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Inspection Procedure 9




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






















TECHNICAL DESCRIPTION (COMMENT)

When one of the position light, side marker light or license plate light does not illuminate, 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 check.

Q. Does the rear combination light illuminate normally?

YES Go to Step 2.
NO Refer to Symptom Chart.
STEP 2. Check headlight assembly connector A-56 (position light:RH) or A-37 (position light:LH), license plate light connector F-07 (RH) or F-03 (LH), rear combination light connector D-14 (LH) or D-09 (RH), or rear side marker light connector F-10 (RH) or F-16 (LH) for loose, corroded or damaged terminals, or terminals pushed back in the connector.

Q. Is headlight assembly connector A-56 (position light:RH) or A-37 (position light:LH), license plate light connector F-07 (RH) or F-03 (LH), rear combination light connector D-14
(LH) or D-09 (RH), or rear side marker light connector F-10 (RH) or F-16 (LH) in good condition?

YES Go to Step 3.
NO Repair the damaged parts.
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-56
(position light:RH) or A-37 (position light:LH), license plate light connector F-07 (RH) or F-03 (LH), rear combination light connector D-14 (LH) or D-09 (RH), or rear side marker light connector F-10 (RH) or F-16 (LH).

(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-37 (position:LH), A-56 (position:RH) (terminal No. 6) and body ground.

- Measure the resistance between license plate light connector F-03 (LH), F-07 (RH) (terminal No. 1) and body ground.

- Measure the resistance between rear combination light connector D-14 (LH), D-09 (RH) (terminal No. 4) and body ground.

- Measure the resistance between rear side marker light connector F-16 (LH), F-10 (RH) (terminal No. 1) and body ground.
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 wiring harness between headlight assembly connector A-56 (position light:RH) or A-37 (position light:LH) (terminal No. 6),license plate light connector F-07 (RH) or F-03 (LH) (terminal No. 1), rear combination light connector D-14 (LH) or D-09
(RH) (terminal No. 4), or rear side marker light connector F-10 (RH) or F-16 (LH) (terminal No. 1) and the body ground.

Check the ground wires for open circuit.

NOTE:
Before the wiring harness check, check the intermediate connectors F-15 and F-18 [rear side marker light], or and repair that if necessary.

Q. Is the wiring harness between headlight assembly connector A-56 (position light:RH) or A-37 (position light:LH) (terminal No. 6),license plate light connector F-07 (RH) or F-03
(LH) (terminal No. 1), rear combination light connector D-14 (LH) or D-09 (RH) (terminal No.
4), or rear side marker light connector F-10 (RH) or F-16 (LH) (terminal No. 1) 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 [headlight assembly]
or C-311 [license plate light and rear side marker light]
for loose, corroded or damaged terminals, or terminals pushed back in the connector.

Q. Is ETACS-ECU connector C-304 [headlight assembly]
or C-311 [license plate light and rear side marker light]
in good condition?

YES Go to Step 7.
NO Repair the damaged parts.
STEP 7. Check Wiring harness between headlight assembly connector A-56 (position light:RH) or A-37 (position light:LH) (terminal No. 4),license plate light connector F-07 (RH) or F-03 (LH) (terminal No. 2), rear combination light connector D-14 (LH) or D-09
(RH) (terminal No. 2), or rear side marker light connector F-10 (RH) or F-16 (LH) (terminal No. 2) and ETACS-ECU connector C-304 (terminal No. 7, 6) [headlight assembly], C-311 (terminal No. 10, 13) [license plate light and rear side marker light].

Check the output lines for open circuit.

NOTE:
Before the wiring harness check, check the intermediate connectors D-12 [license plate light], F-15 and F-18 [rear side marker light]
and repair that if necessary.

Q. Is the wiring harness between headlight assembly connector A-56 (position light:RH) or A-37 (position light:LH) (terminal No. 4),license plate light connector F-07 (RH) or F-03
(LH) (terminal No. 2), rear combination light connector D-14 (LH) or D-09 (RH) (terminal No.
2), or rear side marker light connector F-10 (RH) or F-16 (LH) (terminal No. 2) and ETACS-ECU connector C-304 (terminal No. 7, 6) [headlight assembly], C-311 (terminal No. 10, 13) [license plate light and rear side marker light]
in good condition?

YES Go to Step 8.
NO Repair the wiring harness.
STEP 8. Retest the system.

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

Q. Does the position light, front side marker 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 How to Cope With Intermittent Malfunctions).
NO [When the position light does not illuminate] : Replace the position light socket.
NO [When the front side marker lights do not illuminate] : Replace the front side marker light socket.
NO [When the license plate light does not illuminate] : Replace the license plate light socket.
NO [When the rear side marker lights do not illuminate] : Replace the rear side maker light socket.
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