STEP 4. Using scan tool (M.U.T.-IIISE), read the DTC again.
Check again if DTC B1E1C is set in the ETACS-ECU.(1) Erase the DTC.
(2) Disconnect connector (a).- High-mounted stoplight connector
- Rear combination light (Stop: RH) connector
- Rear combination light (Stop: LH) connector
(3) Turn the ignition switch from "LOCK" (OFF) position to "ON" position.
(4) Depress the brake pedal.
(5) Check if DTC B1E1C is set.
(6) Repeat steps (1) to (5) for parts (b) to (c) to determine a fault cause.
Is the DTC set?
Replace the ETACS-ECU. Replace a defective light (the rear combination light unit or the high-mounted stoplight assembly).