C0131

DTC C0131

Diagnostic Instructions

* Perform the Diagnostic System Check - Vehicle (Initial Inspection and Diagnostic Overview) prior to using this diagnostic procedure.
* Review Strategy Based Diagnosis (Initial Inspection and Diagnostic Overview) for an overview of the diagnostic approach.
* Diagnostic Procedure Instructions (Initial Inspection and Diagnostic Overview) provides an overview of each diagnostic category.

DTC Descriptors
DTC C0131 00
- ABS Pressure Circuit

DTC C0131 5A
- ABS Pressure Circuit Plausibility Failure

Circuit/System Description

The electronic brake control module (EBCM) monitors the input of the brake pressure sensor for more accurate control during a vehicle stability enhancement system (VSES) event.

Conditions for Running the DTC

Ignition ON.

Conditions for Setting the DTC

C0131 00

The EBCM detects an internal pressure sensor are fault.

C0131 5A

The EBCM detects the 2 internal brake pressure sensor readings do not correlate.

Action Taken When the DTC Sets

* The EBCM disables the antilock brake system (ABS), traction control system (TCS) and vehicle stability enhancement system (VSES) for the duration of the ignition cycle.
* The EBCM sends a serial data message to illuminate the appropriate warning indicator/message.

Conditions for Clearing the DTC

* The condition for setting the DTC is no longer present.
* The EBCM clears the history DTC when a current DTC is not detected in 100 consecutive drive cycles.

Reference Information
Schematic Reference

Antilock Brake System Schematics (Electrical Diagrams)
Connector End View Reference

Component Connector End Views (Connector Views)
Description and Operation Reference

ABS Description and Operation (Description and Operation)
Electrical Information Reference

* Circuit Testing (Component Tests and General Diagnostics)
* Testing for Intermittent Conditions and Poor Connections (Component Tests and General Diagnostics)
* Wiring Repairs (Component Tests and General Diagnostics)
* Connector Repairs (Component Tests and General Diagnostics)

Scan Tool Reference

Control Module References (Programming and Relearning) for scan tool information

Circuit/System Verification

Verify DTC C0131 is not set.

If the DTC is set, replace the brake pressure modulator valve (BPMV) and verify the DTC does not reset. If the DTC resets replace the EBCM.

Repair Instructions

Perform the Diagnostic Repair Verification (Verification Tests) after completing the diagnostic procedure.

* Brake Pressure Modulator Valve Replacement (With JL4) (Service and Repair)Brake Pressure Modulator Valve Replacement (With JL4, LNF) (Service and Repair)Brake Pressure Modulator Valve Replacement (Without JL4) (Service and Repair)
* Control Module References (Programming and Relearning) for EBCM replacement, setup, and programming