Inspection Procedure K-3

Flasher Timer: The Right or Left Turn-signal Light does not Illuminate.

Turn-signal Light Circuit Part 1:

Turn-signal Light Circuit Part 2:

TECHNICAL DESCRIPTION (COMMENT)
If the right or left turn-signal light does not illuminate, their bulb may be defective.

TROUBLESHOOTING HINTS
- Malfunction of the turn-signal light bulb
- Damaged harness wires or connectors

DIAGNOSIS

Required Special Tool:
- MB991223: Test Harness Set

STEP 1. Check the hazard warning light.

Q: Which turn-signal light does not illuminate?

front turn-signal light (LH): Go to Step 2.

front turn-signal light (RH): Go to Step 8.

rear combination light (LH): Go to Step 14.

rear combination light (RH): Go to Step 20.

combination meter (LH): Go to Step 26.

combination meter (RH): Go to Step 28.

combination meter (both right and left): Go to Step 30.

LH side only: Refer to Inspection Procedure K-1 Turn-signal lights do not flash when the turn-signal light switch is turned on.

RH side only: Refer to Inspection Procedure K-1 Turn-signal lights do not flash when the turn-signal light switch is turned on.

Both LH and RH sides: Refer to Inspection Procedure K-2 Hazard warning lights do not flash when the hazard warning light switch is turned on.

STEP 2. Check the front turn-signal light bulb (LH).

1. Remove the front turn-signal (LH) light bulb.
2. Check that the front turn-signal light bulb (LH) is not broken.

Q: Is the front turn-signal (LH) light bulb in good condition?

YES: Go to Step 3.

NO: Replace the front turn-signal (LH) light bulb. Check that the turn-signal lights illuminate normally.

STEP 3. Measure at front combination light (LH) connector A-26 in order to check the ground circuit to the front combination light (LH).

1. Disconnect front combination light (LH) connector A-26, and measure at the wiring harness side.

2. Measure the resistance value between terminal 2 and ground.
- The measured value should be 2 ohm or less.

Q: Does the measured resistance value correspond with this range?

YES: Go to Step 6.

NO: Go to Step 4.

STEP 4. Check front combination light (LH) connector A-26 for damage.

Q: Is front combination light (LH) connector A-26 in good condition?

YES: Go to Step 5.

NO: Repair or replace the connector. Refer to Harness Connector Inspection. Check that the turn-signal lights illuminate normally.

STEP 5. Check the wiring harness between front combination light (LH) connector A-26 (terminal 2) and ground.

Q: Is the wiring harness between front combination light (LH) connector A-26 (terminal 2) and ground in good condition?

YES: Replace the front combination light socket (LH). Check that the turn-signal lights illuminate normally.

NO: Repair the wiring harness. Check that the turn-signal lights illuminate normally.

STEP 6. Check front combination light (LH) connector A-26 and ETACS-ECU connector C-119 for damage.

Q: Are front combination light (LH) connector A-26 and ETACS-ECU connector C-119 in good condition?

YES: Go to Step 7.

NO: Repair or replace the connector. Refer to Harness Connector Inspection. Check that the turn-signal lights illuminate normally.

STEP 7. Check the wiring harness between front combination light (LH) connector A-26 (terminal 1) and ETACS-ECU connector C-119 (terminal 14).

NOTE: Also check junction block connector C-112 and intermediate connector C-89. If junction block connector C-112 or intermediate connector C-89 is damaged, repair or replace the connector as described in Harness Connector Inspection.

Q: Is the wiring harness between front combination light (LH) connector A-26 (terminal 1) and ETACS-ECU connector C-119 (terminal 14) in good condition?

YES: Replace the front combination light socket (LH).Check that the turn-signal lights illuminate normally.

NO: Repair the wiring harness. Check that the turn-signal lights illuminate normally.

STEP 8. Check the front turn-signal light bulb (RH).

1. Remove the front turn-signal (RH) light bulb.
2. Check that the front turn-signal light bulb (RH) is not broken.

Q: Is the front turn-signal (RH) light bulb in good condition?

YES: Go to Step 9.

NO: Replace the front turn-signal (RH) light bulb. Check that the turn-signal lights illuminate normally.

STEP 9. Measure at front combination light (RH) connector A-32 in order to check the ground circuit to the front combination light (RH).

1. Disconnect front combination light (RH) connector A-32, and measure at the wiring harness side.

STEP 10. Check front combination light (RH) connector A-32 for damage.

