Front Fog Light Circuit

LIGHTING (EXT): LIGHTING SYSTEM: Front Fog Light Circuit

Front Fog Light Circuit

DESCRIPTION

When both of the following conditions are met, the front fog lights come on:

- The low beam headlights are turned on using either automatic light control or manual operation, and the high beam headlights are off.

- The front fog light switch is on.

WIRING DIAGRAM





INSPECTION PROCEDURE

PROCEDURE

1. INSPECT FUSE (FR FOG)
(a) Remove the FR FOG fuse from the instrument panel junction block.
(b) Measure the resistance according to the value(s) in the table below.
Standard Resistance:






NG -- REPLACE FUSE
OK -- Continue to next step.

2. INSPECT FRONT FOG LIGHT RELAY




(a) Remove the front fog light relay.
(b) Measure the resistance according to the value(s) in the table below.
Standard Resistance:






NG -- REPLACE FRONT FOG LIGHT RELAY
OK -- Continue to next step.

3. CHECK HARNESS AND CONNECTOR (BATTERY - FRONT FOG LIGHT RELAY)




(a) Install the FR FOG fuse.
(b) Measure the voltage according to the value(s) in the table below.
Standard Voltage:






NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR
OK -- Continue to next step.

4. INSPECT HEADLIGHT DIMMER SWITCH ASSEMBLY




(a) Remove the headlight dimmer switch assembly.
(b) Measure the resistance according to the value(s) in the table below.
Standard Resistance:





(c) Reinstall the headlight dimmer switch assembly.
NG -- REPLACE HEADLIGHT DIMMER SWITCH ASSEMBLY
OK -- Continue to next step.

5. CHECK HARNESS AND CONNECTOR (FRONT FOG LIGHT RELAY - HEADLIGHT DIMMER SWITCH ASSEMBLY)
(a) Disconnect the E12 headlight dimmer switch assembly connector.




(b) Measure the resistance according to the value(s) in the table below.
Standard Resistance:






NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR
OK -- Continue to next step.

6. CHECK HARNESS AND CONNECTOR (HEADLIGHT DIMMER SWITCH ASSEMBLY - DAYTIME RUNNING LIGHT RELAY)
(a) Disconnect the E42 daytime running light relay connector.




(b) Measure the resistance according to the value(s) in the table below.
Standard Resistance:






NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR
OK -- Continue to next step.

7. CHECK HARNESS AND CONNECTOR (FRONT FOG LIGHT RELAY - FOG LIGHT ASSEMBLY)
(a) Disconnect the A18 fog light assembly LH connector and the A15 fog light assembly RH connector.




(b) Measure the resistance according to the value(s) in the table below.
Standard Resistance:






NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR
OK -- Continue to next step.

8. CHECK HARNESS AND CONNECTOR (FOG LIGHT ASSEMBLY - BODY GROUND)
(a) Measure the resistance according to the value(s) in the table below.





Standard Resistance:






NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR
OK -- PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE