LT
LT
LT
LT
Lighting
Lighting
Lighting
Lighting System
System
System
System
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71
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Diagnosis
Diagnosis
Diagnosis
Diagnosis and
and
and
and Testing
Testing
Testing
Testing
Fault
Fault
Fault
Fault diagnosis
diagnosis
diagnosis
diagnosis
10. Rear fog lamp failed with front fog lamp and rear fog lamp turned on simultaneously
Step Operation
Yes
No
1
Turn on low beam and front fog lamp and then turn on rear fog lamp switch.
Does the switch indicator operate normally?
Go to Step 2. Go to Step 6.
2
Check rear fog lamp and wiring harness connector. Ensure voltage and
grounding is normal.
Go to Step 3. Go to Step 11.
３
Check connector between instrument panel and rear body harness. Is the
measured voltage normal?
Go to Step 4. Go to Step 5.
４
Check rear body harness from connector and rear fog lamp . Repair when
necessary.
5
Check instrument panel harness from rear fog lamp switch to connector.
Repair when necessary.
6
Remove the rear fog lamp switch. Measure the voltage of wiring harness. Is
the voltage normal?
Go to Step 7. Go to Step 8.
7 Replace the rear fog lamp switch. Is the rear fog lamp normal? Go to Step 3.
8 Replace the relay. Is the rear fog lamp normal? Go to Step 9.
9 Check the instrument panel harness from relay to switch. Is it normal?? Go to Step 10.
10
Check the instrument panel harness connected to rear fog lamp relay. Repair
when necessary.
11 Replace rear fog lamp .
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