Test B: The High Beams Are Inoperative

PINPOINT TEST B: THE HIGH BEAMS ARE INOPERATIVE

B1-B4:

B4-B6:

Normal Operation
When the headlamp switch is placed in the HEADLAMPS ON position, the smart junction box (SJB) monitors the high beam request circuit from the multifunction switch through circuit CLF17 (WH/OG). When the multifunction switch is placed in the HIGH BEAM position, the signal is routed to ground through circuit GD116 (BK/VT). The SJB then supplies voltage to the high beam headlamps through circuit CLS08 (VT/GN).

Possible Causes
- Circuit CLF17 (WH/OG) open
- Circuit CLS08 (VT/GN) open
- Circuit GD116 (BK/VT) open
- Multifunction switch
- SJB