Test J: The Stoplamps Are On Continuously
PINPOINT TEST J: THE STOPLAMPS ARE ON CONTINUOUSLYNormal Operation
When the brake pedal is applied, the stoplamp switch routes voltage to the smart junction box (SJB) and the high mounted stoplamp, the PCM, the ABS module and the trailer electric brake controller through circuit CLS17 (YE/GY). When the SJB detects the brake pedal applied, the SJB provides voltage to the LH and RH rear stoplamps, and the LH and RH trailer tow turn relays through circuits CLS18 (GY/BN) and CLS19 (VT/OG), respectively.
- DTC B1485 (Brake Pedal Input Short to Battery) - is an on-demand DTC that sets when the SJB detects a short to voltage from the stoplamp switch input circuit.
- DTC B2045 (Left Rear Stop Lamp Circuit Open) - is an on-demand DTC that sets when the SJB detects a short to voltage on the LH rear stop/turn lamp voltage supply circuit.
- DTC B2047 (Right Rear Stop Lamp Circuit Open) - is an on-demand DTC that sets when the SJB detects a short to voltage on the RH rear stop/turn lamp voltage supply circuit.
This pinpoint test is intended to diagnose the following:
- Wiring, terminals or connectors
- Stoplamp switch
- Trailer electric brake controller
- ABS module
- PCM
- SJB
J1-J8:
J9-J10:
