Test A: Both High Beams Are Inoperative

PINPOINT TEST A: BOTH HIGH BEAMS ARE INOPERATIVE

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 CLF02 (GY/BN). When the multifunction switch is placed in the HIGH BEAM position, the signal is routed to ground through circuit GD114 (BK/BU). The SJB then energizes the high beam relay (integral to 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: