Normal Operation
WARNING: This page is about a different car, the 2007 Mercury Mariner and 2007 Ford Escape. However, it is still accessible from the selected car via links, so may be relevant.
When the brake pedal is applied, the stoplamp switch routes voltage to circuit 511 (LG). Circuit 511 (LG) provides voltage to the high mounted stoplamp and the smart junction box (SJB). The SJB then provides voltage to the LH rear lamp through circuit 22 (LB/BK) (Escape, Mariner) or circuit 1728 (LB/OG) (Hybrid) and the RH rear lamp through circuit 810 (RD/LG). All the stoplamps are provided ground through circuit 57 (BK).
Possible Causes
- Circuit 22 (LB/BK) short to voltage
- Circuit 511 (LG) short to voltage
- Circuit 810 (RD/LG) short to voltage
- Circuit 1728 (LB/OG) short to voltage
- Stoplamp switch
- Speed control actuator
- Anti-lock brake system (ABS) module
- Powertrain control module (PCM)
- SJB