2010 Cadillac Truck Escalade RWD V8-6.0L Hybrid Page 796

2010 Cadillac Truck Escalade RWD V8-6.0L Hybrid Page 796

Circuit/System Verification

1. Using a scan tool, perform the EBCM, Module Setup, EBCM Relearn.

2. Verify that DTC C012C, C121A, C128C, C128F, C12B9, C12BA, C12BB or C12F7 is not set.

瀚慖f the DTC is set replace brake pressure modulator valve 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, programming and setup

C12CC

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