Test A: The High Beams Are Inoperative
PINPOINT TEST A: THE HIGH BEAMS ARE INOPERATIVENormal 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 GD138 (BK/WH). The SJB then energizes the high beam relay (integral to the SJB) which supplies voltage to the headlamps (and flash-to-pass lamps, if equipped) through circuit CLF08 (YE/VT).
This pinpoint test is intended to diagnose the following:
- Fuse
- Wiring, terminals or connectors
- Multifunction switch
- SJB
A1-A4:
A4-A6:
