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Home >> Chevrolet >> 2013 >> Camaro LS, Automatic Trans >> Repair and Diagnosis >> Brakes >> Antilock Brake System And Traction Control System >> Diagnostic Information and Procedures >> DTC C0131 >> Circuit/System Verification

Circuit/System Verification

NOTE:

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

  1. Ignition ON.
  2. Verify that DTC C0277 or C0890 is not set.
    • If either DTC is not set 
  3. Verify the B22 Brake Pedal Position Sensor or the brake pedal is not binding causing residual brake pressure to be detected.
    • If a condition is found 

      Repair or replace the applicable component.

    • If a condition is not found 
  4. Verify the scan tool Electronic Brake Control Module Brake Pedal Position Sensor parameter changes between Active and Inactive when applying and releasing the brake pedal.
    • If the parameter changes 
  5. Perform the Brake Pressure Modulator Valve Pressure Sensor Calibration .
  6. Verify that DTC C0131 does not set while operating the vehicle under the Conditions for Running the DTC.
    • If DTC C0131 sets 
    1. Replace the Q5 Brake Pressure Modulator.
    2. Verify the DTC does not set while operating the vehicle within the Conditions for Running the DTC.
      • If the DTC sets, replace the K17 Electronic Brake Control Module.
      • If the DTC does not set
    3. All OK.
    • If DTC C0131 does not set 
  7. Engine Running.
  8. Verify the scan tool Brake Pressure Sensor parameter is between 0.45-0.55 V when the brake pedal is not applied.
    • If not between 0.45-0.55 V 
    1. Replace the Q5 Brake Pressure Modulator.
    2. Verify the DTC does not set while operating the vehicle under the Conditions for Running the DTC.
      • If the DTC sets, replace the K17 Electronic Brake Control Module.
      • If the DTC does not set
    3. All OK.
    • If between 0.45-0.55 V 
  9. Verify the scan tool Brake Pressure Sensor parameter is between 0.45-4.50 V with the brake pedal applied.
    • If not between 0.45-4.50 V 
    1. Replace the Q5 Brake Pressure Modulator.
    2. Verify the DTC does not set while operating the vehicle under the Conditions for Running the DTC.
      • If the DTC sets, replace the K17 Electronic Brake Control Module.
      • If the DTC does not set
    3. All OK.
    • If between 0.45-4.50 V 
  10. All OK.
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