2010 Cadillac Truck SRX FWD V6-3.0L Page 1309

2010 Cadillac Truck SRX FWD V6-3.0L Page 1309

瀚慖f less than specified range, test the signal circuit for a short to ground, or an open/high resistance. If the circuit tests normal, replace the

K20 ECM.

瀚慖f greater than specified range, test the signal circuit for a short to voltage. If the circuit tests normal, replace the K20 ECM.

6. Install a 3 A fused jumper wire between TP sensor 1 signal circuit terminal D and the 5 V reference circuit terminal E. Verify the scan tool

TP sensor 1 voltage parameter 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 K20 ECM.

7. If all circuits test normal, test or replace the Q38 throttle body assembly.

Repair Instructions

Perform the Diagnostic Repair Verification (See: Verification Tests) after completing the repair.

* Throttle Body Assembly Replacement (LF1) (See: Powertrain Management/Fuel Delivery and Air Induction/Throttle Body/Service and

Repair/Removal and Replacement)Throttle Body Assembly Replacement (LAU) (See: Powertrain Management/Fuel Delivery and Air

Induction/Throttle Body/Service and Repair/Removal and Replacement)

* Control Module References (See: Testing and Inspection/Programming and Relearning) for ECM replacement, programming, and setup

P228C

DTC P0089, P00C6, P228C, or P228D (LF1, LFW)

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 P0089

- Fuel Pressure Regulator Performance

DTC P00C6

- Fuel Rail Pressure Low During Engine Cranking

DTC P228C

- Fuel Pressure Regulator 1 Control Performance - Low Pressure

DTC P228D

- Fuel Pressure Regulator 1 Control Performance - High Pressure

Circuit/System Description

The fuel rail pressure sensor detects fuel pressure within the fuel rail. The engine control module (ECM) provides a 5 V reference voltage on the 5

V reference circuit and ground on the low reference circuit. The ECM receives a varying signal voltage on the signal circuit.

High pressure fuel is regulated by the high pressure fuel pump actuator, which is a part of the high pressure fuel pump. The high pressure fuel pump

actuator is a solenoid valve. The ECM provides a voltage on the actuator high control circuit and ground on the actuator low control circuit. Both

circuits are controlled through output drivers within the ECM. When deactivated, both drivers are disabled. When activated, the high control circuit

driver energizes the high pressure fuel pump actuator and the low control circuit driver pulse-width modulates (PWM) the low control circuit to

ground.

The high pressure mechanical fuel pump is driven by three lobes on the camshaft. The ECM uses the camshaft and crankshaft position sensor inputs

to synchronize the high pressure fuel pump actuator with the position of each of the camshaft lobes. The ECM regulates fuel pressure by adjusting

the portion of each pump stroke that provides fuel to the rail.

The ECM monitors the fuel rail fuel pressure sensor and the high pressure fuel pump actuator to determine if the commanded and actual pressure

are within a predetermined range, or if the amount of fuel pressure correction exceeds a calibrated pressure.

Conditions for Running the DTC

P0089, P228C, or P228D

2010 Cadillac Truck SRX FWD V6-3.0L Page 1081

2010 Cadillac Truck SRX FWD V6-3.0L Page 1081

瀚慖f not the specified value, test the control circuit and the ignition voltage circuit for high resistance. If the circuits test normal, replace the

K20 ECM.

7. If all circuits 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 (LF1) (See: Powertrain Management/Computers and Control Systems/Oxygen

Sensor/Service and Repair/Heated Oxygen Sensor Replacement - Bank 1 Sensor 1)

* Heated Oxygen Sensor Replacement - Bank 1 Sensor 2 (LF1) (See: Powertrain Management/Computers and Control Systems/Oxygen

Sensor/Service and Repair/Heated Oxygen Sensor Replacement - Bank 1 Sensor 2)

* Heated Oxygen Sensor Replacement - Bank 2 Sensor 1 (LF1) (See: Powertrain Management/Computers and Control Systems/Oxygen

Sensor/Service and Repair/Heated Oxygen Sensor Replacement - Bank 2 Sensor 1)

* Heated Oxygen Sensor Replacement - Bank 2 Sensor 2 (LF1) (See: Powertrain Management/Computers and Control Systems/Oxygen

Sensor/Service and Repair/Heated Oxygen Sensor Replacement - Bank 2 Sensor 2)

* Control Module References (See: Testing and Inspection/Programming and Relearning) for ECM replacement, setup, and programming

P0060

DTC P0030, P0036, P0050, P0053, P0054, P0056, P0059, P0060, P0135, P0141, P0155, or P0161 (LF1)

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 P0030

- HO2S Heater Control Circuit Bank 1 Sensor 1

DTC P0036

- HO2S Heater Control Circuit Bank 1 Sensor 2

DTC P0050

- HO2S Heater Control Circuit Bank 2 Sensor 1

DTC P0053

- HO2S Heater Resistance Bank 1 Sensor 1

DTC P0054

- HO2S Heater Resistance Bank 1 Sensor 2

DTC P0056

- HO2S Heater Control Circuit Bank 2 Sensor 2

DTC P0059

- HO2S Heater Resistance Bank 2 Sensor 1

DTC P0060

- HO2S Heater Resistance Bank 2 Sensor 2

DTC P0135

- HO2S Heater Performance Bank 1 Sensor 1

DTC P0141

- HO2S Heater Performance Bank 1 Sensor 2

DTC P0155

- HO2S Heater Performance Bank 2 Sensor 1

2010 Cadillac Truck Escalade/ESV RWD V8-6.2L Page 2991

2010 Cadillac Truck Escalade/ESV RWD V8-6.2L Page 2991

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

3900 kg (8600 lb) GVW

* Control Module References (See: Testing and Inspection/Programming and Relearning) for module replacement, setup, and programming

U2156

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.

2010 Cadillac CTS Sedan AWD V6-3.6L Page 837

2010 Cadillac CTS Sedan AWD V6-3.6L Page 837

瀚慖f less than the specified range, test the circuits for a short to ground or an open/high resistance. If the circuits test normal, replace the

K20 ECM.

瀚慖f greater than the specified range, test the circuits for a short to voltage. If the circuits test normal, replace the K20 ECM.

4. If the circuits test normal, replace the appropriate B68 knock sensor.

P06B6 and P06B7

* Verify that the following DTCs are not set: DTC P0325, P0327, P0328, P0330, P0332 and P0333.

瀚慖f any of the DTCs are set, diagnose them first.

* DTCs P06B6 and P06B7 indicate an internal ECM circuitry failure. Replace the K20 ECM if no external knock sensor circuit issues exist.

Component Testing

1. Connect the DMM between the B68 knock sensor signal circuit terminal A and the B68 knock sensor signal circuit terminal B on the sensor

side of the appropriate B68 knock sensor harness connector.

