INSPECTION PROCEDURE O-4: The door-ajar warning lamp does not illuminate/extinguish normally.

CAUTION

Whenever the ECU is replaced, ensure that the input and output signal circuits are normal.

OPERATION

The ETACS-ECU operates this function in accordance with all the door switch signals. If the door-ajar warning lamp does not work normally, the input signal circuits from all the door switches or the ETACS-ECU may be defective.

POSSIBLE CAUSES

All the door switches are defective.

Malfunction of the ETACS-ECU

Damaged harness wires and connectors

DIAGNOSIS PROCEDURE

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. SWS monitor data list

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

<Selected item> ETACS ECU

Driver's door: open

Item No.	Item name	Normal condition
Item 32	DR DOOR SW^*1	ON
Item 32	FRONT DOOR SW^*2	ON

NOTE:

^*1 : Except for Australia

^*2 : Vehicles for Australia

OK: Normal condition is displayed.

Q: Is the check result normal?

YES: Go to Step 3

.
NO: 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>

Step 3. Pulse check

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

System switch	Check condition
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?

YES: Go to Step 4

.
NO: Refer to Inspection Procedure P-14 "All the door switch signals are not received <LH drive vehicles>

." Refer to Inspection Procedure P-14 "All the door switch signals are not received <RH drive vehicles>

Step 4. Connector check: C-05 combination meter connector

Q: Is the check result normal?

YES: Go to Step 5

.
NO: Repair the defective connector.

Step 5. Check the door-ajar warning lamp bulb.

Check the door-ajar warning lamp bulb.

Q: Is the check result normal?

YES: Go to Step 6

.
NO: Replace the door-ajar warning lamp bulb.

Step 6. Connector check: C-217 ETACS-ECU connector

Q: Is the check result normal?

YES: Go to Step 7

.
NO: Repair the defective connector.

Step 7. Check the wiring harness from C-217 ETACS-ECU connector (terminal Nos.53 and 71) to C-05 combination meter connector (terminal Nos.20 and 21).

Q: Is the check result normal?

YES: Go to Step 8

.
NO: Repair the wiring harness.

Step 8. Retest the system.

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

Replace the ETACS-ECU.

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.