[54C] SMART WIRING SYSTEM (SWS) USING SWS MONITOR <Hong Kong spec.> - - SYMPTOM PROCEDURES - FOG LAMP - INSPECTION PROCEDURE M-3: One of the fog lamps does not illuminate.PRINT PAGE / INDEX / PRIOR / NEXT
INSPECTION PROCEDURE M-3: One 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-24 <RH> or A-19 <LH> front fog lamp connector, or C-05 <front fog lamp indicator lamp> combination meter connector
Q: Is the check result normal?
YES:  Go to Step 2.
NO:  Repair the connector.
Step 2. Check the bulbs of the fog lamps or the fog lamp indicator lamp.
Check the bulb(s) of the defective lamp.
Q: Is the check result normal?
YES:  Go to Step 3.
NO:  Replace the bulb(s) of the defective lamp.
Step 3. Measure the resistance at A-24 <RH> or A-19 <LH> front fog lamp connector, or C-05 front fog lamp indicator lamp> combination meter connector.
  1. Disconnect the connector, and measure at the wiring harness side.
  1. Check the resistance between the front fog lamp connector and body earth.
    • Resistance between A-24 <RH> front fog lamp connector terminal No.2 and body earth
    • Resistance between A-19 <LH> front fog lamp connector terminal No.2 and body earth
    • Resistance between C-05 <front fog lamp indicator lamp> combination meter connector terminal No.12 and body earth
    OK: 2 Ω or less
Q: Is the check result normal?
YES:  Go to Step 5.
NO:  Go to Step 4.
Step 4. Check the wiring harness from A-24 <RH> or A-19 <LH> front fog lamp connector terminal No.2, or C-05 <front fog lamp indicator lamp> combination meter connector terminal No.12 to body earth.
  • Check the earth wires for open circuit.
Q: Is the check result normal?
YES:  The trouble can be an intermittent malfunction (Refer to GROUP 00 - How to Cope with Intermittent Malfunction ).
NO:  Repair the wiring harness.
Step 5. Connector check: A-05X front fog lamp relay connector
Q: Is the check result normal?
YES:  Go to Step 6.
NO:  Repair the connector.
Step 6. Check the wiring harness from A-24 <RH> or A-19 <LH> front fog lamp connector terminal No.1, or C-05 <front fog lamp indicator lamp> combination meter connector terminal No.7 to A-05X front fog lamp relay connector terminal No.4.
NOTE: Prior to the wiring harness inspection, check intermediate connector C-116 <front fog lamp indicator lamp>, and repair if necessary.
  • Check the output lines for open circuit.
Q: Is the check result normal?
YES:  Go to Step 7.
NO:  Repair the wiring harness.
Step 7. Retest the system.
Check that the front fog lamp and the front fog lamp indicator lamp illuminate normally.
Q: Is the check result normal?
The lamps illuminate normally at both high and low beams.:  The trouble can be an intermittent malfunction (Refer to GROUP 00 - How to Cope with Intermittent Malfunction ).
The front fog lamps do not illuminate.:  Replace the front fog lamp(s).
The front fog lamp indicator lamp does not illuminate.:  Replace the combination meter.
[54C] SMART WIRING SYSTEM (SWS) USING SWS MONITOR <Hong Kong spec.> - - SYMPTOM PROCEDURES - FOG LAMP - INSPECTION PROCEDURE M-3: One of the fog lamps does not illuminate.PRINT PAGE / INDEX / PRIOR / NEXT
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