INSPECTION PROCEDURE M-2: Any of the fog lamps does not illuminate.


caution Whenever the ECU is replaced, ensure that the input and output signal circuits are normal.


COMMENTS ON TROUBLE SYMPTOM
If any of the fog lamps do not illuminate, the wiring harness connector(s), the bulb or the fuse may be defective or burned out.

POSSIBLE CAUSES

  • Burned-out fog lamp bulb
  • Damaged harness wires and connectors

DIAGNOSIS PROCEDURE

Step 1. Connector check: A-32 fog lamp (RH) connector or A-24 fog lamp (LH) connector


Q. Is the check result normal?

Go to Step 2.

Repair the defective connector.

Step 2. Check the bulbs of the fog lamps lamp.
Check the bulb(s) of the defective lamp.

Q. Is the check result normal?
Go to Step 3.
Replace the bulb(s) of the defective lamp.

Step 3. Resistance measurement at the A-32 fog lamp (RH) connector or A-24 fog lamp (LH) connector.


(1)Disconnect the connector, and measure at the wiring harness side.

(2)Check the resistance between the lamp connector and body earth.

  • Resistance between A-32 fog lamp (RH) connector terminal No.1 and body earth
  • Resistance between A-24 fog lamp (LH) connector terminal No.1 and body earth
OK: 2 Ω or less

Q. Is the check result normal?

Go to Step 6.

Go to Step 4.

Step 4. Connector check: A-25 earth connector

Q. Is the check result normal?

Go to Step 5.

Repair the defective connector.

Step 5. Check the wiring harness from A-32 fog lamp (RH) connector or A-24 fog lamp (LH) connector terminal No.1 to A-25 earth connector terminal No.5 or No.2.



  • Check the earth wires for open circuit.

Q. Is the check result normal?

The trouble can be an intermittent malfunction (Refer to GROUP 00 - How to Cope with Intermittent Malfunction ).

Repair the wiring harness.

Step 6. Connector check: A-08X fog lamp relay connector

Q. Is the check result normal?

Go to Step 7.

Repair the defective connector.

Step 7. Check the wiring harness from A-32 fog lamp (RH) connector or A-24 fog lamp (LH) connector terminal No.2 to A-08X fog lamp relay connector terminal No.4.




  • Check the power supply line for open circuit.

Q. Is the check result normal?

Go to Step 8.

Repair the wiring harness.

Step 8. Retest the system.
Check that the fog lamp illuminate normally.

Q. Is the check result normal?
The trouble can be an intermittent malfunction (Refer to GROUP 00 - How to Cope with Intermittent Malfunction ).
Replace the fog lamp(s).