Circuit/System Verification

NOTE:

Diagnose all other stop lamp DTCs or Symptoms prior to performing this diagnostic procedure.

Verify that DTC C0131 4B is not set.
- If the DTC is set
  Perform the Brake Pressure Modulator Valve Pressure Sensor Calibration .
- Go to next step: If the DTC is not set
Verify the scan tool Brake Pressure Sensor parameter changes from 0 V to 1 V when the brake pedal is applied.
- If the Brake Pressure Sensor parameter does not change
  Replace the K17 Electronic Brake Control Module with the Brake Pressure Modulator Valve.
- Go to next step: If the Brake Pressure Sensor parameter changes
All OK.