Step 1. ECU check on the SWS monitor

Check that the power supply and earth lines to the ETACS-ECU and the SWS communication lines are normal.

• Ignition switch: OFF

ECUS TO BE CHECKED

• ETACS ECU

OK: "OK" is displayed on the "ETACS ECU" menu.

Q: Is the check result normal?

YES:  Go to Step 2.
NO:  Refer to Inspection Procedure A-3 "Communication with the ETACS-ECU is not possible ."

Step 2. Confirm communication data by using the SWS monitor.

Check the SWS communication signals, which are related to the key reminder function.

<Selected item> ETACS

• Driver's door: open

Item No.	Item name	Normal conditions
Item 32	DR DOOR SW	ON

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 ."

Step 3. Check the ETACS SW data by using the SWS monitor.

Check the ETACS-ECU signals, which are related to the key reminder function.

• Ignition switch: OFF (key inserted)

• Driver's door: From unlocked to locked

Item No.	Item name	Normal conditions
Item 03	KEY REMIN SW	OFF
Item 21	DR DOR LCK SW	from OFF to ON
Item 22	DR DOR ULK SW	from ON to OFF

OK: Normal conditions are displayed for all the items.

Q: Is the check result normal?

Normal conditions displayed for all the items:  Go to Step 4.
Normal condition is not displayed for item No.03:  Refer to inspection procedure P-10 "The key reminder switch signal is not received." Refer to .
Normal condition is not displayed for item No.21 or No.22:  Refer to inspection procedure P-14 "The driver's door lock actuator switch signal is not received ."

Step 4. Retest the system.

Q: Does the ignition key reminder function work normally?

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