Step 1. Check the operation of the room lamp.

Check that the room lamps illuminate and extinguish normally.

Q: Is the check result normal?

YES:  Go to Step 2.
NO:  Refer to Inspection Procedure O-1 "The front or rear room lamp does not illuminate or extinguish <vehicles without keyless entry system> ." Or refer to Inspection Procedure O-2 "The front or rear room lamp does not illuminate or extinguish <vehicles with keyless entry system>."

Step 2. Pulse check

Check the input signals below, which are related to the door-ajar warning lamp.

System switch	Check condition
Driver's door switch	Driver's door is opened while all the other doors are closed.
All of the door switches	A door is opened when all the doors are closed

OK: The MUT-II/III sounds or the voltmeter needle fluctuates.

Q: Is the check result normal?

All the signals are received normally.:  Go to Step 3.
The driver's door switch signal is not received.:  Refer to Inspection Procedure P-4 "The driver's door switch signal is not received <LH drive vehicles>." Refer to Inspection Procedure P-4 "The driver's door switch signal is not received <RH drive vehicles>."
All the door switch signals are not received.:  Refer to Inspection Procedure P-12 "All the door switch signals are not received <LH drive vehicles>." Refer to Inspection Procedure P-12 "All the door switch signals are not received <RH drive vehicles>."

Step 3. Connector check: C-05 combination meter connector

Q: Is the check result normal?

YES:  Go to Step 4.
NO:  Repair the defective connector.

Step 4. Check the door-ajar warning lamp bulb.

Check the door-ajar warning lamp bulb.

Q: Is the check result normal?

YES:  Go to Step 5.
NO:  Replace the door-ajar warning lamp bulb.

Step 5. Connector check: C-219 ETACS-ECU connector

Q: Is the check result normal?

YES:  Go to Step 6.
NO:  Repair the defective connector.

Step 6. Check the wiring harness from C-219 ETACS-ECU connector terminal Nos.53 and 71 to C-05 combination meter connector terminal Nos.21 and 22.

Q: Is the check result normal?

YES:  Go to Step 7.
NO:  Repair the wiring harness.

Step 7. Retest the system.

Replace the ETACS-ECU, and then check that the door-ajar warning lamp illuminates/extinguishes normally.

1. Replace the ETACS-ECU.

2. Check that the door-ajar warning lamp illuminates/extinguishes normally.

Q: Is the check result normal?

YES:  The trouble can be an intermittent malfunction (Refer to GROUP 00 - How to Cope with Intermittent Malfunction ).
NO:  Replace the combination meter.