Test C: Both High Beams Are Inoperative
PINPOINT TEST C: BOTH HIGH BEAMS ARE INOPERATIVENormal Operation
The multifunction switch receives voltage from the headlamp switch through circuit 15 (RD/YE) when the headlamp switch is in the HEADLAMPS ON position. When the multifunction switch is placed in the HIGH BEAM position, voltage is routed to the high beam relay coil, located in the central junction box (CJB), through circuit 275 (YE). Circuit 57 (BK) is the ground circuit for the high beam relay coil.
When the high beam relay coil receives battery voltage from circuit 275 (YE), the high beam relay energizes. Battery voltage received from within the CJB is then routed to circuit 12 (LG/BK), through CJB fuse 35 (20A), to the high beam headlamps.
This pinpoint test is intended to diagnose the following:
- Fuse
- Wiring, terminals or connectors
- High beam relay
- Multifunction switch
- CJB
C1-C4:
C4-C6:
C7-C9:
