control/Antilock Brakes / Traction Control Systems/Description and
Operation/ABS Description and Operation) for the ABS - Hybrid
* Vehicle Yaw Sensor with Vehicle Lateral Accelerometer Replacement (See: Brakes and Traction Control/Antilock Brakes / Traction
Control Systems/Yaw Rate Sensor/Service and Repair/Less than 3900 kg (8600 lb) GVW) for the ABS - Non-Hybrid Less than 3900 kg
(8600 lb) GVW
* Vehicle Yaw Sensor with Vehicle Lateral Accelerometer Replacement (See: Brakes and Traction Control/Antilock Brakes / Traction
Control Systems/Yaw Rate Sensor/Service and Repair/Less than 3900 kg (8600 lb) GVW) for the ABS - Non-Hybrid Greater than/Equal to
* Communication may be available between the BCM and the scan tool with either the low or high speed GMLAN serial data system
inoperative. This condition is due to the BCM using both the low and high speed GMLAN systems.
* Use to determine if the module uses high or low speed GMLAN serial data communications.
* Some control modules may not have internal protection for specific control circuits and may open a B+ or ignition fuse. If a fuse is open and
the B+ or ignition circuit is not shorted to ground, ensure none of the control circuits are shorted to ground before replacing the control
module.
* This diagnostic can be used for any control module that is not communicating, regardless of the type of serial data circuit it is connected to,
providing the vehicle is equipped with the control module.
Reference Information
Schematic Reference
* Data Communication Schematics (See: Powertrain Management/Computers and Control Systems/Information Bus/Diagrams/Electrical
Diagrams)
* Antilock Brake System Schematics (See: Brakes and Traction Control/Antilock Brakes / Traction Control Systems/Diagrams/Electrical
Diagrams) for the ABS - Hybrid
* Antilock Brake System Schematics (See: Brakes and Traction Control/Antilock Brakes / Traction Control Systems/Diagrams/Electrical
Diagrams) for the ABS - Non-Hybrid Less than 3900 kg (8600 lb) GVW
* Antilock Brake System Schematics (See: Brakes and Traction Control/Antilock Brakes / Traction Control Systems/Diagrams/Electrical
Diagrams) for the ABS - Non-Hybrid Greater than/Equal to 3900 kg (8600 lb) GVW
Connector End View Reference
Component Connector End Views (See: Diagrams/Connector Views)
Description and Operation
Data Link Communications Description and Operation (See: Powertrain Management/Computers and Control Systems/Information
Bus/Description and Operation)
Electrical Information Reference
* Circuit Testing (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic Procedures/Circuit
Testing/Circuit Testing)
* Connector Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic
Procedures/Connector Repairs/Connector Repairs)
* Testing for Intermittent Conditions and Poor Connections (See: Testing and Inspection/Component Tests and General Diagnostics/General
Electrical Diagnostic Procedures/Circuit Testing/Testing for Intermittent Conditions and Poor Connections)
* Wiring Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic Procedures/Wiring
Repairs/Wiring Repairs)
Scan Tool Reference
Control Module References (See: Testing and Inspection/Programming and Relearning) for scan tool information
Circuit/System Testing
1. Ignition OFF, disconnect the harness connector of the yaw rate sensor.
2. Ignition ON, verify that a test lamp illuminates between the module voltage circuit and ground.
瀚慖f the test lamp does not illuminate, test the circuit for a short to ground or an open/high resistance. If the circuit tests normal, replace the
EBCM.
3. Ignition OFF, test for less than 5 ohms between the module ground circuits and ground.
瀚慖f greater than the specified value, test the ground circuit for an open/high resistance. If the circuit tests normal, replace the EBCM.
4. If all circuits test normal, replace the yaw rate sensor.
Repair Instructions
Perform the Diagnostic Repair Verification (See: Verification Tests) after completing the diagnostic procedure.
* GMLAN Wiring Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic
Procedures/Wiring Repairs/GMLAN Wiring Repairs)
* ABS Description and Operation (See: Brakes and Traction Control/Antilock Brakes / Traction Control Systems/Description and
Operation/ABS Description and Operation) for the ABS - Hybrid
* Vehicle Yaw Sensor with Vehicle Lateral Accelerometer Replacement (See: Brakes and Traction Control/Antilock Brakes / Traction
Control Systems/Yaw Rate Sensor/Service and Repair/Less than 3900 kg (8600 lb) GVW) for the ABS - Non-Hybrid Less than 3900 kg
(8600 lb) GVW
* Vehicle Yaw Sensor with Vehicle Lateral Accelerometer Replacement (See: Brakes and Traction Control/Antilock Brakes / Traction
Control Systems/Yaw Rate Sensor/Service and Repair/Less than 3900 kg (8600 lb) GVW) for the ABS - Non-Hybrid Greater than/Equal to
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瀚慖f the DTC resets, program the PIM with the latest software version and recheck for DTCs. If the DTC resets after programming or if the
PIM already contains the latest software version, replace the PIM.
Repair Instructions
Perform the Diagnostic Repair Verification (See: Verification Tests) after completing the diagnostic procedure.
Control Module References (See: Testing and Inspection/Programming and Relearning) for PIM replacement, setup, and programming.
P018B
DTC P018B-P018D
Diagnostic Instructions
* Perform the Diagnostic System Check - Vehicle (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic System
Check - Vehicle) prior to using this diagnostic procedure.
* Review Strategy Based Diagnosis (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Strategy Based Diagnosis) for an
overview of the diagnostic approach.
* Diagnostic Procedure Instructions (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic Procedure
Instructions) provides an overview of each diagnostic category.