Q: Is front combination light (RH) connector A-32 in good condition?

YES: Go to Step 11.

NO: Repair or replace the connector. Refer to Harness Connector Inspection. Check that the turn-signal lights illuminate normally.

STEP 11. Check the wiring harness between front combination light (RH) connector A-32 (terminal 2) and ground.

Q: Is the wiring harness between front combination light (RH) connector A-32 (terminal 2) and ground in good condition?

YES: Replace the front combination light socket (RH).Check that the turn-signal lights illuminate normally.

NO: Repair the wiring harness. Check that the turn-signal lights illuminate normally.

STEP 12. Check front combination light (RH) connector A-32 and ETACS-ECU connector C-119 for damage.

Q: Are front combination light (RH) connector A-32 and ETACS-ECU connector C-119 in good condition?

YES: Go to Step 13.

NO: Repair or replace the connector. Refer to Harness Connector Inspection. Check that the turn-signal lights illuminate normally.

STEP 13. Check the wiring harness between front combination light (RH) connector A-32 (terminal 1) and ETACS-ECU connector C-119 (terminal 9).

NOTE: Also check junction block connector C-112 and intermediate connector C-94. If junction block connector C-112 or intermediate connector C-94 is damaged, repair or replace the connector as described in Harness Connector Inspection.

Q: Is the wiring harness between front combination light (RH) connector A-32 (terminal 1) and ETACS-ECU connector C-119 (terminal 9) in good condition?

YES: Replace the front combination light socket (RH). Check that the turn-signal lights illuminate normally.

NO: Repair the wiring harness. Check that the turn-signal lights illuminate normally.

STEP 14. Check the rear turn-signal light bulb (LH).

1. Remove the rear turn-signal (LH) light bulb.
2. Check that the rear turn-signal light bulb (LH) is not broken.

Q: Is the rear turn-signal (LH) light bulb in good condition?

YES: Go to Step 15.

NO: Replace the rear turn-signal (LH) light bulb. Check that the turn-signal lights illuminate normally.

STEP 15. Measure at rear combination light (LH) connector F-17 in order to check the ground circuit to the rear combination light (LH).

1. Disconnect rear combination light (LH) connector F-17, and measure at the wiring harness side.

2. Measure the resistance value between terminal 5 and ground.
- The measured value should be 2 ohm or less.

Q: Does the measured resistance value correspond with this range?

YES: Go to Step 18.

NO: Go to Step 16.

STEP 16. Check rear combination light (LH) connector F-17 for damage.

Q: Is rear combination light (LH) connector F-17 in good condition?

YES: Go to Step 17.

NO: Repair or replace the connector. Refer to Harness Connector Inspection. Check that the turn-signal lights illuminate normally.

STEP 17. Check the wiring harness between rear combination light (LH) connector F-17 (terminal 5) and ground.

Q: Is the wiring harness between rear combination light (LH) connector F-17 (terminal 5) and ground in good condition?

YES: Replace the rear combination light socket assembly (LH).Check that the turn-signal lights illuminate normally.

NO: Repair the wiring harness. Check that the turn-signal lights illuminate normally.

STEP 18. Check rear combination light (LH) connector F-17 and ETACS-ECU connector C-119 for damage.

Q: Are rear combination light (LH) connector F-17 and ETACS-ECU connector C-119 in good condition?

YES: Go to Step 19.

NO: Repair or replace the connector. Refer to Harness Connector Inspection. Check that the turn-signal lights illuminate normally.

STEP 19. Check the wiring harness between rear combination light (LH) connector F-17 (terminal 1) and ETACS-ECU connector C-119 (terminal 14).

NOTE: Also check junction block connector C-101. If junction block connector C-101 is damaged, repair or replace the connector as described in Harness Connector Inspection.

Q: Is the wiring harness between rear combination light (LH) connector F-17 (terminal 1) and ETACS-ECU connector C-119 (terminal 14) in good condition?

YES: Replace the rear combination light socket assembly (LH). Check that the turn-signal lights illuminate normally.

NO: Repair the wiring harness. Check that the turn-signal lights illuminate normally.

STEP 20. Check the rear turn-signal light bulb (RH).

1. Remove the rear turn-signal (RH) light bulb.
2. Check that the rear turn-signal light bulb (RH) is not broken.

Q: Is the rear turn-signal (RH) light bulb in good condition?

YES: Go to Step 21.

NO: Replace the rear turn-signal (RH) light bulb. Check that the turn-signal lights illuminate normally.

STEP 21. Measure at rear combination light (RH) connector F-09 in order to check the ground circuit to the rear turn-signal light (RH).

1. Disconnect rear combination light (RH) connector F-09, and measure at the wiring harness side.

STEP 22. Check rear combination light (RH) connector F-09 for damage.

Q: Is rear combination light (RH) connector F-09 in good condition?

YES: Go to Step 23.

NO: Repair or replace the connector. Refer to Harness Connector Inspection. Check that the turn-signal lights illuminate normally.

STEP 23. Check the wiring harness between rear combination light (RH) connector F-09 (terminal 5) and ground.

Q: Is the wiring harness between rear combination light (RH) connector F-09 (terminal 5) and ground in good condition?

YES: Replace the rear combination light socket assembly (RH). Check that the turn-signal lights illuminate normally.

NO: Repair the wiring harness. Check that the turn-signal lights illuminate normally.

STEP 24. Check rear combination light (RH) connector F-09 and ETACS-ECU connector C-119 for damage.

Q: Are rear combination light (RH) connector F-09 and ETACS-ECU connector C-119 in good condition?

YES: Go to Step 25.

NO: Repair or replace the connector. Refer to Harness Connector Inspection. Check that the turn-signal lights illuminate normally.

STEP 25. Check the wiring harness between rear combination light (RH) connector F-09 (terminal 1) and ETACS-ECU connector C-119 (terminal 9).

NOTE: Also check junction block connector C-101. If junction block connector C-101 is damaged, repair or replace the connector as described in Harness Connector Inspection.

Q: Is the wiring harness between rear combination light (RH) connector F-09 (terminal 1) and ETACS-ECU connector C-119 (terminal 9) in good condition?

YES: Replace the rear combination light socket assembly (RH).Check that the turn-signal lights illuminate normally.

NO: Repair the wiring harness. Check that the turn-signal lights illuminate normally.

STEP 26. Check combination meter connector C-41 and ETACS-ECU connector C-119 for damage.

Q: Are combination meter connector C-41 and ETACS-ECU connector C-119 in good condition?

YES: Go to Step 27.

NO: Repair or replace the connector. Refer to Harness Connector Inspection. Check that the turn-signal lights illuminate normally.

STEP 27. Check the wiring harness between combination meter connector C-41 (terminal 48) and ETACS-ECU connector C-119 (terminal 14).

NOTE: Also check junction block connector C-108. If junction block connector C-108 is damaged, repair or replace the connector as described in Harness Connector Inspection.

Q: Is the wiring harness between combination meter connector C-41 (terminal 48) and ETACS-ECU connector C-119 (terminal 14) in good condition?

YES: Replace the combination meter. Check that the turn-signal lights illuminate normally.

NO: Repair the wiring harness. Check that the turn-signal lights illuminate normally.

STEP 28. Check combination meter connector C-43 and ETACS-ECU connector C-119 for damage.

Q: Are combination meter connector C-43 and ETACS-ECU connector C-119 in good condition?

YES: Go to Step 29.

NO: Repair or replace the connector. Refer to Harness Connector Inspection. Check that the turn-signal lights illuminate normally.

STEP 29. Check the wiring harness between combination meter connector C-43 (terminal 14) and ETACS-ECU connector C-119 (terminal 9).

NOTE: Also check junction block connector C-108. If junction block connector C-108 is damaged, repair or replace the connector as described in Harness Connector Inspection.

Q: Is the wiring harness between combination meter connector C-43 (terminal 14) and ETACS-ECU connector C-119 (terminal 9) in good condition?

YES: Replace the combination meter. Check that the turn-signal lights illuminate normally.

NO: Repair the wiring harness. Check that the turn-signal lights illuminate normally.

STEP 30. Check combination meter connector C-43 for damage.

Q: Is combination meter connector C-43 in good condition?

YES: Go to Step 31.

NO: Repair or replace the connector. Refer to Harness Connector Inspection. Check that the turn-signal lights illuminate normally.

STEP 31. Check the wiring harness between combination meter connector C-43 (terminal 12) and ground.

NOTE: Also check joint connector C-78. If joint connector C-78 is damaged, repair or replace the connector as described in Harness Connector Inspection.

Q: Is the wiring harness between combination meter connector C-43 (terminal 12) and ground in good condition?

YES: Replace the combination meter. Check that the turn-signal lights illuminate normally.

NO: Repair the wiring harness. Check that the turn-signal lights illuminate normally.