2010 Cadillac CTS Sedan AWD V6-3.6L Page 797

2010 Cadillac CTS Sedan AWD V6-3.6L Page 797

瀚慖f not within the specified range, replace the G18 high pressure fuel pump.

3. Measure the resistance between each terminal and the high pressure fuel pump housing. The DMM should display OL.

瀚慖f less than the specified value, replace the G18 high pressure fuel pump.

Repair Instructions

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

* Fuel Pump Replacement (See: Powertrain Management/Fuel Delivery and Air Induction/Fuel Pump/Service and Repair)

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

P000D

DTC P000A-P000D, P0011, P0014, P0021, or P0024 (Without 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 P000A

- Intake Camshaft Position System Slow Response Bank 1

DTC P000B

- Exhaust Camshaft Position System Slow Response Bank 1

DTC P000C

- Intake Camshaft Position System Slow Response Bank 2

DTC P000D

- Exhaust Camshaft Position System Slow Response Bank 2

DTC P0011

- Intake Camshaft Position System Performance Bank 1

DTC P0014

- Exhaust Camshaft Position System Performance Bank 1

DTC P0021

- Intake Camshaft Position System Performance Bank 2

DTC P0024

- Exhaust Camshaft Position System Performance Bank 2

Circuit/System Description

The camshaft position actuator system enables the Engine Control Module (ECM) to change the timing of the camshafts while the engine is

operating. The camshaft position actuator solenoid signal from the ECM is pulse width modulated (PWM). The ECM controls the camshaft position

actuator solenoid duty cycle by controlling the amount of solenoid ON time. The camshaft position actuator solenoid controls the advance or the

retard of each camshaft. The camshaft position actuator solenoid controls the oil flow that applies the pressure to advance or retard the camshafts.

Conditions for Running the DTC

* Before the ECM can report DTC P000A, P000B, P000C, P000D, P0011, P0014, P0021, or P0024 failed, DTCs P0010, P0013, P0020,

P0023, P0341, P0342, P0343, P0346, P0347, P0348, P0366, P0367, P0368, P0391, P0392, P0393, P2088, P2089, P2090, P2091, P2092,

P2093, P2094, and P2095 must run and pass.

* DTC P0016, P0017, P0018, P0019, P0335, P0336, or P0338 is not set.

* The engine is operating for greater than 1 seconds.

* The engine speed is greater than 520 RPM.

* The engine must accelerate such that the CMP actuator system is commanded from the park position to the phased position. This is

considered a cam control cycle. There must be a minimum of 2 cam control cycles for at least 2.5 seconds each in the phased position.

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2010 Cadillac CTS Sedan AWD V6-3.6L Page 1088

瀚慖f not within the specified range, replace the 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 1 Sensor 2 (LF1) (See: Powertrain Management/Computers and Control Systems/Oxygen

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

* 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 (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

P0150

DTC P0130 or P0150 (with LLT)

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 P0130

- HO2S Signal Circuit Shorted to Heater Circuit Bank 1 Sensor 1

DTC P0150

- HO2S Signal Circuit Shorted to Heater Circuit Bank 2 Sensor 1

Circuit Description

The engine control module (ECM) supplies a voltage near 450 mV between the heated oxygen sensor (HO2S) signal circuit and the low reference

circuit. The HO2S varies the voltage over a range from about 1,000 mV when the exhaust is rich, down through about 10 mV when the exhaust is

lean. The ECM monitors and stores the HO2S voltage information. The ECM evaluates the HO2S voltage samples in order to determine the amount

of time that the HO2S voltage was out of range. Or, to detect if the HO2S signal voltage switches at the same rate at which the ECM is

commanding the heater ON and OFF.

Conditions for Running the DTC

Condition 1 and 2

* Before the ECM can report that DTC P0130 or P0150 failed, DTCs P0030, P0031, P0032, P0050, P0051, P0052, P0133, P0135, P0153, and

P0155 must run and pass.

* DTC P0201, P0202, P0203, P0204, P0205, P0206, P0261, P0262, P0264, P0265, P0267, P0268, P0270, P0271, P0273, P0274, P0276,

P0277, P2146, P2149, P2152, P2155, P216A, or P216D is not set.

* The engine is greater than 240 RPM.

* The ignition voltage is greater than 10 volts.

* The HO2S 1 heater duty cycle is greater than 90 percent for greater than 5 seconds.

* The DTCs run continuously once the conditions above exist for greater than 60 seconds.

Condition 3

* Before the ECM can report that DTC P0130 or P0150 failed, DTCs P0030, P0031, P0032, P0050, P0051, P0052, P0133, P0135, P0153, and

P0155 must run and pass.

* The engine is operating.

* The ignition voltage is greater than 10 volts.

* The air flow into the engine has exceeded 10 grams.

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2010 Cadillac Truck Escalade/ESV RWD V8-6.2L Page 2473

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

7. If all circuits and connections test normal, replace the throttle body assembly.

Repair Instructions

* Throttle Body Assembly Replacement (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 Engine Control Module replacement,

programming, and setup

Repair Verification

1. Install any components that have been removed or replaced during diagnosis.

2. Perform any adjustments, programming or setup procedures that are required when a component is removed or replaced.

3. Clear the DTCs with a scan tool.

4. Turn OFF the ignition for 60 s.

Note: If the Throttle Sweep Test is not available on the scan tool, use the accelerator to perform the test. Refer to Diagnostic Aids for further

details.

