Diagnosis Procedure

REAR FOG LAMP CIRCUIT


Diagnosis Procedure

1.CHECK REAR FOG LAMP BULB
Check the applicable lamp bulb.
Is the bulb normal?
YES - GO TO 2.
NO - Replace the bulb.
2.CHECK REAR FOG LAMP OUTPUT VOLTAGE
CONSULT-III ACTIVE TEST
1. Turn the ignition switch OFF.
2. Disconnect the rear fog lamp connector.
3. Turn the ignition switch ON.
4. Select "RR FOG LAMP" of BCM (HEAD LAMP) active test item.
5. With operating the test items, check voltage between BCM harness connector and the ground.





Is the measurement value normal?
YES - GO TO 3.
NO - Replace BCM.
3.CHECK REAR FOG LAMP OPEN CIRCUIT
1. Turn the ignition switch OFF.
2. Disconnect BCM connector.
3. Check continuity between BCM harness connector and rear fog lamp harness connector.





Does continuity exist?
YES - GO TO 4.
NO - Repair the harnesses or connectors.
4.CHECK REAR FOG LAMP SHORT CIRCUIT
Check for continuity between BCM harness connector and the ground.





Does continuity exist?
YES - GO TO 5.
NO - Repair the harnesses or connectors.
5.CHECK REAR FOG LAMP GROUND OPEN CIRCUIT
Check for continuity between rear fog lamp harness connector and the ground.





Does continuity exist?
YES - Replace the rear fog lamp.
NO - Repair the harnesses or connectors.