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DTC C0131

DTC C0131

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 Descriptors

DTC C0131 00

Traction Control System Pressure Circuit Malfunction

DTC C0131 5A

Traction Control System Pressure Circuit Not Plausible

Circuit/System Description

The electronic brake control module monitors the brake pressure sensor, which is integrated in the unit with the brake pressure modulation valve. When the brake pedal is actuated, the body control module (BCM) sends a serial data message to the electronic brake control module (EBCM) concerning the brake pedal position. The EBCM compares the relationship between brake pedal position and the brake pressure recorded by the brake pressure sensor. This information is used to check the vehicle when electronic stability control takes place.

Conditions for Running the DTC

Ignition ON.

Conditions for Setting the DTC

C0131 00

The electronic brake control module detects that the brake pressure is not within the specified range.


C0131 5A

• The electronic brake control module recorded an invalid or uneven brake pressure.

• The brake pressure sensor signal is not reasonable with regard to the acceleration/deceleration of the vehicle.

• The brake pressure sensor signal offset is out of specified range.


Action Taken When the DTC Sets


• The traction control/stability control-active indicator turns ON.

• The electronic brake control module disconnects the traction control and stability control during the ignition cycle.


Conditions for Clearing the DTC


• The DTC is cleared if a diagnostic test is run and passes.

• The DTC in the history is cleared after 40 consecutive fault-free ignition cycles have taken place.


Reference Information

Schematic Reference

Antilock Brake System Schematics

Connector End View Reference

Component Connector End Views

Description and Operation

ABS Description and Operation

Electrical Information Reference


• Circuit Testing

• Connector Repairs

• Testing for Intermittent Conditions and Poor Connections

• Wiring Repairs


Scan Tool Reference

Control Module References for scan tool information

Circuit/System Verification

Note

Troubleshoot all other brake light-related DTCs or symptoms before starting this troubleshooting procedure.



1. Ignition ON

2. Confirm that DTC C0131 is not set.

3. If this DTC is set:

3.1. Execute Brake pressure modulation valve pressure sensor, calibration .

3.2. Verify that the DTC is not set.

3.3. If the DTC is set, replace Q5 brake pressure modulation valve.

3.4. If the DTC is not set:

3.5. All OK

4. If the DTC is not set:

5. All OK


Repair Instructions

Perform the Diagnostic Repair Verification after completing the repair.


• Brake Pressure Modulator Valve Replacement

• Control Module References for replacement, programming and setup of the electronic brake control module.