2. Set the DMM to the 400 mV AC hertz scale and wait for the DMM to stabilize at 0 Hz.

Note: DO NOT tap on plastic engine components.

3. Tap on the engine block with a non-metallic object near the B68 knock sensor while observing the signal indicated on the DMM.

4. The DMM should display a fluctuating frequency while tapping on the engine block.

Repair Instructions

Perform the Diagnostic Repair Verification (See: Verification Tests) after completing the diagnostic procedure.

* Knock Sensor Replacement - Bank 1 (See: Powertrain Management/Computers and Control Systems/Knock Sensor/Service and

Repair/Knock Sensor Replacement - Bank 1)

* Knock Sensor Replacement - Bank 2 (See: Powertrain Management/Computers and Control Systems/Knock Sensor/Service and

Repair/Knock Sensor Replacement - Bank 2)

* Control Module References (See: Testing and Inspection/Programming and Relearning) for ECM replacement, setup, and programming

P0008

DTC P0008 or P0009

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 P0008

- Engine Position System Performance Bank 1

DTC P0009

- Engine Position System Performance Bank 2

Circuit/System Description

The engine control module (ECM) tests for a misalignment between both camshafts on one bank of the engine and the crankshaft. The

misalignment would be at an idler sprocket for either bank or at the crankshaft. Once the ECM learns the position of both camshafts on one bank of

the engine, the ECM compares the learned values to a reference value. The ECM will set a DTC if both learned values for one bank of the engine

are exceeding a calibrated threshold in the same direction.

Conditions for Running the DTC

* DTC P0010, P0011, P0013, P0014, P0020, P0021, P0023, P0024, P0341, P0342, P0343, P0346, P0347, P0348, P0366, P0367, P0368,

P0391, P0392, P0393, P2088, P2089, P2090, P2091, P2092, P2093, P2094, or P2095 is not set.

* The engine is operating for greater than 50 seconds.

* The engine coolant temperature is between 0-95掳C (32-203掳F).

2010 Cadillac Truck Escalade/ESV RWD V8-6.2L Page 2934

2010 Cadillac Truck Escalade/ESV RWD V8-6.2L Page 2934

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

3900 kg (8600 lb) GVW

* Control Module References (See: Testing and Inspection/Programming and Relearning) for module replacement, setup, and programming

U2128

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.

2010 Cadillac Truck Escalade/ESV RWD V8-6.2L Page 2604

2010 Cadillac Truck Escalade/ESV RWD V8-6.2L Page 2604

瀚慖f not the specified value, test the appropriate control circuit listed below for a short to voltage. If the circuit tests normal, replace the

ECM.

* Cylinder deactivation solenoid valve 1 terminal C

* Cylinder deactivation solenoid valve 2 terminal A

* Cylinder deactivation solenoid valve 3 terminal B

* Cylinder deactivation solenoid valve 4 terminal D

7. Install a 3 A fused jumper wire between the appropriate control circuit terminal listed below and the ignition circuit terminal E. Command the

appropriate cylinder deactivation solenoid ON with a scan tool. Verify the scan tool Cylinder Deactivation Solenoid Valve Control Circuit

High Voltage Test Status parameter displays Malfunction.

* Cylinder deactivation solenoid valve 1 terminal C

* Cylinder deactivation solenoid valve 2 terminal A

* Cylinder deactivation solenoid valve 3 terminal B

* Cylinder deactivation solenoid valve 4 terminal D

瀚慖f not the specified value, test the control circuit for an open/high resistance. If the circuit tests normal, replace the ECM.

8. If all the circuits test normal, test or replace the valve lifter oil manifold assembly.

Component Testing

Static Test

1. Ignition OFF, disconnect the harness connector at the valve lifter oil manifold assembly.

2. Connect the harness that is labeled resistance from the displacement on demand (DOD) tester to the valve lifter oil manifold connector.

3. Connect the power leads from the DOD tester to B+ and ground. Test for 11-18 ohm on each valve lifter oil manifold solenoid.

瀚慖f not within the specified range for each solenoid, replace the valve lifter oil manifold assembly.

4. Test for infinite resistance between each valve lifter oil manifold circuit terminal and the valve lifter oil manifold housing.

瀚慖f less than infinite resistance, replace the valve lifter oil manifold assembly.

Dynamic Test

1. Ignition OFF, disconnect the harness connector at the valve lifter oil manifold assembly.

2. Connect the cable that is labeled power from the displacement on demand DOD tester to the connector.

3. Connect the power leads from the DOD tester to B+ and ground.

4. Command each valve lifter oil manifold solenoid ON and OFF using the DOD tester. You should be able to hear each solenoid turn ON and

OFF.

瀚慖f the function does not perform as specified, replace the valve lifter oil manifold assembly.

Repair Instructions

Perform the Diagnostic Repair Verification (See: Verification Tests) after completing the diagnostic procedure.

* Valve Lifter Oil Manifold Replacement (See: Engine, Cooling and Exhaust/Engine/Camshaft, Lifters and Push Rods/Lifter / Lash

Adjuster/Service and Repair/Valve Lifter Oil Manifold Replacement)

* Control Module References (See: Testing and Inspection/Programming and Relearning) for ECM replacement, setup, and programming

P3425

DTC P3401, P3425, P3441, or P3449

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 P3401

- Cylinder 1 Deactivation Solenoid Control Circuit

2010 Cadillac CTS Sedan AWD V6-3.6L Page 1070

2010 Cadillac CTS Sedan AWD V6-3.6L Page 1070

瀚慖f less than the specified range, test the signal circuit terminal B for a short to ground. If the circuit/connections test normal, replace the

ECM.

瀚慖f greater than the specified range, test the signal circuit terminal B for a short to voltage. If the circuit/connections test normal, replace

the ECM.

6. Connect a 3 A fused jumper wire between the signal circuit terminal B and ground. Verify the scan tool HO2S voltage parameter is less than

60 mV.

瀚慖f greater than the specified range, test the signal circuit for an open/high resistance. If the circuit/connections test normal, replace the

ECM.

7. Connect a 3 A fused jumper wire between the signal circuit terminal B and the low reference circuit terminal A. Verify the scan tool HO2S

voltage parameter is less than 60 mV.

瀚慖f greater than the specified range, test the low reference circuit for an open/high resistance or for a short to voltage. If the

circuit/connections test normal, replace the ECM.

8. Verify that none of the following conditions exist:

* The HO2S is loose

* Lean or rich condition.

* Water intrusion in the HO2S harness connector

* Low or high fuel system pressure-Refer to Fuel System Diagnosis (See: Powertrain Management/Computers and Control

Systems/Testing and Inspection/Component Tests and General Diagnostics/Fuel System Diagnosis).

* Fuel that is contaminated-Refer to Alcohol/Contaminants-in-Fuel Diagnosis (with Special Tool) (See: Powertrain

Management/Computers and Control Systems/Testing and Inspection/Component Tests and General

Diagnostics/Alcohol/Contaminants-in-Fuel Diagnosis (with Special Tool))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)).

* Fuel saturation of the evaporative emission (EVAP) canister

* Exhaust leaks near the HO2S

* Engine vacuum leaks

瀚慖f you find any of the above conditions, repair as necessary.

9. If all circuits/connections test normal, replace the appropriate HO2S.

Repair Instructions

Perform the Diagnostic Repair Verification (See: Verification Tests) after completing the diagnostic procedure.

* Heated Oxygen Sensor Replacement - Bank 1 Sensor 1 (LF1) (See: Powertrain Management/Computers and Control Systems/Oxygen

Sensor/Service and Repair)Heated Oxygen Sensor Replacement - Bank 1 Sensor 1 (LLT) (See: Powertrain Management/Computers and

Control Systems/Oxygen Sensor/Service and Repair)

* Heated Oxygen Sensor Replacement - Bank 2 Sensor 1 (LF1) (See: Powertrain Management/Computers and Control Systems/Oxygen

Sensor/Service and Repair)Heated Oxygen Sensor Replacement - Bank 2 Sensor 1 (LLT) (See: Powertrain Management/Computers and

Control Systems/Oxygen Sensor/Service and Repair)

* Control Module References (See: Testing and Inspection/Programming and Relearning) for engine control module replacement, setup, and

programming

P0135

DTC P0135, P0141, P0155, or P0161

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 P0135

- HO2S Heater Performance Bank 1 Sensor 1

2010 Cadillac Truck SRX AWD V6-3.0L Page 107

2010 Cadillac Truck SRX AWD V6-3.0L Page 107

瀚慖f greater than the specified range, test both control circuits terminals for an open/high resistance. If the circuits test normal, replace the

K36 SDM.

7. If all circuits test normal, replace the F105, F106 air bag or F112 seat belt retractor pretensioner.

DTC B0019-B0020

1. Ignition OFF, disconnect harness connector X206.

2. Disconnect the scan tool.

3. Wait 120 seconds, test for greater than 25 ohm between the control circuit terminals listed below on the SDM side of the connector:

* F105 Passenger instrument panel air bag stage 1 X206 terminal 1 and 2

* F105 Passenger instrument panel air bag stage 2 X206 terminal 4 and 5

瀚慖f less than the specified range, test for a short between the control circuits, check each connector and CPA to ensure that the shorting

bars are lifted. If the circuits and shorting bars tests normal, replace the K36 SDM.

4. Ignition ON, test for less than 11 V between the control circuit terminals listed below and ground:

* X206 control circuit terminal 1

* X206 control circuit terminal 2

* X206 control circuit terminal 4

* X206 control circuit terminal 5

瀚慖f greater than the specified range, test the control circuit for a short to voltage. If the circuit tests normal, replace the K36 SDM.

5. Ignition OFF, test for greater than 25 ohm between the control circuit terminals listed below and ground:

* X206 control circuit terminal 1

* X206 control circuit terminal 2

* X206 control circuit terminal 4

* X206 control circuit terminal 5

瀚慖f less than the specified range, test the control circuit for a short to ground. If the circuit tests normal, replace the K36 SDM.

6. Install a 3 A fused jumper wire between the control circuit terminals listed below:

* F105 Passenger instrument panel air bag stage 1 X206 terminal 1 and 2

* F105 Passenger instrument panel air bag stage 2 X206 terminal 4 and 5

7. Verify the scan tool Deployment Loop Resistance parameter is less than 2 ohm.

瀚慖f greater than the specified range, test both control circuits terminals for an open/high resistance. If the circuits test normal, replace the

K36 SDM.

8. If all circuits test normal, replace the F105 passenger instrument panel air bag.

Repair Instructions

Perform the Diagnostic Repair Verification (See: Verification Tests) after completing the diagnostic procedure.

* Driver or Passenger Seat Side Inflatable Restraint Module Replacement (See: Restraints and Safety Systems/Air Bag Systems/Air

Bag/Service and Repair/Removal and Replacement/Driver or Passenger Seat Side Inflatable Restraint Module Replacement)

* Seat Belt Retractor Pretensioner Replacement - Front (See: Restraints and Safety Systems/Seat Belt Systems/Seat Belt Tensioner/Service

and Repair/Removal and Replacement/Seat Belt Retractor Pretensioner Replacement - Front)

* Instrument Panel Inflatable Restraint Module Replacement (See: Restraints and Safety Systems/Air Bag Systems/Air Bag/Service and

Repair/Removal and Replacement/Instrument Panel Inflatable Restraint Module Replacement)

* Roof Side Rail Inflatable Restraint Module Replacement (See: Restraints and Safety Systems/Air Bag Systems/Air Bag/Service and

Repair/Removal and Replacement/Roof Side Rail Inflatable Restraint Module Replacement)

* SIR/SRS Wiring Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic

Procedures/Wiring Repairs/SIR/SRS Wiring Repairs)

* Control Module References (See: Testing and Inspection/Programming and Relearning) for SDM replacement, setup, and programming

B0020

DTC B0014-B0045

Diagnostic Instructions

* Perform the Diagnostic System Check - Vehicle (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic System

2010 Cadillac Truck Escalade/ESV RWD V8-6.2L Page 2138

2010 Cadillac Truck Escalade/ESV RWD V8-6.2L Page 2138

瀚慖f less than the specified value, test the circuit for a short to ground or an open/high resistance. If the circuit tests normal, replace the

BCM.

3. Test for B+ between the B+ circuit terminal 1 and the signal circuit terminal 3.

瀚慖f less than the specified value, test the signal circuit for a short to voltage or an open/high resistance. If the circuit tests normal, replace

the BCM.

4. Ignition OFF, disconnect the X1 harness connector at the BCM.

5. Test for infinite resistance between the signal circuit terminal 3 and ground.

瀚慖f less than the specified value, test the signal circuit for a short to ground.

6. If all circuits test normal, test or replace the steering wheel control switch - left.

Component Testing

Steering Wheel Control Switch - Left

1. Disconnect the harness connector at the steering wheel controls switch - left.

2. Cruise control switch ON, measure the resistance between terminal 1 and terminal 3 while individually activating and holding each cruise

control function switch and compare the resistance reading to the values in the table below.

瀚慖f not within the specified resistance range, replace the steering wheel controls switch - left.

Repair Instructions

Perform the Diagnostic Repair Verification (See: Verification Tests) after completing the diagnostic procedure.

