Front Fog Light Circuit: Description

WARNING: This page is about a different car, the 2007 Lexus ES 350. However, it is still accessible from the selected car via links, so may be relevant.

When all of the following conditions are met, the front fog lights come on.

Low beam headlights are ON.
Front fog light switch is ON.
High beam headlights are OFF.

When any of the following conditions is met, the front fog lights turn off.

Front fog light switch is OFF.
Low beam headlights are OFF.
High beam headlights are ON.

HINT:

Before performing troubleshooting of the front fog light system, check that the taillight system and headlight system are normal.
If only a front fog light on one side does not illuminate, inspect the bulb or wire harness that is related to the bulb.
If both right and left front fog lights do not illuminate, read the front fog light switch value in the data list and perform the front fog light relay active test to determine if the malfunction exists on either the switch side or the relay side.