Inspection Procedure 3: 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.

COMMENTS ON TROUBLE SYMPTOM


If this does not work normally, the above switch input circuit(s), luggage room 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 room lamp.

Item No.
 Item name
 Normal condition
Item 228
 Dr door unlock
 ON
Item 254
 IG voltage
 Battery voltage
Item 256
 Dr door ajar switch
 Open
Item 257
 As door ajar switch
 Open
Item 258
 RR door ajar switch
 Open
Item 259
 RL door ajar switch
 Open
Item 260
 Trunk/gate trunk ajar switch
 Open
Item 264
 Handle lock switch
 Key in → Key out
OK: Normal conditions are displayed for all the items.

Q. Is the check result normal?

Normal conditions are displayed for all the items. : Go to Step 3.

Normal condition is not displayed for item No. 228. : Troubleshoot the ETACS-ECU. Refer to Inspection Procedure 4 "The front door lock actuator (driver’s side) signal is not received" .

Normal condition is not displayed for item No. 254. : Troubleshoot the ETACS-ECU. Refer to Inspection Procedure 2 "The ignition switch (IG1) signal is not received" .

Normal condition is not displayed for item No. 256. : Troubleshoot the ETACS-ECU. Refer to Inspection Procedure 5 "The front door switch (driver’s side) signal is not received" .

Normal condition is not displayed for item No. 257. : Troubleshoot the ETACS-ECU. Refer to Inspection Procedure 6 "The front door switch (passenger’s side) signal is not received" .

Normal condition is not displayed for item No. 258. : Troubleshoot the ETACS-ECU. Refer to Inspection Procedure 7 "The rear door switch (RH) signal is not received" .

Normal condition is not displayed for item No. 259. : Troubleshoot the ETACS-ECU. Refer to Inspection Procedure 8 "The rear door switch (LH) signal is not received" .

Normal condition is not displayed for item No. 260. : Troubleshoot the ETACS-ECU. Refer to Inspection Procedure 9 "Tailgate latch switch signal is not received" .

Normal condition is not displayed for item No. 264. : Troubleshoot the ETACS-ECU. Refer to Inspection Procedure 3 "Key reminder switch signal is not received" .

STEP 3. Connector check: F-02 luggage room lamp connector


Q. Is the check result normal?

Go to Step 4.

Repair the defective connector.

STEP 4. Luggage room lamp bulb check


Check that the luggage room lamp bulb is normal.

Q. Is the check result normal?

Go to Step 5.

Replace the luggage room lamp bulb.

STEP 5. Connector check: C-311 ETACS-ECU connector


Q. Is the check result normal?

Go to Step 6.

Repair the defective connector.

STEP 6. Wiring harness check between the F-02 luggage room lamp connector terminal No. 1/2 and the C-311 ETACS-ECU connector terminal No. 17/3



note Prior to the wiring harness inspection, check intermediate connector D-12, and repair if necessary.

Q. Is the check result normal?

Go to Step 7.

Repair the wiring harness.

STEP 7. 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.