• | Perform the Diagnostic System Check - Vehicle prior to using this diagnostic procedure. |
• | Review Strategy Based Diagnosis for an overview of the diagnostic approach. |
• | Diagnostic Procedure Instructions provides an overview of each diagnostic category. |
The electronic brake control module (EBCM) uses input from the regenerative axle pressure sensor for more accurate control during a brake and vehicle stability enhancement system (VSES) event. The regenerative axle pressure sensor is internal to the brake pressure modulator valve (BPMV).
• | Ignition ON. |
• | Ignition voltage is greater than 10 volts. |
Internal sensor failure is detected.
A short to battery is detected on the sensor signal circuit.
A short to ground or open is detected signal circuit.
Signal is erratic and changes faster than physically allowed.
A DIC message and/or a warning indicator may be displayed.
• | 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. |
Antilock Brake System Schematics
Control Module References for scan tool information
Verify that DTC C012C, C121A, C128C, C128F, C12B9, C12BA, C12BB or C12F7 is not set.
⇒ | If DTC is set replace EBCM/brake pressure modulator valve (BPMV) assembly.. |
Perform the Diagnostic Repair Verification after completing the diagnostic procedure.
• | Control Module References for EBCM replacement, setup, and programming |