Inspection Procedure O-4: The luggage compartment 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 luggage compartment lamp does not turn on and off normally, wiring harness connector(s) or the bulb may be defective.

POSSIBLE CAUSES

  • Malfunction of the luggage compartment lamp bulbs
  • Damaged harness wires and connectors

DIAGNOSTIC PROCEDURE

Step 1. Pulse check
Check the input signals below, which are related to the luggage compartment lamp.
System switch
 Check condition
Driver’s door switch
 Driver’s door is opened while all the other doors are closed.
Passenger’s door switch
 Passenger’s door is opened while all the other doors are closed.
Rear door (RH) switch
 Rear door (RH) is opened while all the other doors are closed
Rear door (LH) switch
 Rear door (LH) door is opened while all the other doors are closed
Tailgate switch
 Tailgate is opened while all the other doors are closed
Driver’s door lock actuator switch
 When the driver’s door is unlocked or locked
Interior lamp ON switch
 When turned from OFF to ON
Interior lamp OFF switch
 When turned from ON to OFF
OK: The M.U.T.-III sounds or the voltmeter needle fluctuates.

Q. Is the check result normal?
All the signals are received normally. : Go to Step 2.
All the door switch signals are not received. : Refer to inspection procedure P-12 "All the door switch signals are not received ."
The driver’s door lock actuator switch signal is not received. : Refer to inspection procedure P-13 "The driver’s door lock actuator switch signal is not received <LH drive vehicles> or <RH drive vehicles> ."
The interior lamp switch signal is not received. : Refer to inspection procedure P-20 "The interior lamp "all on" or "all off" switch signal is not sent to the ETACS-ECU ."

Step 2. Connector check: G-12 luggage compartment lamp connector

Q. Is the check result normal?

Go to Step 3.

Repair the defective connector.

Step 3. Check the bulbs of the luggage compartment lamp.
Check that the luggage compartment lamp bulbs are not burned out.

Q. Is the check result normal?
Go to Step 4.
Replace the luggage compartment lamp bulb.

Step 4. Connector check: C-221 ETACS-ECU connector


Q. Is the check result normal?

Go to Step 5.

Repair the defective connector.

Step 5. Check the wiring harness from C-221 ETACS-ECU connector terminal No.52 to G-12 luggage compartment lamp connector terminal No.2.






note Prior to the wiring harness inspection, check intermediate connector C-16, G-14, and repair if necessary.

  • Check the earth wires for open circuit.

Q. Is the check result normal?

Go to Step 6.

Repair the wiring harness.

Step 6. Connector check: C-219 ETACS-ECU connector


Q. Is the check result normal?

Go to Step 7.

Repair the defective connector.

Step 7. Check the wiring harness from C-219 ETACS-ECU connector terminal No.6 to G-12 luggage compartment lamp connector terminal No.1.






note Prior to the wiring harness inspection, check intermediate connector G-14, junction block connector C-210, and repair if necessary.

  • Check the power supply line for open circuit.

Q. Is the check result normal?

Go to Step 8.

Repair the wiring harness.

Step 8. 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 Cope with Intermittent Malfunction ).
Replace the luggage compartment lamp.