Test J: The Stoplamps Are Inoperative

PINPOINT TEST J: THE STOPLAMPS ARE INOPERATIVE

J1-J3:

J3-J4:

Normal Operation
The stoplamp switch is supplied battery voltage through circuit 10 (LG/RD) from the smart junction box (SJB). When the brake pedal is applied, the stoplamp switch allows voltage to flow through circuit 511 (LG). Circuit 511 (LG) sends voltage to the high mounted stoplamp and SJB, which in turn provides voltage to the LH and RH rear lamps.

Possible Causes
- circuit 10 (LG/RD) open
- circuit 511 (LG) open
- stoplamp switch
- SJB