DTC Descriptors
DTC P018B
- Fuel Pressure Sensor Performance
DTC P018C
- Fuel Pressure Sensor Circuit Low Voltage
DTC P018D
- Fuel Pressure Sensor Circuit High Voltage
Diagnostic Fault Information
Circuit/System Description
The fuel pressure sensor is located on the fuel line. The fuel pressure sensor monitors the fuel pressure in the fuel line. The fuel pump flow control
module monitors the voltage signal from the fuel pressure sensor.
Conditions for Running the DTC
* The engine is running.
* DTC P018C, P018D, P0231, P0232, P023F, P064A, P1255 or P06A6 are not active.
* DTC P0641 has not failed this ignition cycle.
* Fuel pump control is enabled and the fuel pump control state is normal.
* The engine has been running for at least 5 seconds.
Conditions for Setting the DTC
The fuel pump control module does not detect a change in the fuel rail pressure of at least 30 kPa (4.4 psi) when the fuel pump is operating. The
fuel rail pressure sensor performance diagnostic provides a means to detect fuel pressure sensor output that is stuck within the normal operating
range of the sensor.
Action Taken When the DTC Sets
DTC P018B, P018C and P018D are Type A DTCs.
Conditions for Clearing the DTC
DTC P018B, P018C and P018D are Type A DTCs.
瀚慖f the DTC resets, program the PIM with the latest software version and recheck for DTCs. If the DTC resets after programming or if the
PIM already contains the latest software version, replace the PIM.
Repair Instructions
Perform the Diagnostic Repair Verification (See: Verification Tests) after completing the diagnostic procedure.
Control Module References (See: Testing and Inspection/Programming and Relearning) for PIM replacement, setup, and programming.
P018B
DTC P018B-P018D
Diagnostic Instructions
* Perform the Diagnostic System Check - Vehicle (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic System
Check - Vehicle) prior to using this diagnostic procedure.
* Review Strategy Based Diagnosis (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Strategy Based Diagnosis) for an
overview of the diagnostic approach.
* Diagnostic Procedure Instructions (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic Procedure
Instructions) provides an overview of each diagnostic category.
DTC Descriptors
DTC P018B
- Fuel Pressure Sensor Performance
DTC P018C
- Fuel Pressure Sensor Circuit Low Voltage
DTC P018D
- Fuel Pressure Sensor Circuit High Voltage
Diagnostic Fault Information
Circuit/System Description
The fuel pressure sensor is located on the fuel line. The fuel pressure sensor monitors the fuel pressure in the fuel line. The fuel pump flow control
module monitors the voltage signal from the fuel pressure sensor.
Conditions for Running the DTC
* The engine is running.
* DTC P018C, P018D, P0231, P0232, P023F, P064A, P1255 or P06A6 are not active.
* DTC P0641 has not failed this ignition cycle.
* Fuel pump control is enabled and the fuel pump control state is normal.
* The engine has been running for at least 5 seconds.
Conditions for Setting the DTC
The fuel pump control module does not detect a change in the fuel rail pressure of at least 30 kPa (4.4 psi) when the fuel pump is operating. The
fuel rail pressure sensor performance diagnostic provides a means to detect fuel pressure sensor output that is stuck within the normal operating
range of the sensor.
Action Taken When the DTC Sets
DTC P018B, P018C and P018D are Type A DTCs.
Conditions for Clearing the DTC
DTC P018B, P018C and P018D are Type A DTCs.
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2010 Cadillac Truck Escalade ESV AWD V8-6.2L Page 1751
Component Connector End Views (See: Diagrams/Connector Views)
Electrical Information Reference
* Circuit Testing (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic Procedures/Circuit
Testing/Circuit Testing)
* Connector Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic
Procedures/Connector Repairs/Connector Repairs)
* Testing for Intermittent Conditions and Poor Connections (See: Testing and Inspection/Component Tests and General Diagnostics/General
Electrical Diagnostic Procedures/Circuit Testing/Testing for Intermittent Conditions and Poor Connections)
* Wiring Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic Procedures/Wiring
Repairs/Wiring Repairs)
* Heated Oxygen Sensor Wiring Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical
Diagnostic Procedures/Wiring Repairs/Heated Oxygen Sensor Wiring Repairs)
DTC Type Reference
Powertrain Diagnostic Trouble Code (DTC) Type Definitions (See: Diagnostic Trouble Code Descriptions/Powertrain Diagnostic Trouble Code
(DTC) Type Definitions)
Scan Tool Reference
Control Module References (See: Testing and Inspection/Programming and Relearning) for scan tool information
Circuit/System Verification
* Observe the DTC information with a scan tool. Verify there are no B52 HO2S heater or fuel trim DTCs set.
锟斤拷If any DTCs are set, refer to Diagnostic Trouble Code (DTC) List - Vehicle (See: Diagnostic Trouble Code Descriptions/Diagnostic
Trouble Code (DTC) List - Vehicle).
* Engine idling at operating temperature, observe the appropriate B52 HO2S parameter with a scan tool. Verify the following:
- The B52 HO2S 1 value should vary from below 200 mV to above 800 mV and respond to fueling changes.
- The B52 HO2S 2 value should change greater than 200 mV when the throttle is quickly cycled 3 times from closed to wide open and
back to closed after running the engine at 1,500 RPM for 30 s.
* Operate the vehicle within the Conditions for Running the DTC to verify the DTC does not reset. You may also operate the vehicle within the
conditions that you observed from the Freeze Frame/Failure Records data.
