Inspection Procedure 1

CIRCUIT OPERATION
- The key reminder switch sends a signal to the ETACS-ECU.

TECHNICAL DESCRIPTION (COMMENT)
- The ETACS-ECU accepts a signal from the theft-alarm system when the ignition key is removed.

TROUBLESHOOTING HINTS
- Malfunction of the key reminder switch
- Damaged harness wires and connectors

DIAGNOSIS

STEP 1. Check the key reminder switch for continuity.
1. Remove the instrument panel under cover.
2. Remove the steering column covers, upper and lower.
3. Disconnect the key reminder switch connector.







4. Operate the switch, and check the key reminder switch for continuity.
If there is continuity, go to Step 2.
If there is no continuity, replace the switch. Check that the malfunction is eliminated.




STEP 2. Check key reminder switch connector C-59 for damage.
If harness connector C-59 is damaged, repair or replace it. Refer to Harness connector Inspection.
If harness connector C-59 is in good condition, go to Step 3.




STEP 3. Check the harness wires between key reminder switch connector C-59 and ETACS-ECU connector C-82.
If the harness wires between key reminder switch connector C-59 and ETACS-ECU connector C-82 are damaged, repair them. Check that the malfunction is eliminated.
If the harness wires are in good condition, go to Step 4.




STEP 4. Check the harness wires between key reminder switch connector C-59 and body ground.
If the harness wires between key reminder switch connector C-59 and body ground are damaged, repair them. Check that the malfunction is eliminated.
If the harness wires are in good condition, replace the ETACS-ECU and then go to Step 5.

STEP 5. Check symptoms.
Confirm that the key reminder tone alarm operates normally.