Test I: The Stoplamps Are Inoperative

PINPOINT TEST I: THE STOPLAMPS ARE INOPERATIVE

I1-I3:

I4:

Normal Operation
The stoplamp switch is supplied voltage from the smart junction box (SJB) through circuit 10 (LG/RD). When the brake pedal is applied, voltage is routed to the stoplamps through circuit 810 (RD/LG).

Possible Causes
- Fuse
- Circuit 10 (LG/RD) open
- Circuit 810 (RD/LG) open
- Stoplamp switch
- SJB