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Inspection Procedure 9




Inspection Procedure 9: One of the position light, the taillight, the rear side marker light or the license plate light does not illuminate.






















TECHNICAL DESCRIPTION (COMMENT)

If one of the position light, the taillight, the rear side marker light or the license plate light does 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
- 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. Bulb check.

Check the bulb(s) of the light that does not illuminate.

Q. Is the check result normal?

YES Go to Step 2.
NO : Replace the bulb(s) of the light that does not illuminate.
STEP 2. Check headlight assembly connector A-43 (position light: LH) or A-61 (position light: RH), rear combination light connector D-19 (taillight/rear side marker light: LH) or D-13 (taillight/rear side marker light: RH), license plate light connector G-19
(LH) or G-05 (RH) for loose, corroded or damaged terminals, or terminals pushed back in the connector.

Q. Is headlight assembly connector A-43 (position light: LH) or A-61 (position light: RH), rear combination light connector D-19 (taillight/rear side marker light: LH) or D-13 (taillight/rear side marker light: RH), license plate light connector G-19 (LH) or G-05 (RH) in good condition?

YES Go to Step 3.
NO Repair or replace the damaged component(s). Harness Connector Inspection.
STEP 3. Resistance measurement at headlight assembly connector A-43
(position light: LH) or A-61 (position light: RH), rear combination light connector D-19 (taillight/rear side marker light: LH) or D-13 (taillight/rear side marker light: RH), license plate light connector G-19 (LH) or G-05 (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-43 (position light: LH) or A-61 (position light: RH) (terminal 4) and body ground.
- Measure the resistance between rear combination light connector D-19 (taillight/rear side marker light: LH) or D-13 (taillight/rear side marker light: RH) (terminal 4) and body ground.
- Measure the resistance between license plate light connector G-19 (LH) or G-05 (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 5.

NO Go to Step 4.

STEP 4. Check the wiring harness between headlight assembly connector, rear combination 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 (position light: LH) connector A-43 (terminal 4) and the body ground.
- Check the wiring harness between headlight assembly (position light: RH) connector A-61 (terminal 4) and the body ground.
- Check the wiring harness between rear combination light (taillight/rear side marker light: LH) connector D-19 (terminal 4) and the body ground.
- Check the wiring harness between rear combination light (taillight/rear side marker light: RH) connector D-13 (terminal 4) and the body ground.
- Check the wiring harness between license plate light (LH) connector G-19 (terminal 1) and the body ground.
NOTE:
Also check intermediate connector G-23 for loose, corroded, or damaged terminals, or terminals pushed back in the connector. If intermediate connector G-23 is damaged, repair or replace the connector as described in Harness Connector Inspection Harness Connector Inspection .

- Check the wiring harness between license plate light (RH) connector G-05 (terminal 1) and the body ground.
NOTE:
Also check intermediate connector G-23 for loose, corroded, or damaged terminals, or terminals pushed back in the connector. If intermediate connector G-23 is damaged, repair or replace the connector as described in Harness Connector Inspection Harness Connector Inspection .

Q. Is the wiring harness between headlight assembly connector, rear combination light connector or license plate light connector and the body ground in good condition?

YES Go to Step 7.
NO Repair the wiring harness.
STEP 5. Check ETACS-ECU connector C-403 or C-413 for loose, corroded or damaged terminals, or terminals pushed back in the connector.

Q. Is ETACS-ECU connector C-403 or C-413 in good condition?

YES Go to Step 6.
NO Repair the damaged parts.
STEP 6. Check wiring harness between headlight assembly connector, rear combination light connector or license plate light connector and ETACS-ECU connector.

Check the power supply line for open circuit or short circuit.

- Check the wiring harness between headlight assembly (position light: LH) connector A-43 (terminal 3) and ETACS-ECU connector C-403 (terminal 3).
- Check the wiring harness between headlight assembly (position light: RH) connector A-61 (terminal 3) and ETACS-ECU connector C-403 (terminal 7).
- Check the wiring harness between rear combination light (taillight/rear side marker light: LH) connector D-19 (terminal 2) and ETACS-ECU connector C-413 (terminal 10).
- Check the wiring harness between rear combination light (taillight/rear side marker light: RH) connector D-13 (terminal 2) and ETACS-ECU connector C-413 (terminal 13).
- Check the wiring harness between license plate light (LH) connector G-19 (terminal 2) and ETACS-ECU connector C-413 (terminal 10).
NOTE:
Also check intermediate connectors G-23 for loose, corroded, or damaged terminals, or terminals pushed back in the connector. If intermediate connector G-23 is damaged, repair or replace the connector as described in Harness Connector Inspection Harness Connector Inspection .

- Check the wiring harness between license plate light (RH) connector G-05 (terminal 2) and ETACS-ECU connector C-413 (terminal 10).
NOTE:
Also check intermediate connectors G-23 for loose, corroded, or damaged terminals, or terminals pushed back in the connector. If intermediate connector G-23 is damaged, repair or replace the connector as described in Harness Connector Inspection Harness Connector Inspection .

Q. Is the wiring harness between headlight assembly connector, rear combination light connector or license plate light connector and ETACS-ECU connector in good condition?

YES Go to Step 7.
NO Repair the wiring harness.
STEP 7. Retest the system.

Check that the position light, taillight, rear side marker light, or license plate light illuminate normally.

Q. Do the position light, taillight, rear side marker light, or license plate light work normally?

YES (The light illuminate normally.) : The trouble can be an intermittent malfunction How to Cope With Intermittent Malfunctions).
NO [When the position light does not illuminate] : Replace the position light socket.
NO [When the rear combination light (taillight/rear side marker light) do not illuminate] : Replace the rear combination light unit.
NO [When the license plate light does not illuminate] : Replace the license plate light socket.
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