Inspection Procedure L-1

L-1: Dome Light: Dome Light Does Not Illuminate.

Dome Light Drive Circuit:

Connectors:

CIRCUIT OPERATION
The dome light dimming function and the keyless entry system answerback function illuminate the dome light when the dome light switch is at "door controlled operation position."

TECHNICAL DESCRIPTION (COMMENT)
If the dome light dose not illuminate at all, the dome light bulb may be burned out, or the power supply circuit or the ETACS-ECU may be defective.

TROUBLESHOOTING HINTS
- Malfunction of the dome light
- Malfunction of the ETACS-ECU
- Damaged harness wires or connectors

DIAGNOSIS

Required Special Tools:
- MB991223: Test Harness Set

STEP 1. Check the trouble symptom.
Q: Does the dome light Illuminate when the dome light switch is turned to "ON" position?

YES: Go to Step 2.

NO: Go to Step 3.







STEP 2. Check the dome light connector D-06 and ETACS-ECU connectors C-86 for damage.
Q: Are dome light connector D-06 and ETACS-ECU connectors C-86 in good condition?

YES: Go to Step 3.

NO: Repair or replace them. Refer to Harness Connector Inspection. The dome lights should illuminate normally.







STEP 3. Check the harness wire between dome light connector D-06 and ETACS-ECU connectors C-86.
Q: Is the harness wire between dome light connector D-06 and ETACS-ECU connectors C-86 in good condition?

YES: Replace the ETACS-ECU. The dome lights should illuminate normally.

NO: Repair it. The dome lights should illuminate normally.