5. Perform the Throttle Sweep Test while observing the TAC Motor parameter with a scan tool. The TAC Motor parameter should display

Enabled while the Throttle Sweep Test is in progress.

6. If the repair was related to a DTC, duplicate the Conditions for Running the DTC and use the Freeze Frame/Failure Records, if applicable, in

order to verify the DTC does not reset. If the DTC resets or another DTC is present, refer to the Diagnostic Trouble Code (DTC) List -

Vehicle (See: Diagnostic Trouble Code Descriptions/Diagnostic Trouble Code (DTC) List - Vehicle) and perform the appropriate diagnostic

procedure.

P2119

DTC P1516, P2101, P2119, or P2176

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 P1516

- Throttle Actuator Control (TAC) Module Throttle Actuator Position Performance

DTC P2101

- Throttle Actuator Position Performance

DTC P2119

- Throttle Closed Position Performance

DTC P2176

- Minimum Throttle Position Not Learned

Diagnostic Fault Information

Circuit/System Description

The engine control module (ECM) controls the throttle valve by applying a varying voltage to the control circuits of the throttle actuator control

(TAC) motor. The ECM monitors the duty cycle that is required to actuate the throttle valve. The ECM monitors the throttle position (TP) sensors 1

and 2 to determine the actual throttle valve position.

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2010 Cadillac Truck SRX AWD V6-3.0L Page 370

瀚慖f not within the specified range, replace the S90 sunroof sunshade switch.

4. Test for 96-100 ohm between the signal terminal 1 and the low reference circuit terminal 4 while pressing the express open switch.

瀚慖f not within the specified range, replace the S90 sunroof sunshade switch.

5. Test for 1.7-1.8k ohm between the signal terminal 1 and the low reference circuit terminal 4 while pressing the close switch.

瀚慖f not within the specified range, replace the S90 sunroof sunshade switch.

6. Test for 930-940 ohm between the signal terminal 1 and the low reference circuit terminal 4 while pressing the express close switch.

瀚慖f not within the specified range, replace the S90 sunroof sunshade switch.

Repair Instructions

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

* Sunroof Switch Replacement (See: Body and Frame/Roof and Associated Components/Sunroof / Moonroof/Sunroof / Moonroof

Switch/Service and Repair)

* Sunroof Sunshade Motor Replacement (See: Body and Frame/Roof and Associated Components/Sunroof / Moonroof/Sun Shade/Service

and Repair/Sunroof Sunshade Motor Replacement)

* Control Module References (See: Testing and Inspection/Programming and Relearning)for sunshade motor/actuator replacement, setup and

programming

B369D

DTC B369D

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 B369D 00

- Sunroof Sunshade Actuator Malfunction

DTC B369D 39

- Sunroof Sunshade Actuator Internal Malfunction

DTC B369D 42

- Sunroof Sunshade Actuator Calibration Not Programmed

DTC B369D 4B

- Sunroof Sunshade Actuator Calibration Not Learned

Circuit/System Description

The sunshade is controlled by its own integrated motor/controller containing the necessary electronics, motor, hall effect position sensors, as well as

the interface to the driver control switches. The motor/controller is capable of controlling motion based on control switch activation and LIN-Bus

message commands from the body control module (BCM).

Conditions for Running the DTC

The ignition is ON.

Conditions for Setting the DTC

B369D 00

The sunshade module has detected and reported via the LIN-Bus that the sunshade actuator has an malfunction.

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2010 Cadillac Truck Escalade/ESV RWD V8-6.2L Page 2131

瀚慖f not within the specified range, refer to Charging System Test (See: Starting and Charging/Testing and Inspection/Component Tests

and General Diagnostics/Charging System Test).

2. If all circuits test normal, 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.

FPCM

DTC P0563 (FPCM)

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 P0563

- System Voltage High - FPCM

Diagnostic Fault Information

Circuit/System Description

The fuel pump control module (FPCM) monitors the system voltage to ensure that the voltage stays within the proper range. Damage to

components, and incorrect data may occur when the voltage is out of range. If the FPCM detects that the system voltage is high, DTC P0563 sets.

Conditions for Running the DTC

The ignition is ON.

Conditions for Setting the DTC

The FPCM detects that the system voltage is greater than 17.5 V.

Action Taken When the DTC Sets

DTC P0563 is a type C DTC.

Conditions for Clearing the DTC

DTC P0563 is a type C DTC.

Diagnostic Aids

* A high voltage DTC in multiple modules indicates a concern in the charging system.

* This DTC could be set by overcharging with a battery charger or jump starting.

Reference Information

Schematic Reference

Engine Controls Schematics (See: Diagrams/Electrical Diagrams/Powertrain Management/System Diagram)

Connector End View Reference

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2010 Cadillac Truck Escalade/ESV RWD V8-6.2L Page 475

瀚慖f not within the specified range, test both control circuits for an open/high resistance. If the circuits test normal, test or replace the

rearview mirror.

