Pinpoint Test 3: The Stop Lamps Are On Continuously

PINPOINT TEST 3: THE STOPLAMPS ARE ON CONTINUOUSLY

Normal Operation

When the brake pedal is applied, the brake pedal position (BPP) switch routes voltage to the smart junction box (SJB), the high mounted stoplamp and the PCM through circuit (V/W). When the SJB detects the brake pedal is applied, the SJB provides voltage to the LH rear stoplamp through circuit (GY/BR) and the RH rear stoplamp through circuit (V/O).

- DTC B1485 (Brake Pedal Input Short to Battery) - an on-demand DTC that sets when the SJB detects a short to voltage from the BPP switch input circuit.
- DTC B2045 (Left Rear Stop Lamp Circuit Open) - an on-demand DTC that sets when the SJB detects a short to voltage from the LH rear stop/turn lamp voltage supply circuit.
- DTC B2047 (Right Rear Stop Lamp Circuit Open) - an on-demand DTC that sets when the SJB detects a short to voltage from the RH rear stop/turn lamp voltage supply circuit.

Possible Causes
- Wiring, terminals or connectors
- BPP switch
- PCM
- SJB

Diagnostic Procedure

Step 1-Step 5:

Step 6-Step 7: