2010 Cadillac Truck Escalade RWD V8-6.0L Hybrid Page 993

2010 Cadillac Truck Escalade RWD V8-6.0L Hybrid Page 993

1. Ignition OFF, disconnect the harness connector at the EBCM.

2. Test for less than 1 ohm between the ground circuits listed below and ground.

* Terminal 13

* Terminal 38

瀚慖f greater than the specified range, test the ground circuit for an open/high resistance.

3. Ignition ON, verify that a test lamp illuminates between the B+ circuits listed below and ground.

* Terminal 1

* Terminal 25

瀚慖f the test lamp does not illuminate, test the appropriate circuit for a short to ground or an open/high resistance.

4. If all circuits test normal, replace the EBCM.

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 EBCM replacement, setup, and programming

C123D

DTC C056D, C120C, C121C, C121E, C121F, C123A-C1256, C126E-C127C, C12C2-C12DB, C12DE, C12DF, or C12F2-C12F6

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) provide an overview of each diagnostic category.

DTC Descriptors

DTC C056D 00

- ECU Hardware Performance

DTC C056D 3C

- ECU Hardware Performance Internal Communications Failure

DTC C056D 59

- ECU Hardware Performance

DTC C120C

- Brake Pedal Position Sensor 4 Plausibility

DTC C121C

- EBCM Internal Communication Error

DTC C121E

- EBCM Unimplemented Interrupt

DTC C121F

- EBCM Unexpected Exception

DTC C123A

- EBCM High End Timer Watchdog

DTC C123B

- EBCM High End Timer Program Overflow

DTC C123C

- EBCM High End Timer RAM Fault

2010 Cadillac Truck Escalade RWD V8-6.0L Hybrid Page 705

2010 Cadillac Truck Escalade RWD V8-6.0L Hybrid Page 705

1. Ignition OFF, disconnect the harness connector at the adjustable pedal switch.

2. Test for infinite resistance between the 12-volt reference terminal 11 and the signal terminals listed below:

* Terminal 10

* Terminal 12

瀚慖f not the specified value, replace the adjustable pedal switch.

3. Adjustable pedal switch in the FWD position, test for less than 2 ohms between the 12-volt reference terminal 11 and the signal terminal 12.

瀚慖f greater than the specified range, replace the adjustable pedal switch.

4. Adjustable pedal switch in the RWD position, test for less than 2 ohms between the 12-volt reference terminal 11 and the signal terminal 10.

瀚慖f greater than the specified range, replace the adjustable pedal switch.

Z75

1. Ignition OFF, disconnect the harness connector at the adjustable pedal switch.

2. Test for infinite resistance between the 12-volt reference terminal 5 and the signal terminals listed below:

* Terminal 4

* Terminal 6

瀚慖f not the specified value, replace the adjustable pedal switch.

3. Adjustable pedal switch in the FWD position, test for less than 2 ohms between the 12-volt reference terminal 5 and the signal terminal 6.

瀚慖f greater than the specified range, replace the adjustable pedal switch.

4. Adjustable pedal switch in the RWD position, test for less than 2 ohms between the 12-volt reference terminal 5 and the signal terminal 4.

瀚慖f greater than the specified range, replace the adjustable pedal switch.

Repair Instructions

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

* Accessory Switch Replacement (Except Cadillac) (See: Instrument Panel, Gauges and Warning Indicators/Service and Repair/Accessory

Switch Replacement (Except Cadillac))Accessory Switch Replacement (Cadillac) (See: Instrument Panel, Gauges and Warning

Indicators/Service and Repair/Accessory Switch Replacement (Cadillac))

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

B3605

DTC B3604 or B3605

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 B3604 01

- Adjustable Foot Pedal Forward Switch Circuit Short to Battery

DTC B3605 01

- Adjustable Foot Pedal Rearward Switch Circuit Short to Battery

Diagnostic Fault Information

2010 Cadillac Truck Escalade RWD V8-6.0L Hybrid Page 698

2010 Cadillac Truck Escalade RWD V8-6.0L Hybrid Page 698

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 /

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

B3588

DTC B3588

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 B3588 02

- Rear Fog Lamp Switch Circuit Short to Ground

Diagnostic Fault Information

Circuit/System Description

The auxiliary body control module (XBCM) receives a momentary ground signal from the rear fog lamp switch when the switch is activated. The

rear fog lamps will remain illuminated until the switch is activated again or when the ignition key is cycled.

