Test J: One Or More Stoplamps Are Inoperative

PINPOINT TEST J: ONE OR MORE STOPLAMPS ARE INOPERATIVE

J1:

J2-J4:

J4-J6:

J6-J8:

Normal Operation - Fusion
When the brake pedal is applied, the stoplamp switch routes voltage to the smart junction box (SJB). The voltage is then routed out of the SJB to the high mounted stoplamp through circuit CLS17 (YE/GY). When the SJB detects the brake pedal applied, the SJB provides voltage to the LH and RH rear stoplamps through circuit CLS18 (GY/BN) and circuit CLS19 (VT/OG), respectively. Ground for the rear stoplamps is provided through circuit GD171 (BK/GY).

Normal Operation - Milan, Zephyr
When the SJB detects the brake pedal applied, voltage is routed to the stoplamps through circuit CLS17 (YE/GY). Ground for the stoplamps is provided through circuit GD171 (BK/GY).

Possible Causes
- Circuit CLS17 (YE/GY) open or short to ground
- Circuit CLS18 (GY/BN) open or short to ground
- Circuit CLS19 (VT/OG) open or short to ground
- Circuit GD171 (BK/GY) open
- High mounted stoplamp
- Rear lamp assembly
- SJB