5. Test for 40-100 ohms between the control circuit terminal 2 and the control circuit terminal 6.

瀚慖f not within the specified range, test both control circuit for an open/high resistance. If the circuits test normal, test or replace the

rearview mirror.

6. If all circuits test normal, replace the door module.

Repair Instructions

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

* Outside Rearview Mirror Motor Replacement (See: Body and Frame/Mirrors/Power Mirror Motor/Service and Repair)

* Control Module References (See: Testing and Inspection/Programming and Relearning) for DDM or PDM replacement, setup, and

programming

B1640

DTC B1640

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 B1640 01

- Mirror Heater Circuit Short to Battery

DTC B1640 02

- Mirror Heater Circuit Short to Ground

Diagnostic Fault Information

Circuit/System Description

The Driver Door Module (DDM) and Passenger Door Module (PDM) supply voltage to the outside rearview mirror heater elements upon receipt of

a message from the HVAC module indicating that the rear defrost system is active. The door module supplies B+ through the driver/passenger

mirror heating element control circuit when a request is seen. Ground is applied through the driver/passenger mirror heating low reference circuit.

Conditions for Running the DTC

Battery voltage must be between 9-16 volts.

Conditions for Setting the DTC

B1640 01

A short to voltage is detected on the mirror heating element control circuit while the heated mirrors are inactive.

B1640 02

A short to ground is detected on the mirror heating element control circuit while the heated mirrors are active.

Action Taken When the DTC Sets

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2010 Cadillac Truck Escalade/ESV RWD V8-6.2L Page 320

瀚慖f not within the specified range, replace the sensor.

Repair Instructions

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

* Air Temperature Sensor Replacement - Upper Auxiliary (See: Heating and Air Conditioning/Discharge Air Temperature Sensor /

Switch/Service and Repair/Air Temperature Sensor Replacement - Upper Auxiliary)

* Duct Air Temperature Sensor Replacement - Upper Right Side (See: Heating and Air Conditioning/Discharge Air Temperature Sensor /

Switch/Service and Repair/Duct Air Temperature Sensor Replacement - Upper Right Side)

* Duct Air Temperature Sensor Replacement - Upper Left Side (See: Heating and Air Conditioning/Discharge Air Temperature Sensor /

Switch/Service and Repair/Duct Air Temperature Sensor Replacement - Upper Left Side)

* Air Temperature Sensor Replacement - Lower Auxiliary (Delphi) (See: Heating and Air Conditioning/Discharge Air Temperature Sensor /

Switch/Service and Repair/Air Temperature Sensor Replacement - Lower Auxiliary (Delphi))

* Duct Air Temperature Sensor Replacement - Lower Left Side (See: Heating and Air Conditioning/Discharge Air Temperature Sensor /

Switch/Service and Repair/Duct Air Temperature Sensor Replacement - Lower Left Side)

* Duct Air Temperature Sensor Replacement - Lower Right Side (See: Heating and Air Conditioning/Discharge Air Temperature Sensor /

Switch/Service and Repair/Duct Air Temperature Sensor Replacement - Lower Right Side)

* Ambient Air Temperature Sensor Replacement (See: Heating and Air Conditioning/Ambient Temperature Sensor / Switch HVAC/Service

and Repair)

* Inside Air Temperature Sensor Replacement (See: Heating and Air Conditioning/Cabin Temperature Sensor / Switch/Service and Repair)

* Auxiliary Inside Air Temperature Sensor Assembly Replacement (See: Heating and Air Conditioning/Discharge Air Temperature Sensor /

Switch/Service and Repair/Auxiliary Inside Air Temperature Sensor Assembly Replacement)

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

programming

B0514

DTC B0158, B0163, B0168, B0173, B0178, B0509, B0514, B3578, or B3583

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 B0158 02

- Outside Air Temperature Sensor Circuit Short to Ground

DTC B0158 05

- Outside Air Temperature Sensor Circuit Short to Battery or Open

DTC B0163 02

- Passenger Compartment Temp Sensor 1 Circuit Short to Ground

DTC B0163 05

- Passenger Compartment Temp Sensor 1 Circuit Short to Battery or Open

DTC B0168 02

- Passenger Compartment Temp Sensor 2 Circuit Short to Ground

DTC B0168 05

- Passenger Compartment Temp Sensor 2 Circuit Short to Battery or Open

DTC B0173 02

- Output Air Temperature Sensor 1 Circuit Short to Ground

DTC B0173 05

- Output Air Temperature Sensor 1 Circuit Short to Battery or Open

DTC B0178 02

- Output Air Temperature Sensor 2 Circuit Short to Ground

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2010 Cadillac Truck Escalade/ESV RWD V8-6.2L Page 280

瀚慖f not within the specified range, refer to Ambient / Inside Air Temperature Sensor Circuit Malfunction.

2. Measure actual inside air temperature using a thermometer. Compare this value to the scan tool Inside Air Temp. Sensor parameter and Aux.

Inside Air Temp. parameter. The measured temperature should be within 5 degrees of parameter.

瀚慖f not within the specified range, refer to Ambient / Inside Air Temperature Sensor Circuit Malfunction.

3. Measure actual temperature using a thermometer at each of the duct temperature sensors. Compare this value to the appropriate scan tool

Duct Actual parameter. The measured temperature should be within 5 degrees of appropriate Duct Actual parameter.

