Circuit/System Testing
- Verify that DTC C0131 4B is not set.
- If DTC C0131 4B is set, perform the Brake Pressure Modulator Valve Pressure Sensor Calibration .
- Replace the Q5 brake pressure modulator valve assembly and verify the DTC does not reset.
- If the DTC resets replace the K17 Electronic Brake Control Module (EBCM).