Inspection Procedure 3: The luggage compartment lamp does not illuminate normally.


caution
  • Before replacing the ECU, ensure that the power supply circuit, the earth circuit and the communication circuit are normal.
  • When the ETACS-ECU of vehicles without KOS is replaced, the encrypted code of the ignition key needs to be registered to the ETACS-ECU. (If the encrypted code is not registered, the engine cannot be started. Register the encrypted code as described in Immobilizer System - How to Register Key ID .)

OPERATION


The ETACS-ECU illuminates and extinguishes the luggage compartment lamp in accordance with the input signals from tailgate lock actuator <vehicles without electric tailgate> or tailgate latch <vehicles with electric tailgate>.

COMMENTS ON TROUBLE SYMPTOM


If this does not work normally, the tailgate lock actuator <vehicles without electric tailgate> or tailgate latch <vehicles with electric tailgate> input circuit, luggage compartment lamp, or ETACS-ECU may have a problem.

PROBABLE CAUSES



DIAGNOSIS PROCEDURE


STEP 1. M.U.T.-III diagnosis code


Check if diagnosis code is set to the ETACS-ECU.

Q. Is the diagnosis code set?

Troubleshoot the ETACS-ECU. Refer to .

Go to Step 2.

STEP 2. M.U.T.-III data list


Use the ETACS-ECU service data to check the signals related to the operation of luggage compartment lamp.

Item No.
 Item name
 Normal condition
Item 260
 Gate ajar switch
 Open
OK: Normal condition is displayed.

Q. Is the check result normal?

Go to Step 3.

Troubleshoot the ETACS-ECU. Refer to Inspection Procedure 9 "The tailgate lock actuator <vehicles without electric tailgate> or tailgate latch <vehicles with electric tailgate> signal is not received" .

STEP 3. Luggage compartment lamp bulb check


Check that the luggage compartment lamp bulb is normal.

Q. Is the check result normal?

Go to Step 4.

Replace the luggage compartment lamp bulb.

STEP 4. Check of open circuit in (LP+1, LP+2, LP+3&LP+4) line between the luggage compartment lamp connector and ETACS-ECU connector.


Q. Is the check result normal?

Go to Step 5.

Repair the connector(s) or wiring harness.

STEP 5. Check of open circuit in GLP- line between the luggage compartment lamp connector and ETACS-ECU connector.


Q. Is the check result normal?

Go to Step 6.

Repair the connector(s) or wiring harness.

STEP 6. Check of open circuit in earth line between the luggage compartment lamp connector and body earth.


Q. Is the check result normal?

Replace the luggage compartment lamp, and then go to Step 7.

Repair the connector(s) or wiring harness.

STEP 7. Retest the system


Check that the luggage compartment lamp illuminates and 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.