Circuit/System Testing
1. Verify none of the following conditions exist:
* Lean or rich fuel injectors-Refer to Fuel Injector Diagnosis (CH47976) (See: Powertrain Management/Fuel Delivery and Air
Induction/Fuel Injector/Testing and Inspection)Fuel Injector Diagnosis (J39021 or Scan Tool) (See: Powertrain Management/Fuel
Delivery and Air Induction/Fuel Injector/Testing and Inspection)
* Water intrusion in the B52 HO2S harness connector
* Low or high fuel system pressure-Refer to Fuel System Diagnosis (w/o FPCM) (See: Powertrain Management/Computers and Control
Systems/Testing and Inspection/Component Tests and General Diagnostics)Fuel System Diagnosis (FPCM) (See: Powertrain
Management/Computers and Control Systems/Testing and Inspection/Component Tests and General Diagnostics)
* Fuel that is contaminated-Refer to Alcohol/Contaminants-in-Fuel Diagnosis (Without Special Tool) (See: Powertrain
Management/Computers and Control Systems/Testing and Inspection/Component Tests and General
Diagnostics/Alcohol/Contaminants-in-Fuel Diagnosis (Without Special Tool))Alcohol/Contaminants-in-Fuel Diagnosis (Special Tool) (
See: Powertrain Management/Fuel Delivery and Air Induction/Fuel/Testing and Inspection/Alcohol/Contaminants-in-Fuel Diagnosis
(Special Tool))
* Fuel saturation of the evaporative emission (EVAP) canister
* Exhaust leaks near the B52 HO2S
* Engine vacuum leaks
* Engine oil consumption-Refer to Oil Consumption Diagnosis (See: Engine, Cooling and Exhaust/Engine/Testing and
Inspection/Component Tests and General Diagnostics/Oil Consumption Diagnosis)
* Engine coolant consumption-Refer to Loss of Coolant (See: Engine, Cooling and Exhaust/Cooling System/Testing and
Inspection/Symptom Related Diagnostic Procedures/Loss of Coolant)
锟斤拷If you find any of the above conditions, repair as necessary.
2. If all conditions test normal, test or replace the appropriate B52 HO2S.
Repair Instructions
Caution: Refer to Heated Oxygen Sensor Resistance Learn Reset Caution (See: Powertrain Management/Computers and Control
Component Connector End Views (See: Diagrams/Connector Views)
Electrical Information Reference
* Circuit Testing (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic Procedures/Circuit
Testing/Circuit Testing)
* Connector Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic
Procedures/Connector Repairs/Connector Repairs)
* Testing for Intermittent Conditions and Poor Connections (See: Testing and Inspection/Component Tests and General Diagnostics/General
Electrical Diagnostic Procedures/Circuit Testing/Testing for Intermittent Conditions and Poor Connections)
* Wiring Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic Procedures/Wiring
Repairs/Wiring Repairs)
* Heated Oxygen Sensor Wiring Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical
Diagnostic Procedures/Wiring Repairs/Heated Oxygen Sensor Wiring Repairs)
DTC Type Reference
Powertrain Diagnostic Trouble Code (DTC) Type Definitions (See: Diagnostic Trouble Code Descriptions/Powertrain Diagnostic Trouble Code
(DTC) Type Definitions)
Scan Tool Reference
Control Module References (See: Testing and Inspection/Programming and Relearning) for scan tool information
Circuit/System Verification
* Observe the DTC information with a scan tool. Verify there are no B52 HO2S heater or fuel trim DTCs set.
锟斤拷If any DTCs are set, refer to Diagnostic Trouble Code (DTC) List - Vehicle (See: Diagnostic Trouble Code Descriptions/Diagnostic
Trouble Code (DTC) List - Vehicle).
* Engine idling at operating temperature, observe the appropriate B52 HO2S parameter with a scan tool. Verify the following:
- The B52 HO2S 1 value should vary from below 200 mV to above 800 mV and respond to fueling changes.
- The B52 HO2S 2 value should change greater than 200 mV when the throttle is quickly cycled 3 times from closed to wide open and
back to closed after running the engine at 1,500 RPM for 30 s.
* Operate the vehicle within the Conditions for Running the DTC to verify the DTC does not reset. You may also operate the vehicle within the
conditions that you observed from the Freeze Frame/Failure Records data.
Circuit/System Testing
1. Verify none of the following conditions exist:
* Lean or rich fuel injectors-Refer to Fuel Injector Diagnosis (CH47976) (See: Powertrain Management/Fuel Delivery and Air
Induction/Fuel Injector/Testing and Inspection)Fuel Injector Diagnosis (J39021 or Scan Tool) (See: Powertrain Management/Fuel
Delivery and Air Induction/Fuel Injector/Testing and Inspection)
* Water intrusion in the B52 HO2S harness connector
* Low or high fuel system pressure-Refer to Fuel System Diagnosis (w/o FPCM) (See: Powertrain Management/Computers and Control
Systems/Testing and Inspection/Component Tests and General Diagnostics)Fuel System Diagnosis (FPCM) (See: Powertrain
Management/Computers and Control Systems/Testing and Inspection/Component Tests and General Diagnostics)
* Fuel that is contaminated-Refer to Alcohol/Contaminants-in-Fuel Diagnosis (Without Special Tool) (See: Powertrain
Management/Computers and Control Systems/Testing and Inspection/Component Tests and General
Diagnostics/Alcohol/Contaminants-in-Fuel Diagnosis (Without Special Tool))Alcohol/Contaminants-in-Fuel Diagnosis (Special Tool) (
See: Powertrain Management/Fuel Delivery and Air Induction/Fuel/Testing and Inspection/Alcohol/Contaminants-in-Fuel Diagnosis
(Special Tool))
* Fuel saturation of the evaporative emission (EVAP) canister
* Exhaust leaks near the B52 HO2S
* Engine vacuum leaks
* Engine oil consumption-Refer to Oil Consumption Diagnosis (See: Engine, Cooling and Exhaust/Engine/Testing and
Inspection/Component Tests and General Diagnostics/Oil Consumption Diagnosis)
* Engine coolant consumption-Refer to Loss of Coolant (See: Engine, Cooling and Exhaust/Cooling System/Testing and
Inspection/Symptom Related Diagnostic Procedures/Loss of Coolant)
锟斤拷If you find any of the above conditions, repair as necessary.
