2010 Cadillac Truck Escalade RWD V8-6.0L Hybrid Page 873

2010 Cadillac Truck Escalade RWD V8-6.0L Hybrid Page 873

* Accumulator pressure greater than 16,000 kPa (2320 psi) for 250 ms.

* DTCs C12BC, C12BD, C12BE, C128A, C128D, C127D, C12E4, C1255, C1256, C126E, C123C, or C127C not set.

Action Taken When the DTC Sets

* The EBCM disables the ABS, traction control system and the vehicle stability enhancement system for the duration of the ignition cycle.

* A driver information center message and/or a warning indicator may be displayed.

Conditions for Clearing the DTC

* The condition for setting the DTC is no longer present.

* The EBCM clears the history DTC when a current DTC is not detected in 40 consecutive drive cycles.

Diagnostic Aids

* Excessive brake pedal applies (10 or more applies in 30 seconds) can cause the DTC to set.

* The DTC can set if the ignition key is in the Accessory position, the brake pedal is applied and then the ignition key is turned ON.

Reference Information

Schematic Reference

Antilock Brake System Schematics (See: Brakes and Traction Control/Antilock Brakes / Traction Control Systems/Diagrams/Electrical Diagrams)

Connector End View Reference

Component Connector End Views (See: Diagrams/Connector Views)

Description and Operation

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

Description and Operation)

Electrical Information Reference

* Circuit Testing (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic Procedures/Circuit

Testing/Circuit Testing)

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

Procedures/Connector Repairs/Connector Repairs)

* Testing for Intermittent Conditions and Poor Connections (See: Testing and Inspection/Component Tests and General Diagnostics/General

Electrical Diagnostic Procedures/Circuit Testing/Testing for Intermittent Conditions and Poor Connections)

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

Repairs/Wiring Repairs)

Scan Tool Reference

Control Module References (See: Testing and Inspection/Programming and Relearning) for scan tool information

Circuit/System Verification

Note: The battery must be able to maintain a charge during this procedure. It is recommended that a charger/maintainer or equivalent be used to

maintain proper battery voltage during this procedure.

1. Verify that no other EBCM DTCs are set.

瀚慖f DTC is set, refer to Diagnostic Trouble Code (DTC) List - Vehicle (See: Diagnostic Trouble Code Descriptions/Diagnostic Trouble

Code (DTC) List - Vehicle).

2. Ignition ON, engine OFF, using a scan tool access the EBCM, Module Setup screen, and perform the EBCM Relearn. The relearn procedure

will verify valve and pressure sensor calibrations are correct.

Note: To ensure the complete brake modulator and high pressure accumulator pressure relief procedure is allowed to occur; the brake

controller must see one brake pedal apply with the engine running followed by a proper shutdown without applying the brake pedal.

3. Transmission in PARK, engine running, apply and release the brake pedal.

Note: The ignition must transition to the OFF position without pausing at ACCESSORY and without applying the brake pedal. This ensures

that the brake modulator and high pressure accumulator relief occurs. This process will take approximately 1-2 minutes.

4. Ignition OFF, key removed from the ignition, wait 2 minutes.

Note: The ignition must remain in the ON position with the engine OFF during the following steps.

5. Ignition ON, brake pedal released, verify the following EBCM scan tool parameters are within the specified range: