Test J: The Stoplamps Are On Continuously

PINPOINT TEST J: THE STOPLAMPS ARE ON CONTINUOUSLY

J1:

J2-J9:

J10-J14:

Normal Operation - All Vehicles
When the brake pedal is applied, the stoplamp switch routes voltage to the smart junction box (SJB), the brake shift interlock actuator, the trailer electric brake controller, the four wheel drive (4WD) control module, the anti-lock brake system (ABS) module, and the powertrain control module (PCM) through circuit CCB08 (VT/WH). The voltage is then routed out of the SJB to the high mounted stoplamp through circuit CCB08 (VT/WH).

Normal Operation - Explorer, Explorer Sport Trac
When the SJB detects the brake pedal applied, the SJB provides voltage to the LH and RH rear stoplamps through circuits CLS18 (GY/BN) and CLS19 (VT/OG), respectively.

Normal Operation - Mountaineer
When the SJB detects the brake pedal applied, the SJB provides voltage to the LH and RH rear stoplamps through circuit CLS44 (VT/BN).

DTC B1446 - is an on-demand DTC that sets when the SJB detects a short to voltage from the brake pedal applied input circuit.

Possible Causes
- Circuit CCB08 (VT/WH) short to voltage
- Circuit CLS18 (GY/BN) short to voltage
- Circuit CLS19 (VT/OG) short to voltage
- Circuit CLS44 (VT/BN) short to voltage
- Stoplamp switch - Brake shift interlock actuator
- Trailer electric brake controller
- SJB
- 4WD control module
- ABS module
- PCM