Workshop Manuals Factory service & repair Vauxhall
Vauxhall Astra J07 · Brakes
07 · Brakes

DTC C0131

Make
Vauxhall
Model
Astra J
Section
Diagnostic Information and Procedures › Miscellaneous › DTC C0131
BrakesDTC 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 4B:  Traction Control System Pressure Circuit Calibration Not Learned

DTC C0131 5A:  Traction Control System Pressure Circuit Not Plausible

Diagnostic Fault Information

Circuit

Short to Ground

Open/High Resistance

Short to Voltage

Signal Performance

5V Reference

C0131 00

C0131 00

C0131 00

-

Signal

C0131 00

C0131 00

-

C0131 5A

Circuit/System Description

The brake pressure sensor is integral to the brake pressure modulator valve assembly. The electronic brake control module (EBCM) monitors the brake pressure sensor supply voltage and the signal voltage. The body control module (BCM) sends a serial data message when the brake pedal is applied.

Conditions for Running the DTC

Ignition ON.

Conditions for Setting the DTC

C0131 00

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

C0131 5A

    •  The EBCM detected an invalid or erratic brake pressure sensor signal.
    •  The brake pressure sensor signal is not plausible.

C0131 4B

The brake pressure sensor is not calibrated.

Action Taken When the DTC Sets

    •  The EBCM disables the traction control and stability control for the duration of the ignition cycle.
    •  The traction control/stability control-active indicator turns ON.

Conditions for Clearing the DTC

    •  A current DTC clears when the diagnostic runs and passes.
    •  The EBCM will turn OFF the indicator in the next ignition cycle.

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
    •  Wiring Repairs


Scan Tool Reference

Control Module References for scan tool information

Circuit/System Verification

Ignition ON, observe the scan tool Brake Pressure Sensor parameter. The reading should be 0 V, when the brake pedal is released and greater than 1 V, when the brake pedal is applied.

Circuit/System Testing

  1. Verify that DTC C0131 4B is not present.
    2. ⇒ If DTC C0131 4B is present, perform the Brake Pressure Modulator Valve Pressure Sensor Calibration .
  2. Replace the brake pressure modulator valve assembly and verify the DTC does not reset.
    3. ⇒ If the DTC resets replace the K17 Electronic Brake Control Module (EBCM).

Repair Instructions

Perform the Diagnostic Repair Verification after completing the diagnostic procedure.

    •  Control Module References for EBCM replacement, setup and programming

Parts & tools for this job For Vauxhall Astra

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