Conditions for Running the DTC

System voltage to the XBCM must be 9-16 V.

2010 Cadillac Truck Escalade RWD V8-6.0L Hybrid Page 626

2010 Cadillac Truck Escalade RWD V8-6.0L Hybrid Page 626

1. Ignition OFF, disconnect the harness connector at any component with inoperative courtesy lighting.

2. Ignition OFF, scan tool disconnected, interior lamps OFF, doors CLOSED, test for less than 5 ohm between the ground circuit and ground.

瀚慖f greater than the specified range, test the ground circuit for an open/high resistance.

3. Connect a test lamp between the control circuit and ground.

4. Command the Courtesy Lamp control ON and OFF with a scan tool. The test lamp should turn ON and OFF when changing between the

commanded states.

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

the BCM.

瀚慖f the test lamp is always ON, test the control circuit for a short to voltage. If the circuit tests normal, replace the BCM.

5. If all circuits test normal, replace the component with the inoperative backlighting.

Repair Instructions

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

* Dome Lamp Replacement (See: Lighting and Horns/Dome Lamp/Service and Repair)

* Control Module References (See: Testing and Inspection/Programming and Relearning) for driver or passenger door switch replacement,

setup, and programming

B2575

DTC B2575

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 2575 00

- Headlamp Control Circuit

Diagnostic Fault Information

Circuit/System Description

2010 Cadillac Truck Escalade RWD V8-6.0L Hybrid Page 601

2010 Cadillac Truck Escalade RWD V8-6.0L Hybrid Page 601

1. Ignition OFF, disconnect the harness connector at the liftgate handle switch.

2. Test for infinite resistance between the signal terminal A and the ground terminal B with the switch in the open position.

瀚慖f not the specified value, replace the liftgate handle switch.

3. Test for less than 2 ohms between the signal terminal A and the ground terminal B with the switch in the closed position.

瀚慖f greater than the specified range, replace the liftgate handle switch.

Repair Instructions

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

* Liftgate Release Switch Replacement (Except Avalanche and Escalade EXT) (See: Body and Frame/Doors, Hood and Trunk/Trunk /

Liftgate/Trunk / Liftgate Switch/Service and Repair/Liftgate Release Switch Replacement (Except Avalanche and Escalade EXT))

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

B2495

DTC B2495

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 B2495 01

- Endgate/Liftgate Latch Control Circuit Short to Battery

DTC B2495 02

- Endgate/Liftgate Latch Control Circuit Short to Ground

DTC B2495 04

- Endgate/Liftgate Latch Control Circuit Open Circuit

Diagnostic Fault Information

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2010 Cadillac Truck Escalade RWD V8-6.0L Hybrid Page 417

1. Ignition OFF, disconnect the X3 harness connector at the audio amplifier.

2. Ignition ON, radio ON and un-muted, test for 0.5-1.0 volts between the amplifier control circuit terminal 11 and ground.

瀚慖f greater than the specified value, test the amplifier control circuit for a short to voltage. If the circuit tests normal, replace the radio.

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

replace the radio.

3. If all circuits test normal, replace the amplifier.

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 radio or amplifier replacement

B1288

DTC B1288

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 B1288 01

- Video Display Mode Control Signal Short to Battery

DTC B1288 02

- Video Display Mode Control Signal Short to Ground

DTC B1288 04

- Video Display Mode Control Signal Open Circuit

Diagnostic Fault Information

Circuit/System Description

The radio can control the video display mode on vehicles equipped with rear seat entertainment (RSE) video. The radio varies a pulse with

modulated (PWM) signal to the rear entertainment video screen to command the display mode.

Conditions for Running the DTC

* Ignition ON.

* Battery voltage must be between 9-16 volts.

Conditions for Setting the DTC

The DTC will set when the radio detects a short to voltage, short to ground, or an open/high resistance in the video display mode control circuit 400

ms after the radio activates the remote enable circuit.

