Test S: The Fog Lamps Are On Continuously

PINPOINT TEST S: THE FOG LAMPS ARE ON CONTINUOUSLY

S1-S5:

Normal Operation
When the fog lamp switch is activated, the headlamp switch routes the voltage to the fog lamp relay coil through circuit 188 (WH/BK). The fog lamp relay coil ground is supplied through the high beam headlamp bulbs on circuit 12 (LG/BK). When the fog lamp relay is energized, voltage is routed to the fog lamps through circuit 478 (TN/OG).

Possible Causes
- Circuit 188 (WH/BK) short to voltage
- Circuit 478 (TN/OG) short to voltage
- Fog lamp relay
- Headlamp switch
- CJB
- Daytime running lamps (DRL) system