2010 Cadillac Truck Escalade RWD V8-6.0L Hybrid Page 776

2010 Cadillac Truck Escalade RWD V8-6.0L Hybrid Page 776

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).

Conditions for Running the DTC

* Ignition ON.

* The ignition voltage is greater than 10 V.

Conditions for Setting the DTC

C012D 00, C128D, C012D 11 or C128A

Internal sensor failure is detected.

C012D 01 or C12BD

A short to battery is detected on the sensor signal circuit.