Front Fog Light Circuit

LIGHTING: LIGHTING SYSTEM: Front Fog Light Circuit

Front Fog Light Circuit

DESCRIPTION

When the front fog light switch is turned on, the front fog light relay illuminates the front fog lights.

WIRING DIAGRAM





INSPECTION PROCEDURE

PROCEDURE

1. CHECK WHETHER FRONT FOG LIGHTS ILLUMINATE
(a) Check whether the front fog lights illuminate.
Result:






B -- INSPECT BULB (FRONT FOG LIGHT BULB)
A -- Continue to next step.
2. INSPECT FUSE (FR FOG)
(a) Remove the FR FOG fuse from the main body ECU.
(b) Measure the resistance.
Standard resistance:
Below 1 Ohms
(c) Reinstall the FR FOG fuse.
NG -- REPLACE FUSE
OK -- Continue to next step.
3. INSPECT FRONT FOG LIGHT RELAY




(a) Remove the front fog light relay.
(b) Measure the resistance.
Standard resistance:





(c) Reinstall the front fog light relay.
NG -- REPLACE FRONT FOG LIGHT RELAY
OK -- Continue to next step.
4. CHECK HARNESS AND CONNECTOR (FUSE - FRONT FOG LIGHT RELAY)




(a) Remove the front fog light relay.
(b) Measure the voltage.
Standard voltage:





(c) Reinstall the front fog light relay.
NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR
OK -- Continue to next step.
5. INSPECT HEADLIGHT DIMMER SWITCH




(a) Remove the headlight dimmer switch.
(b) Inspect the front fog light switch.
(c) Measure the resistance.
Standard resistance:





(d) Reinstall the headlight dimmer switch.
NG -- REPLACE HEADLIGHT DIMMER SWITCH
OK -- Continue to next step.
6. CHECK HARNESS AND CONNECTOR (FRONT FOG LIGHT RELAY - HEADLIGHT DIMMER SWITCH)




(a) Disconnect the D4 headlight dimmer switch connector.
(b) Measure the voltage.
Standard voltage:





(c) Reconnect the headlight dimmer switch connector.
NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR
OK -- REPAIR OR REPLACE HARNESS OR CONNECTOR (HEADLIGHT DIMMER SWITCH - BODY GROUND)
7. INSPECT BULB (FRONT FOG LIGHT BULB)
(a) Remove the front fog light assembly.




(b) Apply battery voltage to the terminals and check that the front fog light illuminates.
Standard:





(c) Reinstall the front fog light assembly.
NG -- REPLACE BULB
OK -- Continue to next step.
8. CHECK HARNESS AND CONNECTOR (FRONT FOG LIGHT RELAY - FRONT FOG LIGHT ASSEMBLY)




(a) Disconnect the B9 and B10 front fog light assembly connectors.
(b) Measure the voltage.
Standard voltage:





(c) Reconnect the front fog light assembly connectors.
NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR
OK -- REPAIR OR REPLACE HARNESS OR CONNECTOR (FRONT FOG LIGHT ASSEMBLY - BODY GROUND)