Test B: Both Low Beams Are Inoperative
PINPOINT TEST B: BOTH LOW 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 in the LOW BEAM position, the voltage is routed through circuit 13 (RD/BK) to the central junction box (CJB) fuses 25 (10A) (LH headlamp) and 23 (10A) (RH headlamp). After passing through the fuses, voltage is then routed through circuits 160 (DB/WH) (LH headlamp) and 161 (DG/OG) (RH headlamp) to the low beam headlamps. Circuit 57 (BK) is the ground circuit for the headlamps.
This pinpoint test is intended to diagnose the following:
- Wiring, terminals or connectors
- Multifunction switch
- CJB