瀚慖f not within the specified range, refer to Duct Temperature Sensor Circuit Malfunction.

Circuit/System Testing

Ambient / Inside Air Temperature Sensor Circuit Malfunction

1. Ignition OFF, disconnect the harness connector at the appropriate temperature sensor.

2. Test for less than 1 ohm between the low reference circuit terminal B 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 HVAC

control module.

3. Ignition ON, verify the appropriate scan tool Temp Sensor parameter is greater than 85掳C (185掳F).

瀚慖f less than the specified range, test the signal circuit terminal A for a short to ground. If the circuit tests normal, replace the HVAC

control module.

4. Install a 3-amp fused jumper wire between the signal circuit terminal A and the low reference circuit terminal B. Verify the scan tool Temp

Sensor parameter is less than -35掳C (-39掳F).

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

replace the HVAC control module.

5. If all circuits test normal, test or replace the appropriate temperature sensor.

Duct Temperature Sensor Circuit Malfunction

1. Ignition OFF, disconnect the harness connector at the appropriate temperature sensor.

2. Test for less than 1.0 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 HVAC

control module.

3. Ignition ON, verify the appropriate Duct Temp Sensor Actual parameter is greater than 85掳C (185掳F).

瀚慖f less than the specified range, test the signal circuit terminal 1 for a short to ground. If the circuit tests normal, replace the HVAC

control module.

4. Install a 3-amp fused jumper wire between the signal circuit terminal 1 and the low reference circuit terminal 2. Verify the scan tool Duct

Temp Sensor Actual parameter is less than -35掳C (-39掳F).

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

replace the HVAC control module.

5. If all circuits test normal, test or replace the appropriate temperature sensor.

Component Testing

1. Ignition OFF, disconnect the harness connector at the appropriate temperature sensor.

2. Test for the appropriate resistance between the signal terminal A or 1 and the low reference terminal B or 2. Refer to Sensor Resistance Table

for Sensor Resistance Table (See: Heating and Air Conditioning/Specifications/Electrical Specifications) resistance values.

瀚慖f not within the specified range, replace the sensor.

Repair Instructions

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

* Air Temperature Sensor Replacement - Upper Auxiliary (See: Heating and Air Conditioning/Discharge Air Temperature Sensor /

Switch/Service and Repair/Air Temperature Sensor Replacement - Upper Auxiliary)

* Duct Air Temperature Sensor Replacement - Upper Right Side (See: Heating and Air Conditioning/Discharge Air Temperature Sensor /

2010 Cadillac Truck Escalade/ESV RWD V8-6.2L Page 271

2010 Cadillac Truck Escalade/ESV RWD V8-6.2L Page 271

瀚慖f not within the specified range, refer to Ambient / Inside Air Temperature Sensor Circuit Malfunction.

2. Measure actual inside air temperature using a thermometer. Compare this value to the scan tool Inside Air Temp. Sensor parameter and Aux.

Inside Air Temp. parameter. The measured temperature should be within 5 degrees of parameter.

瀚慖f not within the specified range, refer to Ambient / Inside Air Temperature Sensor Circuit Malfunction.

3. Measure actual temperature using a thermometer at each of the duct temperature sensors. Compare this value to the appropriate scan tool

Duct Actual parameter. The measured temperature should be within 5 degrees of appropriate Duct Actual parameter.

瀚慖f not within the specified range, refer to Duct Temperature Sensor Circuit Malfunction.

Circuit/System Testing

Ambient / Inside Air Temperature Sensor Circuit Malfunction

1. Ignition OFF, disconnect the harness connector at the appropriate temperature sensor.

2. Test for less than 1 ohm between the low reference circuit terminal B 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 HVAC

control module.

3. Ignition ON, verify the appropriate scan tool Temp Sensor parameter is greater than 85掳C (185掳F).

瀚慖f less than the specified range, test the signal circuit terminal A for a short to ground. If the circuit tests normal, replace the HVAC

control module.

4. Install a 3-amp fused jumper wire between the signal circuit terminal A and the low reference circuit terminal B. Verify the scan tool Temp

Sensor parameter is less than -35掳C (-39掳F).

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

replace the HVAC control module.

5. If all circuits test normal, test or replace the appropriate temperature sensor.

Duct Temperature Sensor Circuit Malfunction

1. Ignition OFF, disconnect the harness connector at the appropriate temperature sensor.

2. Test for less than 1.0 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 HVAC

control module.

3. Ignition ON, verify the appropriate Duct Temp Sensor Actual parameter is greater than 85掳C (185掳F).

瀚慖f less than the specified range, test the signal circuit terminal 1 for a short to ground. If the circuit tests normal, replace the HVAC

control module.

4. Install a 3-amp fused jumper wire between the signal circuit terminal 1 and the low reference circuit terminal 2. Verify the scan tool Duct

Temp Sensor Actual parameter is less than -35掳C (-39掳F).

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

replace the HVAC control module.

5. If all circuits test normal, test or replace the appropriate temperature sensor.

Component Testing

1. Ignition OFF, disconnect the harness connector at the appropriate temperature sensor.

2. Test for the appropriate resistance between the signal terminal A or 1 and the low reference terminal B or 2. Refer to Sensor Resistance Table

for Sensor Resistance Table (See: Heating and Air Conditioning/Specifications/Electrical Specifications) resistance values.

瀚慖f not within the specified range, replace the sensor.

Repair Instructions

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

* Air Temperature Sensor Replacement - Upper Auxiliary (See: Heating and Air Conditioning/Discharge Air Temperature Sensor /

Switch/Service and Repair/Air Temperature Sensor Replacement - Upper Auxiliary)

* Duct Air Temperature Sensor Replacement - Upper Right Side (See: Heating and Air Conditioning/Discharge Air Temperature Sensor /

2010 Cadillac Truck Escalade/ESV RWD V8-6.2L Page 262

2010 Cadillac Truck Escalade/ESV RWD V8-6.2L Page 262

瀚慖f not within the specified range, refer to Ambient / Inside Air Temperature Sensor Circuit Malfunction.

2. Measure actual inside air temperature using a thermometer. Compare this value to the scan tool Inside Air Temp. Sensor parameter and Aux.

Inside Air Temp. parameter. The measured temperature should be within 5 degrees of parameter.

瀚慖f not within the specified range, refer to Ambient / Inside Air Temperature Sensor Circuit Malfunction.

3. Measure actual temperature using a thermometer at each of the duct temperature sensors. Compare this value to the appropriate scan tool

Duct Actual parameter. The measured temperature should be within 5 degrees of appropriate Duct Actual parameter.

瀚慖f not within the specified range, refer to Duct Temperature Sensor Circuit Malfunction.

Circuit/System Testing

Ambient / Inside Air Temperature Sensor Circuit Malfunction

1. Ignition OFF, disconnect the harness connector at the appropriate temperature sensor.

2. Test for less than 1 ohm between the low reference circuit terminal B 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 HVAC

control module.

3. Ignition ON, verify the appropriate scan tool Temp Sensor parameter is greater than 85掳C (185掳F).

瀚慖f less than the specified range, test the signal circuit terminal A for a short to ground. If the circuit tests normal, replace the HVAC

control module.

4. Install a 3-amp fused jumper wire between the signal circuit terminal A and the low reference circuit terminal B. Verify the scan tool Temp

Sensor parameter is less than -35掳C (-39掳F).

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

replace the HVAC control module.

5. If all circuits test normal, test or replace the appropriate temperature sensor.

Duct Temperature Sensor Circuit Malfunction

1. Ignition OFF, disconnect the harness connector at the appropriate temperature sensor.

2. Test for less than 1.0 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 HVAC

control module.

3. Ignition ON, verify the appropriate Duct Temp Sensor Actual parameter is greater than 85掳C (185掳F).

瀚慖f less than the specified range, test the signal circuit terminal 1 for a short to ground. If the circuit tests normal, replace the HVAC

control module.

4. Install a 3-amp fused jumper wire between the signal circuit terminal 1 and the low reference circuit terminal 2. Verify the scan tool Duct

Temp Sensor Actual parameter is less than -35掳C (-39掳F).

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

replace the HVAC control module.

5. If all circuits test normal, test or replace the appropriate temperature sensor.

Component Testing

1. Ignition OFF, disconnect the harness connector at the appropriate temperature sensor.

2. Test for the appropriate resistance between the signal terminal A or 1 and the low reference terminal B or 2. Refer to Sensor Resistance Table

for Sensor Resistance Table (See: Heating and Air Conditioning/Specifications/Electrical Specifications) resistance values.

瀚慖f not within the specified range, replace the sensor.

Repair Instructions

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

* Air Temperature Sensor Replacement - Upper Auxiliary (See: Heating and Air Conditioning/Discharge Air Temperature Sensor /

Switch/Service and Repair/Air Temperature Sensor Replacement - Upper Auxiliary)

* Duct Air Temperature Sensor Replacement - Upper Right Side (See: Heating and Air Conditioning/Discharge Air Temperature Sensor /

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2010 Cadillac Truck Escalade RWD V8-6.2L Page 2131

瀚慖f not within the specified range, refer to Charging System Test (See: Starting and Charging/Testing and Inspection/Component Tests

and General Diagnostics/Charging System Test).

2. If all circuits test normal, 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.

FPCM

DTC P0563 (FPCM)

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 P0563

- System Voltage High - FPCM

Diagnostic Fault Information

Circuit/System Description

The fuel pump control module (FPCM) monitors the system voltage to ensure that the voltage stays within the proper range. Damage to

components, and incorrect data may occur when the voltage is out of range. If the FPCM detects that the system voltage is high, DTC P0563 sets.

Conditions for Running the DTC

The ignition is ON.

Conditions for Setting the DTC

The FPCM detects that the system voltage is greater than 17.5 V.

Action Taken When the DTC Sets

DTC P0563 is a type C DTC.

Conditions for Clearing the DTC

DTC P0563 is a type C DTC.

Diagnostic Aids

* A high voltage DTC in multiple modules indicates a concern in the charging system.

* This DTC could be set by overcharging with a battery charger or jump starting.

Reference Information

Schematic Reference

Engine Controls Schematics (See: Diagrams/Electrical Diagrams/Powertrain Management/System Diagram)

Connector End View Reference

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2010 Cadillac Truck Escalade RWD V8-6.2L Page 1393

瀚慖f not within the specified range, replace the drive motor battery assembly.

6. Each battery voltage reading should be within 1.5 V of each other.

瀚慖f not within the specified range, replace the drive motor battery assembly.

7. If all circuits test normal, replace the drive motor generator battery control module.

Repair Instructions

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

* Drive Motor Generator Battery Replacement and Shipping Preparation ()

* Control Module References (See: Testing and Inspection/Programming and Relearning) for drive motor generator battery control module

replacement, setup and programming

P0C0B

DTC P0C0B or P0C0E

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 P0C0B

- Drive Motor 1 Inverter Positive Voltage Circuit

DTC P0C0E

- Drive Motor 2 Inverter Positive Voltage Circuit

Circuit/System Description

This is an internal fault detection of the drive motor generator power inverter module (PIM) assembly. This fault is handled inside the PIM and no

external circuits are involved.

Conditions for Running the DTC

The inverter self test is complete.

Conditions for Setting the DTC

The control module does not detect voltage at the isolated gate bi-polar transistor (IGBT) bias supply.

Action Taken When the DTC Sets

* DTCs P0C0B and P0C0E are Type A DTCs.

* The PIM commands the battery energy control module (BECM) to open the high voltage contactor relays.

Conditions for Clearing the DTC

DTCs P0C0B and P0C0E are Type A DTCs.

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.

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瀚慖f not within the specified range, replace the drive motor battery assembly.

7. If all circuits test normal, replace the drive motor battery control module.

Repair Instructions

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

* Drive Motor Generator Battery Replacement and Shipping Preparation ()

* Control Module References (See: Testing and Inspection/Programming and Relearning) for drive motor generator battery control module

replacement, setup and programming

P0B51

DTC P0B3D, P0B42, P0B47, P0B4C, P0B51, P0B56, P0B5B, P0B60, P0B65, P0B6A, P0B6F, P0B74, P0B79, P0B7E, P0B83, P0B88, P0B8D,

P0B92, P0B97, or P0B9C

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 P0B3D

- Hybrid Battery 1 Circuit Low Voltage

DTC P0B42

- Hybrid Battery 2 Circuit Low Voltage

DTC P0B47

- Hybrid Battery 3 Circuit Low Voltage

DTC P0B4C

- Hybrid Battery 4 Circuit Low Voltage

DTC P0B51

- Hybrid Battery 5 Circuit Low Voltage

DTC P0B56

- Hybrid Battery 6 Circuit Low Voltage

DTC P0B5B

- Hybrid Battery 7 Circuit Low Voltage

DTC P0B60

- Hybrid Battery 8 Circuit Low Voltage

DTC P0B65

- Hybrid Battery 9 Circuit Low Voltage

DTC P0B6A

- Hybrid Battery 10 Circuit Low Voltage

DTC P0B6F

- Hybrid Battery 11 Circuit Low Voltage

DTC P0B74

- Hybrid Battery 12 Circuit Low Voltage

DTC P0B79

- Hybrid Battery 13 Circuit Low Voltage

DTC P0B7E

- Hybrid Battery 14 Circuit Low Voltage

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2010 Cadillac Truck Escalade RWD V8-6.2L Page 1306

瀚慖f not within the specified range, replace the drive motor battery assembly.

6. Each battery voltage reading should be within 1.5 V of each other.

瀚慖f not within the specified range, replace the drive motor battery assembly.

7. If all circuits test normal, replace the drive motor generator battery control module.

Repair Instructions

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

* Drive Motor Generator Battery Replacement and Shipping Preparation ()

* Control Module References (See: Testing and Inspection/Programming and Relearning) for drive motor generator battery control module

replacement, setup and programming

P0B50

DTC P0B3C, P0B41, P0B46, P0B4B, P0B50, P0B55, P0B5A, P0B5F, P0B64, P0B69, P0B6E, P0B73, P0B78, P0B7D, P0B82, P0B87, P0B8C,

P0B91, P0B96, or P0B9B

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 P0B3C

- Hybrid Battery 1 Circuit Performance

DTC P0B41

- Hybrid Battery 2 Circuit Performance

DTC P0B46

- Hybrid Battery 3 Circuit Performance

DTC P0B4B

- Hybrid Battery 4 Circuit Performance

DTC P0B50

- Hybrid Battery 5 Circuit Performance

DTC P0B55

- Hybrid Battery 6 Circuit Performance

DTC P0B5A

- Hybrid Battery 7 Circuit Performance

DTC P0B5F

- Hybrid Battery 8 Circuit Performance

DTC P0B64

- Hybrid Battery 9 Circuit Performance

DTC P0B69

- Hybrid Battery 10 Circuit Performance

DTC P0B6E

- Hybrid Battery 11 Circuit Performance

DTC P0B73

- Hybrid Battery 12 Circuit Performance

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2010 Cadillac Truck Escalade RWD V8-6.2L Page 1248

瀚慖f not within the specified range, replace the drive motor battery assembly.

7. If all circuits test normal, replace the drive motor battery control module.

Repair Instructions

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

* Drive Motor Generator Battery Replacement and Shipping Preparation ()

* Control Module References (See: Testing and Inspection/Programming and Relearning) for drive motor generator battery control module

replacement, setup and programming

P0B6A

DTC P0B3D, P0B42, P0B47, P0B4C, P0B51, P0B56, P0B5B, P0B60, P0B65, P0B6A, P0B6F, P0B74, P0B79, P0B7E, P0B83, P0B88, P0B8D,

P0B92, P0B97, or P0B9C

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 P0B3D

- Hybrid Battery 1 Circuit Low Voltage

DTC P0B42

- Hybrid Battery 2 Circuit Low Voltage

DTC P0B47

- Hybrid Battery 3 Circuit Low Voltage

DTC P0B4C

- Hybrid Battery 4 Circuit Low Voltage

DTC P0B51

- Hybrid Battery 5 Circuit Low Voltage

DTC P0B56

- Hybrid Battery 6 Circuit Low Voltage

DTC P0B5B

- Hybrid Battery 7 Circuit Low Voltage

DTC P0B60

- Hybrid Battery 8 Circuit Low Voltage

DTC P0B65

- Hybrid Battery 9 Circuit Low Voltage

DTC P0B6A

- Hybrid Battery 10 Circuit Low Voltage

DTC P0B6F

- Hybrid Battery 11 Circuit Low Voltage

DTC P0B74

- Hybrid Battery 12 Circuit Low Voltage

DTC P0B79

- Hybrid Battery 13 Circuit Low Voltage

DTC P0B7E

- Hybrid Battery 14 Circuit Low Voltage

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2010 Cadillac Truck Escalade RWD V8-6.2L Page 1245

瀚慖f not within the specified range, replace the drive motor battery assembly.

6. Each battery voltage reading should be within 1.5 V of each other.

瀚慖f not within the specified range, replace the drive motor battery assembly.

7. If all circuits test normal, replace the drive motor generator battery control module.

Repair Instructions

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

* Drive Motor Generator Battery Replacement and Shipping Preparation ()

* Control Module References (See: Testing and Inspection/Programming and Relearning) for drive motor generator battery control module

replacement, setup and programming

P0B5F

DTC P0B3C, P0B41, P0B46, P0B4B, P0B50, P0B55, P0B5A, P0B5F, P0B64, P0B69, P0B6E, P0B73, P0B78, P0B7D, P0B82, P0B87, P0B8C,

P0B91, P0B96, or P0B9B

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 P0B3C

- Hybrid Battery 1 Circuit Performance

DTC P0B41

- Hybrid Battery 2 Circuit Performance

DTC P0B46

- Hybrid Battery 3 Circuit Performance

DTC P0B4B

- Hybrid Battery 4 Circuit Performance

DTC P0B50

- Hybrid Battery 5 Circuit Performance

DTC P0B55

- Hybrid Battery 6 Circuit Performance

DTC P0B5A

- Hybrid Battery 7 Circuit Performance

DTC P0B5F

- Hybrid Battery 8 Circuit Performance

DTC P0B64

- Hybrid Battery 9 Circuit Performance

DTC P0B69

- Hybrid Battery 10 Circuit Performance

DTC P0B6E

- Hybrid Battery 11 Circuit Performance

DTC P0B73

- Hybrid Battery 12 Circuit Performance

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2010 Cadillac Truck Escalade RWD V8-6.2L Page 1005

瀚慖f not within the specified range, replace the drive motor battery assembly.

14. Each battery voltage reading should be within 1.5 V of each other.

瀚慖f not within the specified range, replace the drive motor battery assembly.

15. If all circuits test normal, replace the drive motor generator battery control module.

Repair Instructions

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

* Drive Motor Battery Negative High Voltage Contactor Relay Replacement ()

* Drive Motor Battery Positive High Voltage Contactor Relay Replacement ()

* Drive Motor Battery Positive and Negative Cable Replacement ()

* Drive Motor Generator Battery Replacement and Shipping Preparation ()

* Control Module References (See: Testing and Inspection/Programming and Relearning) for drive motor generator battery control

replacement, setup and programming

P0ABC

DTC P0ABB, P0ABC, or P0ABD

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 P0ABB

- Hybrid Battery Voltage Sensor Performance

DTC P0ABC

- Hybrid Battery Voltage Sensor Circuit Low Voltage

DTC P0ABD

- Hybrid Battery Voltage Sensor Circuit High Voltage

Diagnostic Fault Information

Circuit/System Description

The system contains twenty battery modules. Each module contains two 7.2 V cells for a total nominal system voltage of 288 V. Each battery

module is rated at 14.4 V direct current (DC) and all the modules are connected together in series. The drive motor generator battery is also referred

to as the hybrid battery.

The drive motor generator battery control module has several methods of monitoring the total voltage values of the hybrid batteries. The drive

motor generator battery control module monitors the calculated battery voltage and the terminal voltage. The calculated voltage represents the sum

of the voltages from the 20 individual battery measurements, and the terminal voltage represents the total DC bus voltage as measured on the output

side of the high voltage contactor. The drive motor generator battery control module compares these two voltage readings and looks for a

difference. The drive motor generator battery control module also monitors the terminal voltage for both over voltage and under voltage conditions.

Conditions for Running the DTC

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2010 Cadillac Truck SRX AWD V6-2.8L Turbo Page 1062

瀚慖f not within the specified range, replace the B65 Intake Manifold Pressure and Air Temperature sensor.

Repair Instructions

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

* Turbocharger Pressure Sensor Replacement (See: Powertrain Management/Fuel Delivery and Air Induction/Turbocharger/Service and

Repair/Turbocharger Pressure Sensor Replacement)

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

programming

P0114

DTC P0111-P0114 (LAU)

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 P0111

- Intake Air Temperature (IAT) Sensor Circuit Performance

DTC P0112

- Intake Air Temperature (IAT) Sensor Circuit Low Voltage

DTC P0113

- Intake Air Temperature (IAT) Sensor Circuit High Voltage

DTC P0114

- Intake Air Temperature (IAT) Sensor Intermittent

Diagnostic Fault Information

Typical Scan Tool Data

Circuit Description

The intake air temperature (IAT) sensor is an integral part of the Intake Manifold Pressure and Air Temperature sensor. The IAT sensor is a

variable resistor that measures the temperature of the intake air. The engine control module (ECM) supplies 5 V to the IAT signal circuit and

supplies a ground to the low reference circuit.

The following table illustrates the difference between temperature, resistance, and voltage:

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2010 Cadillac Truck SRX AWD V6-2.8L Turbo Page 370

瀚慖f not within the specified range, replace the S90 sunroof sunshade switch.

4. Test for 96-100 ohm between the signal terminal 1 and the low reference circuit terminal 4 while pressing the express open switch.

瀚慖f not within the specified range, replace the S90 sunroof sunshade switch.

5. Test for 1.7-1.8k ohm between the signal terminal 1 and the low reference circuit terminal 4 while pressing the close switch.

瀚慖f not within the specified range, replace the S90 sunroof sunshade switch.

6. Test for 930-940 ohm between the signal terminal 1 and the low reference circuit terminal 4 while pressing the express close switch.

瀚慖f not within the specified range, replace the S90 sunroof sunshade switch.

Repair Instructions

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

* Sunroof Switch Replacement (See: Body and Frame/Roof and Associated Components/Sunroof / Moonroof/Sunroof / Moonroof

Switch/Service and Repair)

* Sunroof Sunshade Motor Replacement (See: Body and Frame/Roof and Associated Components/Sunroof / Moonroof/Sun Shade/Service

and Repair/Sunroof Sunshade Motor Replacement)

* Control Module References (See: Testing and Inspection/Programming and Relearning)for sunshade motor/actuator replacement, setup and

programming

B369D

DTC B369D

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 B369D 00

- Sunroof Sunshade Actuator Malfunction

DTC B369D 39

- Sunroof Sunshade Actuator Internal Malfunction

DTC B369D 42

- Sunroof Sunshade Actuator Calibration Not Programmed

DTC B369D 4B

- Sunroof Sunshade Actuator Calibration Not Learned

Circuit/System Description

The sunshade is controlled by its own integrated motor/controller containing the necessary electronics, motor, hall effect position sensors, as well as

the interface to the driver control switches. The motor/controller is capable of controlling motion based on control switch activation and LIN-Bus

message commands from the body control module (BCM).

Conditions for Running the DTC

The ignition is ON.

Conditions for Setting the DTC

B369D 00

The sunshade module has detected and reported via the LIN-Bus that the sunshade actuator has an malfunction.

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2010 Cadillac Truck SRX AWD V6-2.8L Turbo Page 1009

瀚慖f not within the specified range, replace the B52 Heated Oxygen Sensor.

Repair Instructions

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

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

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

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

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

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

programming

P0038

DTC P0030, P0031, P0032, P0036, P0037, or P0038 (Without 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 Sensor 1

DTC P0031

- HO2S Heater Control Circuit Low Voltage Sensor 1

DTC P0032

- HO2S Heater Control Circuit High Voltage Sensor 1

DTC P0036

- Heater Control Circuit Sensor 2

DTC P0037

- HO2S Heater Control Circuit Low Voltage Sensor 2

DTC P0038

- HO2S Heater Control Circuit High Voltage Sensor 2

Diagnostic Fault Information

Circuit Description

The heated oxygen sensor (HO2S) heater reduces the time required for the oxygen sensor to reach operating temperature and maintains the

operating temperature during extended idle periods. When the ignition is turned to the ON position, ignition voltage is supplied directly to the

sensor heater. The Engine Control Module (ECM) controls the heater operation by first modulating the control circuit to ground when the sensors

are cold. This prevents the possibility of thermal shock to the sensor, from condensation build-up on the sensor, by controlling the sensors rate of

heating. After a predetermined amount of time, the ECM commands the heaters ON continuously. Once the sensor reaches operating temperature,

the ECM may modulate the heater control circuit to ground, to maintain a desired temperature.

The ECM controls the heater by grounding the control circuit with a solid state device called a driver. The driver is equipped with a feedback

circuit that is pulled-up to voltage. The ECM can determine if the control circuit is open, shorted to ground, or shorted to a voltage by monitoring

the feedback voltage.

Conditions for Running the DTC