Circuit/System Verification

NOTE:

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

Ignition ON.
Verify that DTC C0277 or C0890 is not set.
- If either DTC is set
  Refer to DTC C0277 or C0890 .
- If the DTC is not set
Verify the brake pedal position sensor or the brake pedal are not binding causing residual brake pressure to be detected.
- If a condition is found
  Repair or replace the appropriate component.
- If a condition is not found
Verify the scan tool Electronic Brake Control Module BPP Signal parameter changes between Applied and Released while applying and releasing the brake pedal.
- If the parameter does not change between Applied and Released
  Refer to Symptoms - Lighting .
- If the parameter changes between Applied and Released
All OK, refer to Diagnostic Aids above.