* Steering Wheel Control Switch Assembly Replacement (See: Accessories and Optional Equipment/Sensors and Switches - Accessories and

Optional Equipment/Steering Mounted Controls Assembly/Service and Repair)

* Control Module References (See: Testing and Inspection/Programming and Relearning) for BCM replacement, setup and programming

P0568

DTC P0564, P0567, or P0568

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 P0564

- Cruise Control Multifunction Switch Circuit

DTC P0567

- Cruise Control Resume Switch Circuit

DTC P0568

- Cruise Control Set Switch Circuit

Diagnostic Fault Information

2010 Cadillac Truck Escalade/ESV RWD V8-6.2L Page 2097

2010 Cadillac Truck Escalade/ESV RWD V8-6.2L Page 2097

瀚慖f less than the specified range, test the appropriate relay coil control circuit for a short to ground. If the circuit tests normal, replace the

K20 ECM.

4. Command the appropriate cooling fan relay ON and OFF with a scan tool. The DMM should transition from OL when commanded OFF to

less than 1 V when commanded ON.

瀚慖f the circuit voltage does not correspond to the specified values, test the control circuit for an open/high resistance or for a short to

voltage. If the circuit tests normal, replace the K20 ECM.

5. If all circuits test normal, test or replace the appropriate KR20 relay.

Component Testing

1. Ignition OFF, disconnect the KR20 cooling fan relay.

2. Test for 70-110 ohm between terminals 85 and 86.

瀚慖f not within the specified range, replace the KR20 cooling fan relay.

3. Measure the resistance between the terminals listed below:

* 30 and 86

* 30 and 87

* 30 and 85

* 85 and 87

The DMM should display OL.

瀚慖f less than the specified range, replace the KR20 cooling fan relay.

4. Test the KR20 Fan Control Relay for less than 2 ohm between terminals 30 and 87A.

瀚慖f greater than the specified range, replace the fan control relay.

5. Connect a 20 A fused jumper wire between relay terminal 85 and B+. Connect a jumper wire between relay terminal 86 and ground. Test for

less than 2 ohm between terminals 30 and 87.

瀚慖f greater than the specified range, replace the KR20 cooling fan relay.

Repair Instructions

Perform the Diagnostic Repair Verification (See: Verification Tests) after completing the diagnostic procedure.

* Relay Replacement (Attached to Wire Harness) (See: Power and Ground Distribution/Power Distribution Relay/Service and Repair/Relay

Replacement (Attached to Wire Harness))Relay Replacement (Within an Electrical Center) (See: Power and Ground Distribution/Power

Distribution Relay/Service and Repair/Relay Replacement (Within an Electrical Center))

* Underhood Electrical Center or Junction Block Replacement (See: Maintenance/Fuses and Circuit Breakers/Fuse Block/Service and

Repair/Removal and Replacement/Underhood Electrical Center or Junction Block Replacement)

* Engine Coolant Fan Replacement (HP2) (See: Engine, Cooling and Exhaust/Cooling System/Radiator Cooling Fan/Service and

Repair/Engine Coolant Fan Replacement)Engine Coolant Fan Replacement (Non-HP2) (See: Engine, Cooling and Exhaust/Cooling

System/Radiator Cooling Fan/Service and Repair/Engine Coolant Fan Replacement)

* Control Module References (See: Testing and Inspection/Programming and Relearning)for ECM replacement, setup, and programming

P0482

DTC P0480, P0481, or P0482 (with HP2)

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 P0480

- Cooling Fan Relay 1 Control Circuit

2010 Cadillac Truck SRX AWD V6-3.0L Page 74

2010 Cadillac Truck SRX AWD V6-3.0L Page 74

瀚慖f greater than the specified range, test both control circuits terminals for an open/high resistance. If the circuits test normal, replace the

K36 SDM.

7. If all circuits test normal, replace the F105, F106 air bag or F112 seat belt retractor pretensioner.

DTC B0019-B0020

1. Ignition OFF, disconnect harness connector X206.

2. Disconnect the scan tool.

3. Wait 120 seconds, test for greater than 25 ohm between the control circuit terminals listed below on the SDM side of the connector:

* F105 Passenger instrument panel air bag stage 1 X206 terminal 1 and 2

* F105 Passenger instrument panel air bag stage 2 X206 terminal 4 and 5

瀚慖f less than the specified range, test for a short between the control circuits, check each connector and CPA to ensure that the shorting

bars are lifted. If the circuits and shorting bars tests normal, replace the K36 SDM.

4. Ignition ON, test for less than 11 V between the control circuit terminals listed below and ground:

* X206 control circuit terminal 1

* X206 control circuit terminal 2

* X206 control circuit terminal 4

* X206 control circuit terminal 5

瀚慖f greater than the specified range, test the control circuit for a short to voltage. If the circuit tests normal, replace the K36 SDM.

5. Ignition OFF, test for greater than 25 ohm between the control circuit terminals listed below and ground:

* X206 control circuit terminal 1

* X206 control circuit terminal 2

* X206 control circuit terminal 4

* X206 control circuit terminal 5

瀚慖f less than the specified range, test the control circuit for a short to ground. If the circuit tests normal, replace the K36 SDM.

6. Install a 3 A fused jumper wire between the control circuit terminals listed below:

* F105 Passenger instrument panel air bag stage 1 X206 terminal 1 and 2

* F105 Passenger instrument panel air bag stage 2 X206 terminal 4 and 5

7. Verify the scan tool Deployment Loop Resistance parameter is less than 2 ohm.

瀚慖f greater than the specified range, test both control circuits terminals for an open/high resistance. If the circuits test normal, replace the

K36 SDM.

8. If all circuits test normal, replace the F105 passenger instrument panel air bag.

Repair Instructions

Perform the Diagnostic Repair Verification (See: Verification Tests) after completing the diagnostic procedure.

* Driver or Passenger Seat Side Inflatable Restraint Module Replacement (See: Restraints and Safety Systems/Air Bag Systems/Air

Bag/Service and Repair/Removal and Replacement/Driver or Passenger Seat Side Inflatable Restraint Module Replacement)

* Seat Belt Retractor Pretensioner Replacement - Front (See: Restraints and Safety Systems/Seat Belt Systems/Seat Belt Tensioner/Service

and Repair/Removal and Replacement/Seat Belt Retractor Pretensioner Replacement - Front)

* Instrument Panel Inflatable Restraint Module Replacement (See: Restraints and Safety Systems/Air Bag Systems/Air Bag/Service and

Repair/Removal and Replacement/Instrument Panel Inflatable Restraint Module Replacement)

* Roof Side Rail Inflatable Restraint Module Replacement (See: Restraints and Safety Systems/Air Bag Systems/Air Bag/Service and

Repair/Removal and Replacement/Roof Side Rail Inflatable Restraint Module Replacement)

* SIR/SRS Wiring Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic

Procedures/Wiring Repairs/SIR/SRS Wiring Repairs)

* Control Module References (See: Testing and Inspection/Programming and Relearning) for SDM replacement, setup, and programming

B0015

DTC B0014-B0045

Diagnostic Instructions

* Perform the Diagnostic System Check - Vehicle (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic System

2010 Cadillac Truck Escalade/ESV RWD V8-6.2L Page 1595

2010 Cadillac Truck Escalade/ESV RWD V8-6.2L Page 1595

Important: DTCs P1B05 and P1B06 should always pass and fail together. If one DTC has passed while one has failed, replace the

drive motor generator power inverter control module (PIM).

1. Ignition OFF, wait 2 minutes.

Important: The drive motor generator control module sight shield must be installed during all testing in order to complete the HVIC

current loop.

2. Disconnect PIM connector X1.

3. Install a 3 A fused jumper wire between the HVIC return circuit terminal 1 and the HVIC source circuit terminal 23.

4. Ignition ON, observe the BECM HVIC Source Current parameter.

瀚慖f the HVIC Source Current parameter indicates current between 5-18 mA, test for proper PIM connector X1 terminal contact at terminal

1 and terminal 23. If the terminal contact tests normal, replace the PIM.

5. Remove the PIM terminal 1 to terminal 23 fused jumper wire.

6. Test for 5-18 mA with a DMM between the HVIC Source circuit terminal 23 and ground.

瀚慖f within the specified range, test the HVIC Return circuit for an open between PIM connector X1 and X350.

Danger: Always perform the High Voltage Disabling procedure prior to servicing any High Voltage component or connection. Personal

Protection Equipment (PPE) and proper procedures must be followed.

The High Voltage Disabling procedure will perform the following tasks:

* Identify how to disable high voltage.

* Identify how to test for the presence of high voltage.

* Identify condition under which high voltage is always present and personal protection equipment (PPE) and proper procedures

must be followed.

Failure to follow the procedures exactly as written may result in serious injury or death.

瀚慖f the circuit tests normal, perform the High Voltage Disabling () procedure and test the HVIC Return circuit for an open between X350

and BECM connector X1. If the circuit tests normal, replace the BECM.

瀚慖f less than the specified range, test the HVIC Source circuit for an open between PIM connector X1 and X350.

Danger: Always perform the High Voltage Disabling procedure prior to servicing any High Voltage component or connection. Personal

Protection Equipment (PPE) and proper procedures must be followed.

The High Voltage Disabling procedure will perform the following tasks:

* Identify how to disable high voltage.

* Identify how to test for the presence of high voltage.

* Identify condition under which high voltage is always present and personal protection equipment (PPE) and proper procedures

must be followed.

Failure to follow the procedures exactly as written may result in serious injury or death.

Important: Removal of the HV manual disconnect lever also opens the HVIC source circuit between X350 and BECM connector X1.

瀚慖f the circuit tests normal, perform the High Voltage Disabling () procedure and test the HVIC Source circuit for an open between X350

and BECM connector X1. If the circuit tests normal, replace the BECM.

P1AE3 with or without P1B05 and P1B06

Important: DTCs P1B05 and P1B06 should always pass and fail together. If one DTC has passed while one has failed, replace the

drive motor generator power inverter control module (PIM).

1. Ignition OFF, wait 2 minutes.

Important: The drive motor generator control module sight shield must be installed during all testing in order to complete the HVIC

current loop.

2. Disconnect PIM connector X1.

3. Ignition ON, observe the BECM HVIC Source Current parameter. The parameter should display less than 5 mA.

瀚慖f the HVIC Source Current parameter indicates current between 5-18 mA test the HVIC Source circuit for a short to ground between

2010 Cadillac Truck SRX AWD V6-3.0L Page 1081

2010 Cadillac Truck SRX AWD V6-3.0L Page 1081

瀚慖f not the specified value, test the control circuit and the ignition voltage circuit for high resistance. If the circuits test normal, replace the

K20 ECM.

7. If all circuits 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 (LF1) (See: Powertrain Management/Computers and Control Systems/Oxygen

Sensor/Service and Repair/Heated Oxygen Sensor Replacement - Bank 1 Sensor 1)

* Heated Oxygen Sensor Replacement - Bank 1 Sensor 2 (LF1) (See: Powertrain Management/Computers and Control Systems/Oxygen

Sensor/Service and Repair/Heated Oxygen Sensor Replacement - Bank 1 Sensor 2)

* Heated Oxygen Sensor Replacement - Bank 2 Sensor 1 (LF1) (See: Powertrain Management/Computers and Control Systems/Oxygen

Sensor/Service and Repair/Heated Oxygen Sensor Replacement - Bank 2 Sensor 1)

* Heated Oxygen Sensor Replacement - Bank 2 Sensor 2 (LF1) (See: Powertrain Management/Computers and Control Systems/Oxygen

Sensor/Service and Repair/Heated Oxygen Sensor Replacement - Bank 2 Sensor 2)

* Control Module References (See: Testing and Inspection/Programming and Relearning) for ECM replacement, setup, and programming

P0060

DTC P0030, P0036, P0050, P0053, P0054, P0056, P0059, P0060, P0135, P0141, P0155, or P0161 (LF1)

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 P0030

- HO2S Heater Control Circuit Bank 1 Sensor 1

DTC P0036

- HO2S Heater Control Circuit Bank 1 Sensor 2

DTC P0050

- HO2S Heater Control Circuit Bank 2 Sensor 1

DTC P0053

- HO2S Heater Resistance Bank 1 Sensor 1

DTC P0054

- HO2S Heater Resistance Bank 1 Sensor 2

DTC P0056

- HO2S Heater Control Circuit Bank 2 Sensor 2

DTC P0059

- HO2S Heater Resistance Bank 2 Sensor 1

DTC P0060

- HO2S Heater Resistance Bank 2 Sensor 2

DTC P0135

- HO2S Heater Performance Bank 1 Sensor 1

DTC P0141

- HO2S Heater Performance Bank 1 Sensor 2

DTC P0155

- HO2S Heater Performance Bank 2 Sensor 1

2010 Cadillac Truck SRX AWD V6-3.0L Page 119

2010 Cadillac Truck SRX AWD V6-3.0L Page 119

瀚慖f greater than the specified range, test both control circuits terminals for an open/high resistance. If the circuits test normal, replace the

K36 SDM.

7. If all circuits test normal, replace the F105, F106 air bag or F112 seat belt retractor pretensioner.

DTC B0019-B0020

1. Ignition OFF, disconnect harness connector X206.

2. Disconnect the scan tool.

3. Wait 120 seconds, test for greater than 25 ohm between the control circuit terminals listed below on the SDM side of the connector:

* F105 Passenger instrument panel air bag stage 1 X206 terminal 1 and 2

* F105 Passenger instrument panel air bag stage 2 X206 terminal 4 and 5

瀚慖f less than the specified range, test for a short between the control circuits, check each connector and CPA to ensure that the shorting

bars are lifted. If the circuits and shorting bars tests normal, replace the K36 SDM.

4. Ignition ON, test for less than 11 V between the control circuit terminals listed below and ground:

* X206 control circuit terminal 1

* X206 control circuit terminal 2

* X206 control circuit terminal 4

* X206 control circuit terminal 5

瀚慖f greater than the specified range, test the control circuit for a short to voltage. If the circuit tests normal, replace the K36 SDM.

5. Ignition OFF, test for greater than 25 ohm between the control circuit terminals listed below and ground:

* X206 control circuit terminal 1

* X206 control circuit terminal 2

* X206 control circuit terminal 4

* X206 control circuit terminal 5

瀚慖f less than the specified range, test the control circuit for a short to ground. If the circuit tests normal, replace the K36 SDM.

6. Install a 3 A fused jumper wire between the control circuit terminals listed below:

* F105 Passenger instrument panel air bag stage 1 X206 terminal 1 and 2

* F105 Passenger instrument panel air bag stage 2 X206 terminal 4 and 5

7. Verify the scan tool Deployment Loop Resistance parameter is less than 2 ohm.

瀚慖f greater than the specified range, test both control circuits terminals for an open/high resistance. If the circuits test normal, replace the

K36 SDM.

8. If all circuits test normal, replace the F105 passenger instrument panel air bag.

Repair Instructions

Perform the Diagnostic Repair Verification (See: Verification Tests) after completing the diagnostic procedure.

* Driver or Passenger Seat Side Inflatable Restraint Module Replacement (See: Restraints and Safety Systems/Air Bag Systems/Air

Bag/Service and Repair/Removal and Replacement/Driver or Passenger Seat Side Inflatable Restraint Module Replacement)

* Seat Belt Retractor Pretensioner Replacement - Front (See: Restraints and Safety Systems/Seat Belt Systems/Seat Belt Tensioner/Service

and Repair/Removal and Replacement/Seat Belt Retractor Pretensioner Replacement - Front)

* Instrument Panel Inflatable Restraint Module Replacement (See: Restraints and Safety Systems/Air Bag Systems/Air Bag/Service and

Repair/Removal and Replacement/Instrument Panel Inflatable Restraint Module Replacement)

* Roof Side Rail Inflatable Restraint Module Replacement (See: Restraints and Safety Systems/Air Bag Systems/Air Bag/Service and

Repair/Removal and Replacement/Roof Side Rail Inflatable Restraint Module Replacement)

* SIR/SRS Wiring Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic

Procedures/Wiring Repairs/SIR/SRS Wiring Repairs)

* Control Module References (See: Testing and Inspection/Programming and Relearning) for SDM replacement, setup, and programming

B0022

DTC B0014-B0045

Diagnostic Instructions

* Perform the Diagnostic System Check - Vehicle (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic System

2010 Cadillac Truck SRX AWD V6-3.0L Page 92

2010 Cadillac Truck SRX AWD V6-3.0L Page 92

瀚慖f greater than the specified range, test both control circuits terminals for an open/high resistance. If the circuits test normal, replace the

K36 SDM.

7. If all circuits test normal, replace the F105, F106 air bag or F112 seat belt retractor pretensioner.

DTC B0019-B0020

1. Ignition OFF, disconnect harness connector X206.

2. Disconnect the scan tool.

3. Wait 120 seconds, test for greater than 25 ohm between the control circuit terminals listed below on the SDM side of the connector:

* F105 Passenger instrument panel air bag stage 1 X206 terminal 1 and 2

* F105 Passenger instrument panel air bag stage 2 X206 terminal 4 and 5

瀚慖f less than the specified range, test for a short between the control circuits, check each connector and CPA to ensure that the shorting

bars are lifted. If the circuits and shorting bars tests normal, replace the K36 SDM.

4. Ignition ON, test for less than 11 V between the control circuit terminals listed below and ground:

* X206 control circuit terminal 1

* X206 control circuit terminal 2

* X206 control circuit terminal 4

* X206 control circuit terminal 5

瀚慖f greater than the specified range, test the control circuit for a short to voltage. If the circuit tests normal, replace the K36 SDM.

5. Ignition OFF, test for greater than 25 ohm between the control circuit terminals listed below and ground:

* X206 control circuit terminal 1

* X206 control circuit terminal 2

* X206 control circuit terminal 4

* X206 control circuit terminal 5

瀚慖f less than the specified range, test the control circuit for a short to ground. If the circuit tests normal, replace the K36 SDM.

6. Install a 3 A fused jumper wire between the control circuit terminals listed below:

* F105 Passenger instrument panel air bag stage 1 X206 terminal 1 and 2

* F105 Passenger instrument panel air bag stage 2 X206 terminal 4 and 5

7. Verify the scan tool Deployment Loop Resistance parameter is less than 2 ohm.

瀚慖f greater than the specified range, test both control circuits terminals for an open/high resistance. If the circuits test normal, replace the

K36 SDM.

8. If all circuits test normal, replace the F105 passenger instrument panel air bag.

Repair Instructions

Perform the Diagnostic Repair Verification (See: Verification Tests) after completing the diagnostic procedure.

* Driver or Passenger Seat Side Inflatable Restraint Module Replacement (See: Restraints and Safety Systems/Air Bag Systems/Air

Bag/Service and Repair/Removal and Replacement/Driver or Passenger Seat Side Inflatable Restraint Module Replacement)

* Seat Belt Retractor Pretensioner Replacement - Front (See: Restraints and Safety Systems/Seat Belt Systems/Seat Belt Tensioner/Service

and Repair/Removal and Replacement/Seat Belt Retractor Pretensioner Replacement - Front)

* Instrument Panel Inflatable Restraint Module Replacement (See: Restraints and Safety Systems/Air Bag Systems/Air Bag/Service and

Repair/Removal and Replacement/Instrument Panel Inflatable Restraint Module Replacement)

* Roof Side Rail Inflatable Restraint Module Replacement (See: Restraints and Safety Systems/Air Bag Systems/Air Bag/Service and

Repair/Removal and Replacement/Roof Side Rail Inflatable Restraint Module Replacement)

* SIR/SRS Wiring Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic

Procedures/Wiring Repairs/SIR/SRS Wiring Repairs)

* Control Module References (See: Testing and Inspection/Programming and Relearning) for SDM replacement, setup, and programming

B0018

DTC B0014-B0045

Diagnostic Instructions

* Perform the Diagnostic System Check - Vehicle (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic System

2010 Cadillac Truck SRX AWD V6-3.0L Page 86

2010 Cadillac Truck SRX AWD V6-3.0L Page 86

瀚慖f greater than the specified range, test both control circuits terminals for an open/high resistance. If the circuits test normal, replace the

K36 SDM.

