Inspection Procedure K-2

Interior Lamp: The Front Dome Light, Rear Dome Light or Luggage Compartment Light does not Illuminate or Go out Normally

Interior Lights And Luggage Compartment Light Circuit:

Connectors:

CIRCUIT OPERATION
The ETACS-ECU operates the dome light according to the following signals:
- ignition switch (IG1)
- key reminder switch
- front door switch
- all door switches
- driver's door lock actuator switch

TECHNICAL DESCRIPTION (COMMENT)
Is the dome light does not flash normally, a burned-out dome light bulb, the input circuits from the switches described in "CIRCUIT OPERATION", the power supply line to the switches or the ETACS-ECU may be defective. Alternatively, the delay-off function may be set to "0 second" by using the configuration function.

TROUBLESHOOTING HINTS
- Malfunction of the key reminder switch
- Malfunction of the door switch
- Malfunction of the driver's door lock actuator switch
- Malfunction of the dome light
- Malfunction of the ETACS-ECU
- Damaged harness wires or connectors

DIAGNOSIS

Required Special Tools:
- MB991223: Test Harness Set
- MB991502: Scan Tool (MUT-II)

STEP 1. Check which of the front dome light, the rear dome light or the luggage compartment light does not illuminate normally.

Q: Which of the front dome light, the rear dome light or the luggage compartment light fail to illuminate normally?
Front dome light does not illuminate normally : Go to Step 2.
rear dome Light: Go to Step 8.
luggage compartment light: Go to Step 14.

STEP 2. Check the front dome light bulb.

Q: Is the front dome light bulb in good condition?

YES: Go to Step 3.

NO: Replace the bulb. Check that the front dome light illuminates normally.




STEP 3. Measure at front dome light connector D-05 in order to check the ETACS-ECU line of the power supply to the front dome light.

1. Disconnect front dome light connector D-05, and measure at the wiring harness side.
2. Measure the voltage between terminal 1 and ground.
- The measured value should be approximately 12 volts (battery positive voltage).

Q: Does the measured voltage correspond with this range?

YES: Go to Step 6.

NO: Go to Step 4.







STEP 4. Check front dome light connectors D-05, C-226 and ETACS-ECU connector C-226 for damage.

Q: Are front dome light connector D-05 and ETACS-ECU connector C-226 in good condition?

YES: Go to Step 5.

NO: Repair or replace the connector. Refer to Harness Connector Inspection. Check that the front dome light illuminates normally.










STEP 5. Check the wiring harness between front dome light connector D-05 and ETACS-ECU connector C-226.

NOTE: Also check junction block connector C-218. If junction block connector C-218 is damaged, repair or replace the connector as described in Harness Connector Inspection.

Q: Is the wiring harness between front dome light connector D-05 and ETACS-ECU connector C-226 in good condition?

YES: No action to be taken.

NO: Repair the wiring harness. Check that the front dome light illuminates normally.







STEP 6. Check front dome light connectors D-05 and ETACS-ECU connector C-226 for damage.

Q: Are front dome light connector D-05 and ETACS-ECU connector C-226 in good condition?

YES: Go to Step 7.

NO: Repair or replace the connector. Refer to Harness Connector Inspection. Check that the front dome light illuminates normally.










STEP 7. Check the wiring harness between front dome light connector D-05 and ETACS-ECU connector C-226.

NOTE: Also check junction block connector C-218. If junction block connector C-218 is damaged, repair or replace the connector as described in Harness Connector Inspection.

Q: Is the wiring harness between front dome light connector D-05 and ETACS-ECU connector C-226 in good condition?

YES: Replace the ETACS-ECU. Check that the front dome light illuminates normally.

NO: Repair the wiring harness. Check that the front dome light illuminates normally.

STEP 8. Check the rear dome light bulb.

Q: Is the rear dome light bulb in good condition?

YES: Go to Step 9.

NO: Replace the bulb. Check that the rear dome lights illuminate normally.




STEP 9. Measure at rear dome light connector D-07 in order to check the ETACS-ECU line of the power supply to the rear dome light.

1. Disconnect rear dome light connector D-07, and measure at the wiring harness side.
2. Measure the voltage between terminal 1 and ground.
- The measured value should be approximately 12 volts (battery positive voltage).

