Inspection Procedure 2: The Front Room Lamp does not Illuminate Normally.


caution Whenever the ECU is replaced, ensure that the input and output signal circuits are normal.


COMMENTS ON TROUBLE SYMPTOM


If the front room lamp do not illuminate, the wiring harness connector(s), the bulb or the fuse may be defective or burned out.

PROBABLE CAUSES



DIAGNOSIS PROCEDURE

STEP 1. Check that the rear room lamp and ignition key cylinder illumination lamp illuminates.
Check that the rear room lamp and ignition key cylinder illumination lamp illuminates normally.

Q. Is the check result normal?
Go to Step 2.
Refer to Inspection Procedure 1 "The interior lamps (front room ramp, rear room lamp and ignition ley cylinder illumination lamp) does not illuminate or extinguish normally ."

STEP 2. Retest the system.

Q. At which switch positions (DOOR or ON), the front room lamp does not illuminate?

The lamp does not illuminate at both the ON and DOOR positions. : Go to Step 3.
The lamp does not illuminate at the door position. : Go to Step 7.
The lamp does not illuminate at the ON position. : Replace the front room lamp.

STEP 3. Connector check: D-03 front room lamp connector


Q. Is the check result normal?

Go to Step 4.

Repair the defective connector.

STEP 4. Check the bulb.
Check whether the front room lamp bulb is normal.

Q. Is the check result normal?
Go to Step 5.
Replace the bulb(s) of the defective lamp.

STEP 5. Check the front room lamp.
Check whether the front room lamp is normal.

Q. Is the check result normal?
Go to Step 6.
Replace the front room lamp.

STEP 6. Check the wiring harness from D-03 front room lamp connector terminal No.1 to battery.




note Prior to the wiring harness inspection, check junction block connectors C-206 and C-213 repair if necessary.
Check the power supply line for open circuit.

Q. Is the check result normal?

The trouble can be an intermittent malfunction (Refer to GROUP 00 - How to Cope with Intermittent Malfunction ).

Repair the wiring harness.

STEP 7. Connector check: C-218 ETACS-ECU connector and D-03 front room lamp connector




Q. Is the check result normal?

Go to Step 8.

Repair the defective connector.

STEP 8. Check the wiring harness from C-218 ETACS-ECU connector terminal No.18 to D-03 front room lamp connector terminal No.2





note Prior to the wiring harness inspection, check junction block connector C-206 repair if necessary.
Check the input and output lines for open circuit.

Q. Is the check result normal?

The trouble can be an intermittent malfunction (Refer to GROUP 00 - How to Cope with Intermittent Malfunction ).

Repair the wiring harness.