2. If all conditions test normal, test or replace the appropriate B52 HO2S.
Repair Instructions
Caution: Refer to Heated Oxygen Sensor Resistance Learn Reset Caution (See: Powertrain Management/Computers and Control
2010 Cadillac Truck Escalade ESV AWD V8-6.2L Page 584
2010 Cadillac Truck Escalade ESV AWD V8-6.2L Page 584
- Left Seat Assembly Horizontal Position Sensor Circuit Short to Ground or Open
DTC B2375 5A
- Left Seat Assembly Horizontal Position Sensor Circuit Plausibility Failure
Diagnostic Fault Information
Circuit Description
The position sensor that sets this diagnostic trouble code (DTC) is either attached to the seat directional motor drive cable or directly to the motor it
monitors. It receives a 5-volt reference and ground from the memory seat module (MSM). The sensor sends a voltage signal that varies with the
movement of the seat through the signal circuit to the MSM. Then based on this voltage signal, the MSM determines the position of the seat.
Conditions for Running the DTC
The memory seat module must be powered.
Conditions for Setting the DTC
B1825 01, B1850 01, B1860 01, B2355 01, B2365 01, B2375 01
If the MSM sees the analog input from this sensor is greater than 4.75 volts, the sensor will be considered out of range and the MSM will set this
DTC.
B1825 06, B1850 06, B1860 06, B2355 06, B2365 06, B2375 06
If the MSM sees the analog input from this sensor is less than 0.22 volts, the sensor will be considered out of range and the MSM will set this DTC.
B1825 5A, B1850 5A, B1860 5A, B2355 5A, B2365 5A, B2375 5A
This DTC will set, if the MSM is controlling a motor in one direction and its position sensor is tracking the motor in the opposite direction. The
sensor is either mounted or wired incorrectly, or the polarity of the motor control circuits are reversed.
Action Taken When the DTC Sets
The MSM disables the memory recall and easy exit/entry action commands of the motor monitored by the sensor. The motor will respond to
manual positioning commands.
Conditions for Clearing the DTC
* The current DTC will clear and set to history, when the MSM sees the analog input from the sensor as between 0.22-4.75 volts and the
ignition is cycled OFF then back to ACC or RUN.
* A history DTC will clear after 50 consecutive fault-free ignition cycles have occurred.
- Left Seat Assembly Horizontal Position Sensor Circuit Short to Ground or Open
DTC B2375 5A
- Left Seat Assembly Horizontal Position Sensor Circuit Plausibility Failure
Diagnostic Fault Information
Circuit Description
The position sensor that sets this diagnostic trouble code (DTC) is either attached to the seat directional motor drive cable or directly to the motor it
monitors. It receives a 5-volt reference and ground from the memory seat module (MSM). The sensor sends a voltage signal that varies with the
movement of the seat through the signal circuit to the MSM. Then based on this voltage signal, the MSM determines the position of the seat.
Conditions for Running the DTC
The memory seat module must be powered.
Conditions for Setting the DTC
B1825 01, B1850 01, B1860 01, B2355 01, B2365 01, B2375 01
If the MSM sees the analog input from this sensor is greater than 4.75 volts, the sensor will be considered out of range and the MSM will set this
DTC.
B1825 06, B1850 06, B1860 06, B2355 06, B2365 06, B2375 06
If the MSM sees the analog input from this sensor is less than 0.22 volts, the sensor will be considered out of range and the MSM will set this DTC.
B1825 5A, B1850 5A, B1860 5A, B2355 5A, B2365 5A, B2375 5A
This DTC will set, if the MSM is controlling a motor in one direction and its position sensor is tracking the motor in the opposite direction. The
sensor is either mounted or wired incorrectly, or the polarity of the motor control circuits are reversed.
Action Taken When the DTC Sets
The MSM disables the memory recall and easy exit/entry action commands of the motor monitored by the sensor. The motor will respond to
manual positioning commands.
Conditions for Clearing the DTC
* The current DTC will clear and set to history, when the MSM sees the analog input from the sensor as between 0.22-4.75 volts and the
ignition is cycled OFF then back to ACC or RUN.
* A history DTC will clear after 50 consecutive fault-free ignition cycles have occurred.
2010 Cadillac Truck Escalade EXT AWD V8-6.2L Page 1775
2010 Cadillac Truck Escalade EXT AWD V8-6.2L Page 1775
DTC Descriptor
DTC P16F9
- Control Module Shutdown Performance
Circuit/System Description
This diagnostic applies to internal microprocessor integrity conditions within the hybrid powertrain control module (HPCM). The HPCM and each
Motor Control Module (MCM) utilize a programmable logic device (PLD) to perform certain input and output functions. The HPCM monitors the
ability of the PLD to perform these functions.
Conditions for Running the DTC
* The control module runs the program to detect an internal fault when the key is ON.
* Ignition voltage is 8-18V.
Conditions for Setting the DTC
The control module has detected the internal PLD has not turned ON or OFF correctly.
Action Taken When the DTC Sets
* DTC P16F9 is a Type A DTC.
* The HPCM commands the battery energy control module (BECM) to open the high voltage contactor relays.
Conditions for Clearing the DTC
DTC P16F9 is a Type A DTC.
Diagnostic Aids
A low 12V battery condition, an intermittent loss of power, or loss of communication to the drive motor generator power inverter module assembly
(PIM) may set this DTC.
Reference Information
Connector End View Reference
Component Connector End Views (See: Diagrams/Connector Views)
DTC Type Reference
Powertrain Diagnostic Trouble Code (DTC) Type Definitions (See: Diagnostic Trouble Code Descriptions/Powertrain Diagnostic Trouble Code
(DTC) Type Definitions)
Circuit/System Verification
1. Inspect for DTC P0562 or any communication U-code DTCs.
瀚慖f the specified DTCs have set, repair them first. Refer to Diagnostic Trouble Code (DTC) List - Vehicle (See: Diagnostic Trouble Code
Descriptions/Diagnostic Trouble Code (DTC) List - Vehicle).
2. Clear the DTC information.
3. Ignition OFF for 1 minute.
4. Ignition ON.
5. Retest for DTC P16F9.
Circuit/System Testing
1. Inspect for DTC P0562 or any communication DTCs.
瀚慖f the specified DTCs have set, repair them first. Refer to Diagnostic Trouble Code (DTC) List - Vehicle (See: Diagnostic Trouble Code
Descriptions/Diagnostic Trouble Code (DTC) List - Vehicle).
2. Ignition OFF.
3. Wait 2 minutes.
4. Disconnect PIM connector X1.
5. Wait 2 minutes.
6. Reconnect PIM connector X1.
7. Ignition ON, retest for DTC P16F9.
DTC Descriptor
DTC P16F9
- Control Module Shutdown Performance
Circuit/System Description
This diagnostic applies to internal microprocessor integrity conditions within the hybrid powertrain control module (HPCM). The HPCM and each
Motor Control Module (MCM) utilize a programmable logic device (PLD) to perform certain input and output functions. The HPCM monitors the
ability of the PLD to perform these functions.
Conditions for Running the DTC
* The control module runs the program to detect an internal fault when the key is ON.
* Ignition voltage is 8-18V.
Conditions for Setting the DTC
The control module has detected the internal PLD has not turned ON or OFF correctly.
Action Taken When the DTC Sets
* DTC P16F9 is a Type A DTC.
* The HPCM commands the battery energy control module (BECM) to open the high voltage contactor relays.
Conditions for Clearing the DTC
DTC P16F9 is a Type A DTC.
Diagnostic Aids
A low 12V battery condition, an intermittent loss of power, or loss of communication to the drive motor generator power inverter module assembly
(PIM) may set this DTC.
Reference Information
Connector End View Reference
Component Connector End Views (See: Diagrams/Connector Views)
DTC Type Reference
Powertrain Diagnostic Trouble Code (DTC) Type Definitions (See: Diagnostic Trouble Code Descriptions/Powertrain Diagnostic Trouble Code
(DTC) Type Definitions)
Circuit/System Verification
1. Inspect for DTC P0562 or any communication U-code DTCs.
瀚慖f the specified DTCs have set, repair them first. Refer to Diagnostic Trouble Code (DTC) List - Vehicle (See: Diagnostic Trouble Code
Descriptions/Diagnostic Trouble Code (DTC) List - Vehicle).
2. Clear the DTC information.
3. Ignition OFF for 1 minute.
4. Ignition ON.
5. Retest for DTC P16F9.
Circuit/System Testing
1. Inspect for DTC P0562 or any communication DTCs.
瀚慖f the specified DTCs have set, repair them first. Refer to Diagnostic Trouble Code (DTC) List - Vehicle (See: Diagnostic Trouble Code
Descriptions/Diagnostic Trouble Code (DTC) List - Vehicle).
2. Ignition OFF.
3. Wait 2 minutes.
4. Disconnect PIM connector X1.
5. Wait 2 minutes.
6. Reconnect PIM connector X1.
7. Ignition ON, retest for DTC P16F9.
2010 Cadillac Truck Escalade ESV AWD V8-6.2L Page 1750
2010 Cadillac Truck Escalade ESV AWD V8-6.2L Page 1750
P013A P013C, P013E, or P014A
* Before the ECM can report DTC P013A, or P013C failed, DTCs P013E, P014A, P2270, and P2272 must run and pass.
* Before the ECM can report DTC P013E, or P014A failed, DTCs P2270 and P2272 must run and pass.
* DTCs P0030, P0036, P0053, P0054, P0101, P0102, P0103, P0106, P0107, P0108, P0120, P0121, P0122, P0123, P0131, P0132, P0133,
P0134, P0135, P0137, P0138, P013A, P013B, P013E, P013F, P0140, P0141, P0171, P0172, P0201, P0202, P0203, P0204, P0220, P0222,
P0223, P0300, P0442, P0443, P0446, P0449, P0455, P0496, P1133, P1174, P1516, P2101, P2119, P2135, P2176, P2270, P2271, P2A00 are
not set.
* The ignition 1 voltage is between 10-32 V.
* The learned heater resistance is valid.
* The fuel level is greater than 10 %.
* The engine run time is equal to or greater than 5 minutes.
* The accelerator pedal (APP) is steady.
* The torque converter clutch (TCC) is applied.
* The DTCs run once per ignition cycle, during decel fuel cut-off (DFCO), when the above conditions are met.
P013B P013D, P013F, or P014B
* Before the ECM can report DTC P013B, or P013D failed, DTCs P013A, P013C, P013E, P013F, P014A, P014B, P2270, P2271, P2272, and
P2273 must run and pass.
* Before the ECM can report DTC P013F, or P014B failed, DTCs P013A, P013C, P013E, P014A, P2270, P2271, P2272, and P2273 must run
and pass.
