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.
