Inspection Procedure 2: The luggage room lamp does not illuminate normally.

caution

Whenever the ECU is replaced, ensure that the power supply circuit, the earth circuit and the communication circuit are normal.

OPERATION

The ETACS-ECU illuminates and extinguishes the luggage room lamp in accordance with the input signals below.

Ignition switch (IG1)
Key reminder switch
Door switches
Front door lock actuator (driver’s side)

COMMENTS ON TROUBLE SYMPTOM

If this does not work normally, the above switch input circuit(s), luggage room lamp assembly, or ETACS-ECU may have a problem.

PROBABLE CAUSES

Malfunction of the key reminder switch
Malfunction of door switch
Malfunction of the front door lock actuator (driver’s side)
Malfunction of luggage room lamp assembly
Malfunction of the ETACS-ECU
Damaged harness wires and connectors

DIAGNOSIS PROCEDURE

STEP 1. Front room lamp operation check

Check that the front room lamp illuminates and extinguishes normally.

Q. Is the check result normal?

Go to Step 2.

Refer to Inspection Procedure "The front room lamp does not illuminate normally

STEP 2. Luggage room lamp bulb check

Check that the luggage room lamp bulb is normal.

Q. Is the check result normal?

Go to Step 3.

Replace the luggage room lamp bulb.

STEP 3. Check of open circuit in power supply lines between the luggage room lamp connector and the fusible link.

Q. Is the check result normal?

Go to Step 4.

Repair the connector(s) or wiring harness.

STEP 4. Check of open circuit in ROOM lines between the luggage room lamp connector and the ETACS-ECU connector.

Q. Is the check result normal?

Go to Step 5.

Repair the connector(s) or wiring harness.

STEP 5. Retest the system

Check that the luggage room lamp illuminates/extinguishes normally.

Q. Is the check result normal?

The trouble can be an intermittent malfunction (Refer to GROUP 00 - How to use Troubleshooting/inspection Service Points - How to Cope with Intermittent Malfunction

Replace the ETACS-ECU.