Q: Does the measured voltage correspond with this range?

YES: Go to Step 12.

NO: Go to Step 10.







STEP 10. Check rear dome light connectors D-07 and ETACS-ECU connector C-226 for damage.

Q: Are rear dome light connector D-07 and ETACS-ECU connector C-226 in good condition?

YES: Go to Step 11.

NO: Repair or replace the connector. Refer to Harness Connector Inspection. Check that the rear dome lights illuminate normally.










STEP 11. Check the wiring harness between rear dome light connector D-07 and ETACS-ECU connector C-226.

NOTE: Also check junction block connector C-218. If junction block connector C-218 is damaged, repair or replace the connector as described in Harness Connector Inspection.

Q: Is the wiring harness between rear dome light connector D-07 and ETACS-ECU connector C-226 in good condition?

YES: No action to be taken.

NO: Repair the wiring harness. Check that the rear dome lights illuminate normally.







STEP 12. Check rear dome light connectors D-07 and ETACS-ECU connector C-226 for damage.

Q: Are rear dome light connector D-07 and ETACS-ECU connector C-226 in good condition?

YES: Go to Step 13.

NO: Repair or replace the connector. Refer to Harness Connector Inspection. Check that the rear dome lights illuminate normally.










STEP 13. Check the wiring harness between rear dome light connector D-07 and ETACS-ECU connector C-226.

NOTE: Also check junction block connector C-218. If junction block connector C-218 is damaged, repair or replace the connector as described in Harness Connector Inspection.

Q: Is the wiring harness between rear dome light connector D-07 and ETACS-ECU connector C-226 in good condition?

YES: No action to be taken.

NO: Repair the wiring harness. Check that the rear dome lights illuminate normally.

STEP 14. Check the luggage compartment light bulb.

Q: Is the luggage compartment bulb in good condition?

YES: Go to Step 15

NO: Replace the bulb. Check that the luggage compartment lights illuminate normally.




STEP 15. Measure at luggage compartment light connector F-02 in order to check the ETACS-ECU line of the power supply to the luggage compartment light.

1. Disconnect luggage compartment light connector F-02, and measure at the wiring harness side.
2. Measure the voltage between terminal 1 and ground.
- The measured value should be approximately 12 volts (battery positive voltage).

Q: Does the measured voltage correspond with this range?

YES: Go to Step 18.

NO: Go to Step 16.







STEP 16. Check luggage compartment light connector F-02 and ETACS-ECU connector C-226 for damage.

Q: Are luggage compartment light connector F-02 and ETACS-ECU connector C-226 in good condition?

YES: Go to Step 17.

NO: Repair or replace the connector. Refer to Harness Connector Inspection. Check that the luggage compartment lights illuminate normally.










STEP 17. Check the wiring harness between luggage compartment light connector F-02 and ETACS-ECU connector C-226.

NOTE: Also check junction block connector C-217. If junction block connector C-217 is damaged, repair or replace the connector as described in Harness Connector Inspection.

Q: Is the wiring harness between luggage compartment light connector F-02 and ETACS-ECU connector C-226 in good condition?

YES: No action to be taken.

NO: Repair the wiring harness. Check that the luggage compartment lights illuminate normally.







STEP 18. Check the luggage compartment light switch.

Disconnect luggage compartment light switch connector F-09.
Then check the continuity between the switch and ground.

Q: Is the luggage compartment light switch in good condition?

YES: Go to Step 19.

NO: Replace the luggage compartment light switch. Check that the luggage compartment lights illuminate normally.




STEP 19. Check luggage compartment light connector F-02 and luggage compartment light switch connector F-09 for damage.

Q: Are luggage compartment light connector F-02 and luggage compartment light switch connector F-09 in good condition?

YES: Go to Step 20.

NO: Repair or replace the connector. Refer to Harness Connector Inspection. Check that the luggage compartment lights illuminate normally.




STEP 20. Check the wiring harness between luggage compartment light connector F-02 and luggage compartment light switch connector F-09.

Q: Is the wiring harness between luggage compartment light connector F-02 and luggage compartment light switch connector F-09 in good condition?

YES: No action to be taken.

NO: Repair the wiring harness. Check that the luggage compartment lights illuminate normally.