Test A: Both Headlamps Are Inoperative

PINPOINT TEST A: BOTH HEADLAMPS ARE INOPERATIVE

A1-A3:

A3-A5:

A6:

Normal Operation
The smart junction box (SJB) provides voltage to the multifunction switch and the headlamp switch through circuits 196 (DB/OG) and 1033 (RD/YE), respectively. When the headlamp switch is placed in the HEADLAMPS ON position, the voltage is routed to the multifunction switch through circuit 164 (VT/LB).

Possible Causes
- Fuse
- Circuit 1033 (RD/YE) open
- Circuit 164 (VT/LB) open
- Headlamp switch
- Multifunction switch
- SJB