2010 Cadillac Truck Escalade RWD V8-6.0L Hybrid Page 826
3. Ignition ON, verify that a test lamp illuminates between the B+ circuits listed below and ground.
* Terminal 1
* Terminal 25
瀚慖f the test lamp does not illuminate, test the appropriate circuit for a short to ground or an open/high resistance.
4. If all circuits test normal, replace the EBCM.
Repair Instructions
Perform the Diagnostic Repair Verification (See: Verification Tests) after completing the diagnostic procedure.
Control Module References (See: Testing and Inspection/Programming and Relearning) for EBCM replacement, setup, and programming
Brake Boost Solenoid
DTC C012F, C12A7, C12DC, or C12DD
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 C012F 00
- Brake Boost Solenoid Valve Circuit
DTC C012F 0E
- Brake Boost Solenoid Valve Circuit Shorted
DTC C12A7
- Brake Boost Solenoid Valve Circuit Performance
DTC C12DC
- Brake Boost Solenoid Valve Circuit Malfunction
DTC C12DD
- Brake Boost Solenoid Valve Circuit Shorted
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
* The ignition is ON.
* Ignition voltage is greater than 10 volts.
Conditions for Setting the DTC
C012F 00, C12A7, C12DC
Solonoid feedback current greater than 25% of commanded current.
C012F 0E, C12DD
Solonoid feedback current greater than 50% of requested current.
Action Taken When the DTC Sets
* The EBCM disables the ABS/traction control system (TCS)/vehicle stability enhancement system (VSES) for the duration of the ignition
