Test A: Both High Beams Are Inoperative

PINPOINT TEST A: BOTH HIGH BEAMS ARE INOPERATIVE

Normal Operation
The SJB sends a reference signal to the multifunction switch through circuit CLF17 (WH/OG). When the headlamp switch is in the HEADLAMPS ON position and the multifunction switch is placed in the HIGH BEAM position, the signal is routed to ground through circuit GD111 (BK/BU), indicating a high beam request. The SJB then energizes the high beam relay (integrated into the SJB) which supplies voltage to the headlamps through circuit CLF08 (YE/VT).

This pinpoint test is intended to diagnose the following:
- Fuse
- Wiring, terminals or connectors
- Multifunction switch
- SJB

A1:

A1-A4:

A4-A6: