Circuit/System Verification

Ignition ON.
Verify the scan tool Brake Pedal Applied parameter changes between Active and Inactive while pressing and releasing the brake pedal.
- If the parameter does not change
  Refer to Brake Pedal Position Sensor Malfunction .
- If the parameter changes
Verify the left brake lamp turns ON and OFF when commanding the Left Brake Lamp ON and OFF with a scan tool.
- If the left brake lamp does not turn ON and OFF
  Refer to Stop Lamps Malfunction .
- If the left brake lamp turns ON and OFF
Verify the right brake lamp turns ON and OFF when commanding the Right Brake Lamp ON and OFF with a scan tool.
- If the right brake lamp does not turn ON and OFF
  Refer to Stop Lamps Malfunction .
- If the right brake lamp turns ON and OFF
Verify the center high mounted stop lamp turns ON and OFF when commanding the Center Brake Lamp ON and OFF with a scan tool.
- If the center high mounted stop does not turn ON and OFF
  Refer to Center High Mount Stop Lamp Malfunction .
- If the center high mounted stop turns ON and OFF
All OK.