Test B: The High Beams Are Inoperative

PINPOINT TEST B: THE HIGH BEAMS ARE INOPERATIVE

B1-B3:

B3-B5:

B6:

Normal Operation
The smart junction box (SJB) sends a voltage reference signal to the multifunction switch through circuit 1708 (LG/BK). When the multifunction switch is placed in the HIGH BEAM position, the signal is routed to ground through circuit 1205 (BK). When the SJB receives a request for the high beams, the SJB energizes an internal relay and voltage is routed to the high beams through circuit 1337 (VT/YE).

Possible Causes
- Fuse
- Circuit 1205 (BK) open
- Circuit 1337 (VT/YE) open
- Circuit 1708 (LG/BK) open
- Multifunction switch
- SJB