Test J: One Or More Stoplamps Are Inoperative

PINPOINT TEST J: ONE OR MORE STOPLAMPS ARE INOPERATIVE

J1:

J2-J4:

J4-J6:

J6-J8:

J8-J10:

J10-J12:

Normal Operation
Under normal operation, when the brake pedal is applied, the SJB then sends voltage to the high mounted stoplamps through circuit 1374 (TN/LB). The SJB then sends voltage to the rear stoplamps through:
- Freestyle, Five Hundred: (LH) circuit 1363 (WH/RD) and (RH) circuit 1365 (GY/LB).
- Montego: circuit 1374 (TN/LB).

Ground for the stoplamps is supplied through circuit 1205 (BK).

Possible Causes
- An open in circuit 1205 (BK), 1363 (WH/RD), 1365 (GY/LB) or 1374 (TN/LB)
- A short to ground in circuit 1363 (WH/RD), 1365 (GY/LB) or 1374 (TN/LB)
- Lamp
- Smart junction box (SJB)