7. If all circuits test normal, replace the F105, F106 air bag or F112 seat belt retractor pretensioner.

DTC B0019-B0020

1. Ignition OFF, disconnect harness connector X206.

2. Disconnect the scan tool.

3. Wait 120 seconds, test for greater than 25 ohm between the control circuit terminals listed below on the SDM side of the connector:

* F105 Passenger instrument panel air bag stage 1 X206 terminal 1 and 2

* F105 Passenger instrument panel air bag stage 2 X206 terminal 4 and 5

瀚慖f less than the specified range, test for a short between the control circuits, check each connector and CPA to ensure that the shorting

bars are lifted. If the circuits and shorting bars tests normal, replace the K36 SDM.

4. Ignition ON, test for less than 11 V between the control circuit terminals listed below and ground:

* X206 control circuit terminal 1

* X206 control circuit terminal 2

* X206 control circuit terminal 4

* X206 control circuit terminal 5

瀚慖f greater than the specified range, test the control circuit for a short to voltage. If the circuit tests normal, replace the K36 SDM.

5. Ignition OFF, test for greater than 25 ohm between the control circuit terminals listed below and ground:

* X206 control circuit terminal 1

* X206 control circuit terminal 2

* X206 control circuit terminal 4

* X206 control circuit terminal 5

瀚慖f less than the specified range, test the control circuit for a short to ground. If the circuit tests normal, replace the K36 SDM.

6. Install a 3 A fused jumper wire between the control circuit terminals listed below:

* F105 Passenger instrument panel air bag stage 1 X206 terminal 1 and 2

* F105 Passenger instrument panel air bag stage 2 X206 terminal 4 and 5

7. Verify the scan tool Deployment Loop Resistance parameter is less than 2 ohm.

瀚慖f greater than the specified range, test both control circuits terminals for an open/high resistance. If the circuits test normal, replace the

K36 SDM.

8. If all circuits test normal, replace the F105 passenger instrument panel air bag.

Repair Instructions

Perform the Diagnostic Repair Verification (See: Verification Tests) after completing the diagnostic procedure.

* Driver or Passenger Seat Side Inflatable Restraint Module Replacement (See: Restraints and Safety Systems/Air Bag Systems/Air

Bag/Service and Repair/Removal and Replacement/Driver or Passenger Seat Side Inflatable Restraint Module Replacement)

* Seat Belt Retractor Pretensioner Replacement - Front (See: Restraints and Safety Systems/Seat Belt Systems/Seat Belt Tensioner/Service

and Repair/Removal and Replacement/Seat Belt Retractor Pretensioner Replacement - Front)

* Instrument Panel Inflatable Restraint Module Replacement (See: Restraints and Safety Systems/Air Bag Systems/Air Bag/Service and

Repair/Removal and Replacement/Instrument Panel Inflatable Restraint Module Replacement)

* Roof Side Rail Inflatable Restraint Module Replacement (See: Restraints and Safety Systems/Air Bag Systems/Air Bag/Service and

Repair/Removal and Replacement/Roof Side Rail Inflatable Restraint Module Replacement)

* SIR/SRS Wiring Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic

Procedures/Wiring Repairs/SIR/SRS Wiring Repairs)

* Control Module References (See: Testing and Inspection/Programming and Relearning) for SDM replacement, setup, and programming

B0017

DTC B0014-B0045

Diagnostic Instructions

* Perform the Diagnostic System Check - Vehicle (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic System

2010 Cadillac Truck SRX AWD V6-3.0L Page 80

2010 Cadillac Truck SRX AWD V6-3.0L Page 80

瀚慖f greater than the specified range, test both control circuits terminals for an open/high resistance. If the circuits test normal, replace the

K36 SDM.

7. If all circuits test normal, replace the F105, F106 air bag or F112 seat belt retractor pretensioner.

DTC B0019-B0020

1. Ignition OFF, disconnect harness connector X206.

2. Disconnect the scan tool.

3. Wait 120 seconds, test for greater than 25 ohm between the control circuit terminals listed below on the SDM side of the connector:

* F105 Passenger instrument panel air bag stage 1 X206 terminal 1 and 2

* F105 Passenger instrument panel air bag stage 2 X206 terminal 4 and 5

瀚慖f less than the specified range, test for a short between the control circuits, check each connector and CPA to ensure that the shorting

bars are lifted. If the circuits and shorting bars tests normal, replace the K36 SDM.

4. Ignition ON, test for less than 11 V between the control circuit terminals listed below and ground:

* X206 control circuit terminal 1

* X206 control circuit terminal 2

* X206 control circuit terminal 4

* X206 control circuit terminal 5

瀚慖f greater than the specified range, test the control circuit for a short to voltage. If the circuit tests normal, replace the K36 SDM.

5. Ignition OFF, test for greater than 25 ohm between the control circuit terminals listed below and ground:

* X206 control circuit terminal 1

* X206 control circuit terminal 2

* X206 control circuit terminal 4

* X206 control circuit terminal 5

瀚慖f less than the specified range, test the control circuit for a short to ground. If the circuit tests normal, replace the K36 SDM.

6. Install a 3 A fused jumper wire between the control circuit terminals listed below:

* F105 Passenger instrument panel air bag stage 1 X206 terminal 1 and 2

* F105 Passenger instrument panel air bag stage 2 X206 terminal 4 and 5

7. Verify the scan tool Deployment Loop Resistance parameter is less than 2 ohm.

瀚慖f greater than the specified range, test both control circuits terminals for an open/high resistance. If the circuits test normal, replace the

K36 SDM.

8. If all circuits test normal, replace the F105 passenger instrument panel air bag.

Repair Instructions

Perform the Diagnostic Repair Verification (See: Verification Tests) after completing the diagnostic procedure.