* DTCs P0030, P0036, P0053, P0054, P0101, P0102, P0103, P0106, P0107, P0108, P0120, P0121, P0122, P0123, P0131, P0132, P0133,
P0134, P0135, P0137, P0138, P013A, P013B, P013E, P013F, P0140, P0141, P0171, P0172, P0201, P0202, P0203, P0204, P0220, P0222,
P0223, P0300, P0442, P0443, P0446, P0449, P0455, P0496, P1133, P1174, P1516, P2101, P2119, P2135, P2176, P2270, P2271, P2A00 are
not set.
* The ignition 1 voltage is between 10-32 V.
* The learned heater resistance is valid.
* The fuel level is greater than 10 %.
* The engine run time is equal to or greater than 5 minutes.
* The DTCs run once per ignition cycle when the above conditions are met.
Conditions for Setting the DTC
P0133 or P0153
* The ECM detects that the HO2S 1 rich-to-lean or lean-to-rich average response time is greater than a calibrated value.
* The DTCs set within 100 s when the above condition is met.
P013A or P013C
The ECM detects that the accumulated mass air flow monitored during rich-to-lean transitions between 450-150 mV is greater than 75 grams.
P013B or P013D
The ECM detects that the accumulated mass air flow monitored during lean-to-rich transitions between 350-650 mV is greater than 75 grams.
P013E or P014A
The ECM detects that the O2 sensor voltage has not decreased below 450 mV within 42 grams of accumulated air flow.
P013F or P014B
The ECM detects that the O2 sensor voltage has not increased above 350 mV within 200 grams of accumulated air flow.
P1133 or P1153
* The ECM detects that the HO2S 1 rich-to-lean counts, or the lean-to-rich counts are less than a calibrated value.
* The DTCs set within 100 s when the above condition is met.
Action Taken When the DTC Sets
DTCs P0133, P013A, P013B, P013C, P013D, P013E, P013F, P014A, P014B, P0153, P1133, and P1153 are Type B DTCs.
Conditions for Clearing the DTC
DTCs P0133, P013A, P013B, P013C, P013D, P013E, P013F, P014A, P014B, P0153, P1133, and P1153 are Type B DTCs.
Reference Information
Schematic Reference
Engine Controls Schematics (See: Diagrams/Electrical Diagrams/Powertrain Management/System Diagram)
Connector End View Reference
P013A P013C, P013E, or P014A
* Before the ECM can report DTC P013A, or P013C failed, DTCs P013E, P014A, P2270, and P2272 must run and pass.
* Before the ECM can report DTC P013E, or P014A failed, DTCs P2270 and P2272 must run and pass.
* DTCs P0030, P0036, P0053, P0054, P0101, P0102, P0103, P0106, P0107, P0108, P0120, P0121, P0122, P0123, P0131, P0132, P0133,
P0134, P0135, P0137, P0138, P013A, P013B, P013E, P013F, P0140, P0141, P0171, P0172, P0201, P0202, P0203, P0204, P0220, P0222,
P0223, P0300, P0442, P0443, P0446, P0449, P0455, P0496, P1133, P1174, P1516, P2101, P2119, P2135, P2176, P2270, P2271, P2A00 are
not set.
* The ignition 1 voltage is between 10-32 V.
* The learned heater resistance is valid.
* The fuel level is greater than 10 %.
* The engine run time is equal to or greater than 5 minutes.
* The accelerator pedal (APP) is steady.
* The torque converter clutch (TCC) is applied.
* The DTCs run once per ignition cycle, during decel fuel cut-off (DFCO), when the above conditions are met.
P013B P013D, P013F, or P014B
* Before the ECM can report DTC P013B, or P013D failed, DTCs P013A, P013C, P013E, P013F, P014A, P014B, P2270, P2271, P2272, and
P2273 must run and pass.
* Before the ECM can report DTC P013F, or P014B failed, DTCs P013A, P013C, P013E, P014A, P2270, P2271, P2272, and P2273 must run
and pass.
* DTCs P0030, P0036, P0053, P0054, P0101, P0102, P0103, P0106, P0107, P0108, P0120, P0121, P0122, P0123, P0131, P0132, P0133,
P0134, P0135, P0137, P0138, P013A, P013B, P013E, P013F, P0140, P0141, P0171, P0172, P0201, P0202, P0203, P0204, P0220, P0222,
P0223, P0300, P0442, P0443, P0446, P0449, P0455, P0496, P1133, P1174, P1516, P2101, P2119, P2135, P2176, P2270, P2271, P2A00 are
not set.
* The ignition 1 voltage is between 10-32 V.
* The learned heater resistance is valid.
* The fuel level is greater than 10 %.
* The engine run time is equal to or greater than 5 minutes.
* The DTCs run once per ignition cycle when the above conditions are met.
Conditions for Setting the DTC
P0133 or P0153
* The ECM detects that the HO2S 1 rich-to-lean or lean-to-rich average response time is greater than a calibrated value.
* The DTCs set within 100 s when the above condition is met.
P013A or P013C
The ECM detects that the accumulated mass air flow monitored during rich-to-lean transitions between 450-150 mV is greater than 75 grams.
P013B or P013D
The ECM detects that the accumulated mass air flow monitored during lean-to-rich transitions between 350-650 mV is greater than 75 grams.
P013E or P014A
The ECM detects that the O2 sensor voltage has not decreased below 450 mV within 42 grams of accumulated air flow.
P013F or P014B
The ECM detects that the O2 sensor voltage has not increased above 350 mV within 200 grams of accumulated air flow.
P1133 or P1153
* The ECM detects that the HO2S 1 rich-to-lean counts, or the lean-to-rich counts are less than a calibrated value.
* The DTCs set within 100 s when the above condition is met.
Action Taken When the DTC Sets
DTCs P0133, P013A, P013B, P013C, P013D, P013E, P013F, P014A, P014B, P0153, P1133, and P1153 are Type B DTCs.
Conditions for Clearing the DTC
DTCs P0133, P013A, P013B, P013C, P013D, P013E, P013F, P014A, P014B, P0153, P1133, and P1153 are Type B DTCs.
Reference Information
Schematic Reference
Engine Controls Schematics (See: Diagrams/Electrical Diagrams/Powertrain Management/System Diagram)
Connector End View Reference
2010 Cadillac Truck Escalade ESV AWD V8-6.2L Page 583
2010 Cadillac Truck Escalade ESV AWD V8-6.2L Page 583
* Front Seat Adjuster Replacement (with HP2) ()Front Seat Adjuster Replacement (without HP2) ()
* Seat Lumbar Sub System Replacement ()
* Front Seat Recliner Actuator Motor Replacement ()
* Control Module References (See: Testing and Inspection/Programming and Relearning) for MSM replacement, setup, and programming
B2375
DTC B1825, B1850, B1860, B2355, B2365, or B2375
Diagnostic Instructions
* Perform the Diagnostic System Check - Vehicle (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic System
Check - Vehicle) prior to using this diagnostic procedure.
* Review Strategy Based Diagnosis (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Strategy Based Diagnosis) for an
overview of the diagnostic approach.
* Diagnostic Procedure Instructions (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic Procedure
Instructions) provides an overview of each diagnostic category.
DTC Descriptors
DTC B1825 01
- Seat Recline Position Sensor Circuit Short to Battery
DTC B1825 06
- Seat Recline Position Sensor Circuit Short to Ground or Open
DTC B1825 5A
- Seat Recline Position Sensor Circuit Plausibility Failure
DTC B1850 01
- Left Seat Lumbar Horizontal Position Sensor Circuit Short to Battery
DTC B1850 06
- Left Seat Lumbar Horizontal Position Sensor Circuit Short to Ground or Open
DTC B1850 5A
- Left Seat Lumbar Horizontal Position Sensor Circuit Plausibility Failure
DTC B1860 01
- Left Seat Lumbar Vertical Position Sensor Circuit Short to Battery
DTC B1860 06
- Left Seat Lumbar Vertical Position Sensor Circuit Short to Ground or Open
DTC B1860 5A
- Left Seat Lumbar Vertical Position Sensor Circuit Plausibility Failure
DTC B2355 01
- Left Seat Front Vertical Position Sensor Circuit Short to Battery
DTC B2355 06
- Left Seat Front Vertical Position Sensor Circuit Short to Ground or Open
DTC B2355 5A
- Left Seat Front Vertical Position Sensor Circuit Plausibility Failure
DTC B2365 01
- Left Seat Rear Vertical Position Sensor Circuit Short to Battery
DTC B2365 06
- Left Seat Rear Vertical Position Sensor Circuit Short to Ground or Open
DTC B2365 5A
- Left Seat Rear Vertical Position Sensor Circuit Plausibility Failure
DTC B2375 01
- Left Seat Assembly Horizontal Position Sensor Circuit Short to Battery
* Front Seat Adjuster Replacement (with HP2) ()Front Seat Adjuster Replacement (without HP2) ()
* Seat Lumbar Sub System Replacement ()
* Front Seat Recliner Actuator Motor Replacement ()
* Control Module References (See: Testing and Inspection/Programming and Relearning) for MSM replacement, setup, and programming
B2375
DTC B1825, B1850, B1860, B2355, B2365, or B2375
Diagnostic Instructions
* Perform the Diagnostic System Check - Vehicle (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic System
Check - Vehicle) prior to using this diagnostic procedure.
* Review Strategy Based Diagnosis (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Strategy Based Diagnosis) for an
overview of the diagnostic approach.
* Diagnostic Procedure Instructions (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic Procedure
Instructions) provides an overview of each diagnostic category.
DTC Descriptors
DTC B1825 01
- Seat Recline Position Sensor Circuit Short to Battery
DTC B1825 06
- Seat Recline Position Sensor Circuit Short to Ground or Open
DTC B1825 5A
- Seat Recline Position Sensor Circuit Plausibility Failure
DTC B1850 01
- Left Seat Lumbar Horizontal Position Sensor Circuit Short to Battery
DTC B1850 06
- Left Seat Lumbar Horizontal Position Sensor Circuit Short to Ground or Open
DTC B1850 5A
- Left Seat Lumbar Horizontal Position Sensor Circuit Plausibility Failure
DTC B1860 01
- Left Seat Lumbar Vertical Position Sensor Circuit Short to Battery
DTC B1860 06
- Left Seat Lumbar Vertical Position Sensor Circuit Short to Ground or Open
DTC B1860 5A
- Left Seat Lumbar Vertical Position Sensor Circuit Plausibility Failure
DTC B2355 01
- Left Seat Front Vertical Position Sensor Circuit Short to Battery
DTC B2355 06
- Left Seat Front Vertical Position Sensor Circuit Short to Ground or Open
DTC B2355 5A
- Left Seat Front Vertical Position Sensor Circuit Plausibility Failure
DTC B2365 01
- Left Seat Rear Vertical Position Sensor Circuit Short to Battery
DTC B2365 06
- Left Seat Rear Vertical Position Sensor Circuit Short to Ground or Open
DTC B2365 5A
- Left Seat Rear Vertical Position Sensor Circuit Plausibility Failure
DTC B2375 01
- Left Seat Assembly Horizontal Position Sensor Circuit Short to Battery
2010 Cadillac Truck Escalade EXT AWD V8-6.2L Page 1774
2010 Cadillac Truck Escalade EXT AWD V8-6.2L Page 1774
* The transmission control module shifts to a default gear and turns OFF.
