2010 Cadillac Truck Escalade RWD V8-6.0L Hybrid Page 955

2010 Cadillac Truck Escalade RWD V8-6.0L Hybrid Page 955

2. Using a scan tool, perform the EBCM, module setup, and EBCM Relearn.

3. Verify that DTC C012D, C120A, C128A, C128D, C12BC, C12BD, or C12BE is not set.

瀚慖f DTC is set replace brake pressure modulator valve (BPMV) assembly. If the DTC resets, replace the EBCM.

Repair Instructions

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

* Brake Pressure Modulator Valve Replacement (See: Brakes and Traction Control/Antilock Brakes / Traction Control Systems/Hydraulic

Control Assembly - Antilock Brakes/Service and Repair)

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

Antilock Brake System - Hybrid (HP2)

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

DTC C123D

- EBCM Solenoid Timeout

DTC C123E

- EBCM High End Timer Periodic Interrupt

DTC C123F

- EBCM Serial Peripheral Interface Inoperative

DTC C1255

- Electronic Control Unit Performance

2010 Cadillac Truck Escalade RWD V8-6.0L Hybrid Page 780

2010 Cadillac Truck Escalade RWD V8-6.0L Hybrid Page 780

2. Using a scan tool, perform the EBCM, module setup, and EBCM Relearn.

3. Verify that DTC C012D, C120A, C128A, C128D, C12BC, C12BD, or C12BE is not set.

瀚慖f DTC is set replace brake pressure modulator valve (BPMV) assembly. If the DTC resets, replace the EBCM.

Repair Instructions

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

* Brake Pressure Modulator Valve Replacement (See: Brakes and Traction Control/Antilock Brakes / Traction Control Systems/Hydraulic

Control Assembly - Antilock Brakes/Service and Repair)

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

C12BE

DTC C012D, C120A, C128A, C128D, C12BC, C12BD, or C12BE

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 C012D 00

- Brake Boost Regulation Pressure Sensor

DTC C128D

- Brake Boost Regulation Pressure Sensor

DTC C012D 01

- Brake Boost Regulation Pressure Sensor Short to Battery

DTC C12BD

- Brake Boost Regulation Pressure Sensor Short to Battery

DTC C012D 06

- Brake Boost Regulation Pressure Sensor Short to Ground or Open

DTC C12BC

- Brake Boost Regulation Pressure Sensor Short to Ground or Open

DTC C012D 11

- Brake Boost Regulation Pressure Sensor Above Maximum Threshold

DTC C128A

- Brake Boost Regulation Pressure Sensor Above Maximum Threshold

DTC C012D 5A

- Brake Boost Regulation Pressure Sensor Plausibility Failure

DTC C120A

- Brake Boost Regulation Pressure Sensor Plausibility Failure

DTC C012D 0F

- Brake Boost Regulation Pressure Sensor Erratic

DTC C12BE

- Brake Boost Regulation Pressure Sensor Erratic

Circuit/System Description

The electronic brake control module (EBCM) uses input from the boost pressure sensor for more accurate control during brake and vehicle stability

enhancement system (VSES) event. The boost pressure sensor is internal to the brake pressure modulator valve (BPMV).