* Driver or Passenger Seat Side Inflatable Restraint Module Replacement (See: Restraints and Safety Systems/Air Bag Systems/Air

Bag/Service and Repair/Removal and Replacement/Driver or Passenger Seat Side Inflatable Restraint Module Replacement)

* Seat Belt Retractor Pretensioner Replacement - Front (See: Restraints and Safety Systems/Seat Belt Systems/Seat Belt Tensioner/Service

and Repair/Removal and Replacement/Seat Belt Retractor Pretensioner Replacement - Front)

* Instrument Panel Inflatable Restraint Module Replacement (See: Restraints and Safety Systems/Air Bag Systems/Air Bag/Service and

Repair/Removal and Replacement/Instrument Panel Inflatable Restraint Module Replacement)

* Roof Side Rail Inflatable Restraint Module Replacement (See: Restraints and Safety Systems/Air Bag Systems/Air Bag/Service and

Repair/Removal and Replacement/Roof Side Rail Inflatable Restraint Module Replacement)

* SIR/SRS Wiring Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic

Procedures/Wiring Repairs/SIR/SRS Wiring Repairs)

* Control Module References (See: Testing and Inspection/Programming and Relearning) for SDM replacement, setup, and programming

B0016

DTC B0014-B0045

Diagnostic Instructions

* Perform the Diagnostic System Check - Vehicle (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic System

2010 Cadillac Truck Escalade/ESV RWD V8-6.2L Page 494

2010 Cadillac Truck Escalade/ESV RWD V8-6.2L Page 494

瀚慖f not the specified value, test the appropriate signal circuit listed below for a short to voltage. If the circuit tests normal, replace the

MSM.

* Front vertical upward switch terminal A

* Front vertical downward switch terminal K

* Rear vertical upward switch terminal F

* Rear vertical downward switch terminal J

* Horizontal forward switch terminal D

* Horizontal rearward switch terminal C

* Recline forward switch terminal H

* Recline rearward switch terminal G

3. If all circuits test normal, test or replace the seat adjuster switch.

Component Testing

1. Ignition OFF, disconnect the harness connector at the seat adjuster switch.

2. Test for infinite resistance between each seat direction signal terminal listed below and the B+ terminal E with the switch in the open

position.

* Front vertical upward switch terminal A

* Front vertical downward switch terminal K

* Rear vertical upward switch terminal F

* Rear vertical downward switch terminal J

* Horizontal forward switch terminal D

* Horizontal rearward switch terminal C

* Recline forward switch terminal H

* Recline rearward switch terminal G

瀚慖f not the specified value, replace the seat adjuster switch.

3. Test for less than 1 ohm between each seat direction signal terminal listed below and the B+ terminal E with the switch in the closed position.

* Front vertical upward switch terminal A

* Front vertical downward switch terminal K

* Rear vertical upward switch terminal F

* Rear vertical downward switch terminal J

* Horizontal forward switch terminal D

* Horizontal rearward switch terminal C

* Recline forward switch terminal H

* Recline rearward switch terminal G

瀚慖f greater than the specified range, replace the adjuster switch switch.

Repair Instructions

Perform the Diagnostic Repair Verification (See: Verification Tests) after completing the diagnostic procedure.

* Power Seat Switch Replacement (with HP2) ()Power Seat Switch Replacement (without HP2) ()

* Control Module References (See: Testing and Inspection/Programming and Relearning) for MSM replacement, setup, and programming

B1815

DTC B1735, B1740, B1745, B1750, B1755, B1760, B1815, or B1820

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 B1735 01

- Seat Front Up Switch Circuit Short to Battery

2010 Cadillac Truck Escalade/ESV RWD V8-6.2L Page 486

2010 Cadillac Truck Escalade/ESV RWD V8-6.2L Page 486

瀚慖f not the specified value, test the appropriate signal circuit listed below for a short to voltage. If the circuit tests normal, replace the

MSM.

* Front vertical upward switch terminal A

* Front vertical downward switch terminal K

* Rear vertical upward switch terminal F

* Rear vertical downward switch terminal J

* Horizontal forward switch terminal D

* Horizontal rearward switch terminal C

* Recline forward switch terminal H

* Recline rearward switch terminal G

3. If all circuits test normal, test or replace the seat adjuster switch.

Component Testing

1. Ignition OFF, disconnect the harness connector at the seat adjuster switch.

2. Test for infinite resistance between each seat direction signal terminal listed below and the B+ terminal E with the switch in the open

position.

* Front vertical upward switch terminal A

* Front vertical downward switch terminal K

* Rear vertical upward switch terminal F

* Rear vertical downward switch terminal J

* Horizontal forward switch terminal D

* Horizontal rearward switch terminal C

* Recline forward switch terminal H

* Recline rearward switch terminal G

瀚慖f not the specified value, replace the seat adjuster switch.

3. Test for less than 1 ohm between each seat direction signal terminal listed below and the B+ terminal E with the switch in the closed position.

* Front vertical upward switch terminal A

* Front vertical downward switch terminal K

* Rear vertical upward switch terminal F

* Rear vertical downward switch terminal J

* Horizontal forward switch terminal D

* Horizontal rearward switch terminal C

* Recline forward switch terminal H

* Recline rearward switch terminal G

瀚慖f greater than the specified range, replace the adjuster switch switch.

Repair Instructions

Perform the Diagnostic Repair Verification (See: Verification Tests) after completing the diagnostic procedure.

* Power Seat Switch Replacement (with HP2) ()Power Seat Switch Replacement (without HP2) ()

* Control Module References (See: Testing and Inspection/Programming and Relearning) for MSM replacement, setup, and programming

B1750

DTC B1735, B1740, B1745, B1750, B1755, B1760, B1815, or B1820

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 B1735 01

- Seat Front Up Switch Circuit Short to Battery

2010 Cadillac Truck Escalade/ESV RWD V8-6.2L Page 444

2010 Cadillac Truck Escalade/ESV RWD V8-6.2L Page 444

瀚慖f the test lamp is always OFF, test the control circuit for a short to ground or open/high resistance. If the circuit tests normal, replace the

BCM.

4. If all circuits test normal, test or replace the Run/Crank relay.

Component Testing

1. Ignition OFF, disconnect the Run/Crank relay.

2. Test for 70-150 ohms between terminals 85 and 86.

瀚慖f the resistance is not within the specified range, replace the relay.

3. Test for infinite resistance between the following terminals:

* 30 and 86

* 30 and 87

* 30 and 85

* 85 and 87

瀚慖f less than specified, replace the relay.

4. Install a 3-amp fused jumper wire between relay terminal 85 and 12 volts. Install a jumper wire between relay terminal 86 and ground.

Measure for less than 5 ohms between terminals 30 and 87.

瀚慖f greater than specified, replace the relay.

Repair Instructions

Perform the Diagnostic Repair Verification (See: Verification Tests) after completing the repair.

Refer to Control Module References (See: Testing and Inspection/Programming and Relearning) for BCM replacement, setup, and programming

B1433

DTC B1433

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 B1433 00

- Ignition Switched Power Relay 2 Circuit

Diagnostic Fault Information

Circuit/System Description

The body control module (BCM) supplies voltage to the HVAC module and the windshield washer solvent heater (RPO XA7). Voltage is applied

when any of the following conditions are true:

* Ignition Switch is in ACC or RUN.

* The vehicle was remote started.

* The vehicle is in retained accessory power (RAP) mode.

Conditions for Running the DTC