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2010 Cadillac Truck Escalade RWD V8-6.0L Hybrid Page 301

1. Ignition OFF, disconnect the harness connector at the liftglass latch assembly.

2. Test for less than 5 Ohms between the ground circuit terminal 3 and ground.

瀚慖f greater than the specified range, test the ground circuit for an open/high resistance.

3. Ignition ON, verify the scan tool Liftgate Ajar Switch parameter is Inactive.

瀚慖f not the specified value, test the signal circuit terminal 4 for a short to ground. If the circuit tests normal, replace the LGM.

4. Install a 3A fused jumper wire between the signal circuit terminal 4 and ground. Verify the scan tool Liftgate Ajar Switch parameter is

Active.

瀚慖f not the specified value, test the signal circuit for a short to voltage or an open/high resistance. If the circuit tests normal, replace the

LGM.

5. If all circuits test normal, test or replace the liftglass latch assembly.

Component Testing

1. Ignition OFF, disconnect the harness connector at the liftglass latch assembly.

2. Test for infinite resistance between the signal terminal 4 and the ground terminal 3 with the switch in the open position.

瀚慖f not the specified value, replace the liftglass latch assembly.

3. Test for less than 2 Ohms between the signal terminal 4 and the ground terminal 3 with the switch in the closed position.

瀚慖f not the specified value, replace the liftglass latch assembly.

Repair Instructions

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

* Liftgate Window Latch Replacement (See: Body and Frame/Doors, Hood and Trunk/Trunk / Liftgate/Trunk / Liftgate Latch/Service and

Repair/Liftgate Window Latch Replacement)

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

HVAC - Manual

DTC B0413, B0423, B0433, B3779, or B3782

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 B0413 02

- Temperature Control 1 Feedback Circuit Short to Ground

DTC B0413 05

- Temperature Control 1 Feedback Circuit Short to Battery or Open

DTC B0413 61

- Temperature Control 1 Feedback Circuit Actuator Stuck Open

DTC B0423 02

- Temperature Control 2 Feedback Circuit Short to Ground

DTC B0423 05

- Temperature Control 2 Feedback Circuit Short to Battery or Open

DTC B0423 61

- Temperature Control 2 Circuit Actuator Stuck

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2010 Cadillac Truck Escalade RWD V8-6.0L Hybrid Page 275

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 /

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

B0178

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

2010 Cadillac Truck Escalade RWD V8-6.0L Hybrid Page 266

2010 Cadillac Truck Escalade RWD V8-6.0L Hybrid Page 266

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 /

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

B0168

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

2010 Cadillac Truck Escalade RWD V8-6.0L Hybrid Page 255

2010 Cadillac Truck Escalade RWD V8-6.0L Hybrid Page 255

1. Ignition OFF, disconnect the X3 harness connector at the LGM.

2. Ignition OFF, test for less than 1 ohm between the low reference terminal 11 at the LGM and ground.

瀚慖f not the specified range, replace the LGM.

3. Ignition ON, test for 4.8-5.2 volts between 5-volt reference terminal 8 at the LGM and ground.

瀚慖f greater than the specified value, replace the LGM.

4. Ignition ON, test for 4.8-5.2 volts are between sensor 1 signal terminal 9 and low reference terminal 11 at the LGM.

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

5. Test for 4.8-5.2 volts between sensor 2 signal terminal 10 and low reference terminal 11 at the LGM.

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

6. If all circuits test normal, test or replace the liftgate motor assembly.

Repair Instructions

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

* Liftgate Close Actuator Motor Replacement (See: Body and Frame/Doors, Hood and Trunk/Trunk / Liftgate/Trunk / Liftgate Motor/Service

and Repair/Liftgate Close Actuator Motor Replacement)

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

B153F

DTC B153F

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 B153F 02

- Liftgate Object Sensor Signal Circuit Short to Ground

DTC B153F 03

- Liftgate Object Sensor Signal Circuit Voltage Below Treshold

DTC B153F 05

- Liftgate Object Sensor Signal Circuit Short to Battery or Open

DTC B153F 07

- Liftgate Object Sensor Signal Circuit Voltage Above Threshold

Diagnostic Fault Information

Circuit/System Description

The liftgate object sensors are pressure sensitive touch tapes located on either side of the upper inside edge of the liftgate panel. The two tape

switches are placed in series between the liftgate object sensor signal circuit and the liftgate object low reference circuit. Each object sensor has a

resistor as well as a switch. The resistors enable the liftgate module to perform diagnostic functions on the circuits. When both touch tape sensors

are not pressed, the 5 volt reference voltage supplied by the liftgate module passes through the resistors and the liftgate module detects

approximately 3.3 volts. Pressing a touch tape will cause the voltage to drop to approximately to 2.5 volts indicating an obstruction is present. If the

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2010 Cadillac Truck Escalade RWD V8-6.0L Hybrid Page 202

1. Ignition OFF, disconnect the harness connector at the appropriate B88 seat position sensor.

2. Test for less than 10 ohm between the low reference circuit terminal 1 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 K36

SDM.

3. Ignition ON, test for 4-9 V between the signal circuit terminal 2 and ground.

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

the K36 SDM.

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

4. If all circuits test normal, replace the B88 seat position sensor.

Repair Instructions

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

* Inflatable Restraint Seat Position Sensor Replacement (with HP2) (See: Restraints and Safety Systems/Air Bag Systems/Seat Position

Sensor/Service and Repair)Inflatable Restraint Seat Position Sensor Replacement (without HP2) (See: Restraints and Safety Systems/Air

Bag Systems/Seat Position Sensor/Service and Repair)

* 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

B0080

DTC B0079 or B0080

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 B0079 01

- Driver Seat Position Sensor Circuit Short to Battery

DTC B0079 02

- Driver Seat Position Sensor Circuit Short to Ground

DTC B0079 04

- Driver Seat Position Sensor Circuit Open

DTC B0079 05

- Driver Seat Position Sensor Circuit High Voltage or Open

DTC B0079 06

- Driver Seat Position Sensor Circuit Low Voltage or Open

DTC B0079 08

- Driver Seat Position Sensor Circuit Performance-Signal Invalid

DTC B0079 0C

- Driver Seat Position Sensor Circuit Low Current

DTC B0080 01

- Passenger Seat Position Sensor Circuit Short to Battery

DTC B0080 02

- Passenger Seat Position Sensor Circuit Short to Ground

DTC B0080 04

- Passenger Seat Position Sensor Circuit Open

2010 Cadillac Truck Escalade EXT AWD V8-6.2L Page 3108

2010 Cadillac Truck Escalade EXT AWD V8-6.2L Page 3108

1. Ignition OFF, disconnect the harness connector of the yaw rate sensor.

2. Ignition ON, verify that a test lamp illuminates between the module voltage circuit and ground.

瀚慖f the test lamp does not illuminate, test the circuit for a short to ground or an open/high resistance. If the circuit tests normal, replace the

EBCM.

3. Ignition OFF, test for less than 5 ohms between the module ground circuits and ground.

瀚慖f greater than the specified value, test the ground circuit for an open/high resistance. If the circuit tests normal, replace the EBCM.

4. If all circuits test normal, replace the yaw rate sensor.

Repair Instructions

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

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

Procedures/Wiring Repairs/GMLAN Wiring Repairs)

* ABS Description and Operation (See: Brakes and Traction Control/Antilock Brakes / Traction Control Systems/Description and

Operation/ABS Description and Operation) for the ABS - Hybrid

* Vehicle Yaw Sensor with Vehicle Lateral Accelerometer Replacement (See: Brakes and Traction Control/Antilock Brakes / Traction

Control Systems/Yaw Rate Sensor/Service and Repair/Less than 3900 kg (8600 lb) GVW) for the ABS - Non-Hybrid Less than 3900 kg

(8600 lb) GVW

* Vehicle Yaw Sensor with Vehicle Lateral Accelerometer Replacement (See: Brakes and Traction Control/Antilock Brakes / Traction

Control Systems/Yaw Rate Sensor/Service and Repair/Less than 3900 kg (8600 lb) GVW) for the ABS - Non-Hybrid Greater than/Equal to

3900 kg (8600 lb) GVW

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

U2157

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