Service Information

Orlando

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 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

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 Testing

Note: Diagnose all other brake lamp DTCs or Symptoms prior to performing this diagnostic procedure.

Ignition ON.
Verify that DTC C0131 4B is not set.

⇒	*If DTC C0131 4B is set*

Refer to Brake Pressure Modulator Valve Pressure Sensor Calibration .

⇓	*If DTC C0131 4B is not set*

Replace the brake pressure modulator valve assembly and verify the DTC does not reset.

⇒	*If DTC resets*

Replace the K17 Electronic Brake Control Module.

⇓	*If DTC does not reset*

All OK.

Repair Instructions

Perform the Diagnostic Repair Verification after completing the repair.

•	Brake Pressure Modulator Valve Replacement

•	Control Module References for EBCM replacement, programming and setup