For 1990-2009 cars only
Diagnostic Instructions
| • | 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. |
DTC Descriptor
DTC C0131 00: ABS Pressure Circuit No Additional InformationCircuit/System Description
The electronic brake control module (EBCM) uses input from the brake pressure sensor for more accurate control during a Vehicle Stability Enhancement System (VSES) event.
Conditions for Running the DTC
| • | The ignition is ON. |
| • | Ignition voltage is greater than 8 volts. |
Conditions for Setting the DTC
| • | Brake signal does not correlate to pressure signal. |
| • | Signal is erratic and changes faster than physically allowed. |
Action Taken When the DTC Sets
| • | The Traction Control indicator turns ON. |
| • | The driver information center (DIC) displays the Service Stability System message. |
Conditions for Clearing the DTC
| • | The condition for setting the DTC is no longer present and the DTC is cleared with a scan tool. |
| • | The EBCM automatically clears the history DTC when a current DTC is not detected in 100 consecutive drive cycles. |
Reference Information
Schematic Reference
Antilock Brake System Schematics
Connector End View Reference
Description and Operation
Electrical Information Reference
Scan Tool Reference
Control Module References for EBCM
Circuit/System Testing
- Apply and release brake pedal. Verify brake lamps operate properly.
- Replace EBCM/brake pressure modulator valve (BPMV) assembly.
| ⇒ | If brake lamps do not operate properly, refer to Symptoms - Lighting Systems . |
Repair Instructions
Perform the Diagnostic Repair Verification after completing the diagnostic procedure.
Brake Pressure Modulator Valve Replacement for BPMV assembly replacement, setup, and programming.
