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Home >> Chevrolet >> 2012 >> Camaro LS, Automatic Trans >> Repair and Diagnosis >> Brakes >> Traction Control >> Antilock Brake 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 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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