Inspection Procedure 9
Inspection Procedure 9: Any of position light, side marker lights or the license plate light do not illuminate.Position Lights, License Plate Lights And Rear Side Marker Lights Circuit (Part 1):
Position Lights, License Plate Lights And Rear Side Marker Lights Circuit (Part 2):
TECHNICAL DESCRIPTION (COMMENT)
If any position light, side marker light or license plate light do not illuminate normally, the harness, connector(s), or bulb(s) may have a problem, or the fuse may be burned out.
TROUBLESHOOTING HINTS
- Malfunction of bulbs
- Malfunction of rear combination light
- Malfunction of rear combination light harness
- Malfunction of license plate light
- Malfunction of headlight
- Malfunction of rear side maker light
- The wiring harness or connectors may have loose, corroded, or damaged terminals, or terminals pushed back in the connector
DIAGNOSIS
Required Special Tools:
- MB992006: Extra fine probe
- MB991223: Harness set
STEP 1. Rear combination light (taillight) check.
Q: Does the rear combination light (taillight) illuminate normally?
YES : Go to Step 2.
NO : Refer to Inspection Procedure 1
STEP 2. Check headlight assembly connector A-31 (position light-LH) or A-47 (position light-RH), rear side marker light connector F-18 (LH) or F-07 (RH) or license plate light connector F-13 (LH) or F-11 (RH) for loose, corroded or damaged terminals, or terminals pushed back in the connector.
Q: Is headlight assembly connector A-31 (position light-LH) or A-47 (position light-RH), rear side marker light connector F-18 (LH) or F-07 (RH) or license plate light connector F-13 (LH) or F-11 (RH) in good condition?
YES : Go to Step 3.
NO : Repair or replace the damaged component(s). Refer to general (electrical), Harness Connector Inspection.
STEP 3. Bulb check.
Check the bulb(s) of the light that does not illuminate.
Q: Is the check result normal?
YES : Go to Step 4.
NO : Replace the bulb(s) of the light that does not illuminate.
STEP 4. Resistance measurement at headlight assembly connector A-31 (position light-LH) or A-47 (position light-RH), rear side marker light connector F-18 (LH) or F-07 (RH) or license plate light connector F-13 (LH) or F-11 (RH).
1. Disconnect the connector, and measure at the wiring harness side.
2. Measure the resistance between the connector of light which does not illuminate and the body ground.
- Measure the resistance between headlight assembly connector A-31 (LH) or A-47 (RH) (terminal 6) and body ground.
- Measure the resistance between rear side marker light connector F-18 (LH) or F-07 (RH) (terminal 1) and body ground.
- Measure the resistance between license plate light connector F-13 (LH) or F-11 (RH) (terminal 1) and body ground.
OK: The measured value should be continuity exists (2 ohms or less).
Q: Does the measured resistance value correspond with this range?
YES : Go to Step 6.
NO : Go to Step 5.
STEP 5. Check the wiring harness between headlight assembly connector, rear side marker light connector or license plate light connector and the body ground.
Check the ground line for open circuit.
- Check the wiring harness between headlight assembly (LH) connector A-31 (terminal 6) and the body ground.
- Check the wiring harness between headlight assembly (RH) connector A-47 (terminal 6) and the body ground.
- Check the wiring harness between rear side marker light (LH) connector F-18 (terminal 1) and the body ground.
NOTE: Also check intermediate connector F-23 for loose, corroded, or damaged terminals, or terminals pushed back in the connector. If intermediate connector F-23 is damaged, repair or replace the connector as described in general (electrical), Harness Connector Inspection.
- Check the wiring harness between rear side marker light (RH) connector F-07 (terminal 1) and the body ground.
NOTE: Also check intermediate connector F-23 for loose, corroded, or damaged terminals, or terminals pushed back in the connector. If intermediate connector F-23 is damaged, repair or replace the connector as described in general (electrical) Harness Connector Inspection.
- Check the wiring harness between license plate light (LH) connector F-13 (terminal 1) and the body ground.
NOTE: Also check intermediate connector F-15 for loose, corroded, or damaged terminals, or terminals pushed back in the connector. If intermediate connector F-15 is damaged, repair or replace the connector as described in general (electrical), Harness Connector Inspection.
- Check the wiring harness between license plate light (RH) connector F-11 (terminal 1) and the body ground.
NOTE: Also check intermediate connector F-15 for loose, corroded, or damaged terminals, or terminals pushed back in the connector. If intermediate connector F-15 is damaged, repair or replace the connector as described in general (electrical), Harness Connector Inspection.
Q: Is the wiring harness between headlight assembly connector, rear side marker light connector or license plate light connector and the body ground in good condition?
YES : Go to Step 8.
NO : Repair the wiring harness.
STEP 6. Check ETACS-ECU connector C-304
Q: Is ETACS-ECU connector C-304
YES : Go to Step 7.
NO : Repair the damaged parts.
STEP 7. Check wiring harness between headlight assembly connector, rear side marker light connector or license plate light connector and ETACS-ECU connector.
Check the ground line for open circuit.
- Check the wiring harness between headlight assembly (LH) connector A-31 (terminal 4) and ETACS-ECU connector C-304 (terminal 3).
- Check the wiring harness between headlight assembly (RH) connector A-47 (terminal 4) and ETACS-ECU connector C-304 (terminal 7).
- Check the wiring harness between rear side marker light (LH) connector F-18 (terminal 2) and ETACS-ECU connector C-311 (terminal 10).
NOTE: Also check intermediate connectors D-14 and F-23 for loose, corroded, or damaged terminals, or terminals pushed back in the connector. If intermediate connector D-14 or F-23 is damaged, repair or replace the connector as described in general (electrical), Harness Connector Inspection.
- Check the wiring harness between rear side marker light (RH) connector F-07 (terminal 2) and ETACS-ECU connector C-311 (terminal 13).
NOTE: Also check intermediate connectors D-14 and F-23 and joint connector C-38 for loose, corroded, or damaged terminals, or terminals pushed back in the connector. If intermediate connector D-14 or F-23 or joint connector C-38 is damaged, repair or replace the connector as described in general (electrical), Harness Connector Inspection.
- Check the wiring harness between license plate light (LH) connector F-13 (terminal 2) and ETACS-ECU connector C-311 (terminal 10).
NOTE: Also check intermediate connectors D-14 and F-15 for loose, corroded, or damaged terminals, or terminals pushed back in the connector. If intermediate connector D-14 or F-15 is damaged, repair or replace the connector as described in general (electrical), Harness Connector Inspection.
- Check the wiring harness between license plate light (RH) connector F-11 (terminal 2) and ETACS-ECU connector C-311 (terminal 13).
NOTE: Also check intermediate connectors D-14 and F-15 for loose, corroded, or damaged terminals, or terminals pushed back in the connector. If intermediate connector D-14 or F-15 is damaged, repair or replace the connector as described in general (electrical), Harness Connector Inspection.
Q: Is the wiring harness between headlight assembly connector, rear side marker light connector or license plate light connector and ETACS-ECU connector in good condition?
YES : Go to Step 8.
NO : Repair the wiring harness.
STEP 8. Retest the system.
Check that the position light, rear side marker light, or license plate light illuminate normally.
Q: Do the position light, rear side marker light, or license plate light work normally?
YES (The light illuminate normally at both high and low beams.) : The trouble can be an intermittent malfunction (Refer to general (Body and Chassis) How to use Troubleshooting/inspection Service Points How to Cope with Intermittent Malfunction).
NO
NO
NO