2010 Cadillac Truck Escalade EXT AWD V8-6.2L Page 845

2010 Cadillac Truck Escalade EXT AWD V8-6.2L Page 845

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+ circuit Terminal 13 and ground.

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

B+ circuit fuse is open, replace the BPMV.

4. If all circuits test normal, replace the BPMV and verify DTC does not reset. 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/Greater than/Equal to 3900 kg (8600 lb) GVW)

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

Brake Pedal Position Sensor 4 Not Plausible

DTC C0277, C120C, C129A, C129B, C129D, C129E, C12B1, or C12F8

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 C0277 03

- BMC Primary Piston Position Sensor A and B Circuit Performance Voltage Below Threshold

DTC C129A

- Brake Pedal Position Sensor 3 Circuit Low

DTC C129D

- Brake Pedal Position Sensor 4 Circuit Low

DTC C0277 07

- BMC Primary Piston Position Sensor A and B Circuit Voltage Above Threshold

DTC C129B

- Brake Pedal Position Sensor 3 Circuit High

DTC C129E

- Brake Pedal Position Sensor 4 Circuit High

DTC C0277 5A

- BMC Primary Piston Position Sensor A and B Circuit Plausibility Failure

DTC C12B1

- ABS Master Cylinder Pressure Sensor and Brake Pedal Position Sensor Not Plausible

DTC C12F8

- Brake Pedal Position Sensor 3 Not Plausible

DTC C120C

- Brake Pedal Position Sensor 4 Not Plausible

Diagnostic Fault Information