Conditions for Clearing the DTC
DTC P16F8 is a Type A DTC
Diagnostic Aids
When attempting to set transmission control module internal DTCs, run the engine for at least 1 minute, and then shut the engine OFF for 30
seconds. Following this procedure will allow for a complete transmission control module shutdown. Program the transmission control module with
the latest software version and retest the DTC to see if the DTC resets.
Reference Information
Schematic Reference
Automatic Transmission Controls Schematics (See: Transmission and Drivetrain/Automatic Transmission/Transaxle/Diagrams)
Connector End View Reference
Component Connector End Views (See: Diagrams/Connector Views)
Electrical Information Reference
* Circuit Testing (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic Procedures/Circuit
Testing/Circuit Testing)
* Connector Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic
Procedures/Connector Repairs/Connector Repairs)
* Testing for Intermittent Conditions and Poor Connections (See: Testing and Inspection/Component Tests and General Diagnostics/General
Electrical Diagnostic Procedures/Circuit Testing/Testing for Intermittent Conditions and Poor Connections)
* Wiring Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic Procedures/Wiring
Repairs/Wiring Repairs)
DTC Type Reference
Powertrain Diagnostic Trouble Code (DTC) Type Definitions (See: Diagnostic Trouble Code Descriptions/Powertrain Diagnostic Trouble Code
(DTC) Type Definitions)
Scan Tool Reference
Control Module References (See: Testing and Inspection/Programming and Relearning) for scan tool information.
Circuit/System Verification
Verify that DTC P16F8 is not set.
If the DTC is set, program the Q8 control solenoid valve assembly. If the DTC resets, replace the Q8 control solenoid valve assembly.
Component Testing
Perform the Control Solenoid Valve and Transmission Control Module Assembly Inspection (See: Transmission and Drivetrain/Automatic
Transmission/Transaxle/Testing and Inspection/Component Tests and General Diagnostics/2ML70 - Automatic Transmission/Control Solenoid
Valve and Transmission Control Module Assembly Inspection).
Repair Instructions
Perform the Diagnostic Repair Verification (See: Verification Tests) after completing the diagnostic procedure.
Control Module References (See: Testing and Inspection/Programming and Relearning) for Q8 control solenoid valve assembly for replacement,
setup, and programming.
P16F9
DTC P16F9
Diagnostic Instructions
* Perform the Diagnostic System Check - Vehicle (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic System
Check - Vehicle) prior to using this diagnostic procedure.
* Review Strategy Based Diagnosis (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Strategy Based Diagnosis) for an
overview of the diagnostic approach.
* Diagnostic Procedure Instructions (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic Procedure
Instructions) provides an overview of each diagnostic category.
* The transmission control module shifts to a default gear and turns OFF.
Conditions for Clearing the DTC
DTC P16F8 is a Type A DTC
Diagnostic Aids
When attempting to set transmission control module internal DTCs, run the engine for at least 1 minute, and then shut the engine OFF for 30
seconds. Following this procedure will allow for a complete transmission control module shutdown. Program the transmission control module with
the latest software version and retest the DTC to see if the DTC resets.
Reference Information
Schematic Reference
Automatic Transmission Controls Schematics (See: Transmission and Drivetrain/Automatic Transmission/Transaxle/Diagrams)
Connector End View Reference
Component Connector End Views (See: Diagrams/Connector Views)
Electrical Information Reference
* Circuit Testing (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic Procedures/Circuit
Testing/Circuit Testing)
* Connector Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic
Procedures/Connector Repairs/Connector Repairs)
* Testing for Intermittent Conditions and Poor Connections (See: Testing and Inspection/Component Tests and General Diagnostics/General
Electrical Diagnostic Procedures/Circuit Testing/Testing for Intermittent Conditions and Poor Connections)
* Wiring Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic Procedures/Wiring
Repairs/Wiring Repairs)
DTC Type Reference
Powertrain Diagnostic Trouble Code (DTC) Type Definitions (See: Diagnostic Trouble Code Descriptions/Powertrain Diagnostic Trouble Code
(DTC) Type Definitions)
Scan Tool Reference
Control Module References (See: Testing and Inspection/Programming and Relearning) for scan tool information.
Circuit/System Verification
Verify that DTC P16F8 is not set.
If the DTC is set, program the Q8 control solenoid valve assembly. If the DTC resets, replace the Q8 control solenoid valve assembly.
Component Testing
Perform the Control Solenoid Valve and Transmission Control Module Assembly Inspection (See: Transmission and Drivetrain/Automatic
Transmission/Transaxle/Testing and Inspection/Component Tests and General Diagnostics/2ML70 - Automatic Transmission/Control Solenoid
Valve and Transmission Control Module Assembly Inspection).
Repair Instructions
Perform the Diagnostic Repair Verification (See: Verification Tests) after completing the diagnostic procedure.
Control Module References (See: Testing and Inspection/Programming and Relearning) for Q8 control solenoid valve assembly for replacement,
setup, and programming.
P16F9
DTC P16F9
Diagnostic Instructions
* Perform the Diagnostic System Check - Vehicle (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic System
Check - Vehicle) prior to using this diagnostic procedure.
* Review Strategy Based Diagnosis (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Strategy Based Diagnosis) for an
overview of the diagnostic approach.
* Diagnostic Procedure Instructions (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic Procedure
Instructions) provides an overview of each diagnostic category.
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