INSPECTION PROCEDURE 15: KOS Timer Lock Function does not Work.


caution Before replacing the ECU, ensure that the power supply circuit, the earth circuit and the communication circuit are normal.

OPERATION


After the door is unlocked with the keyless entry function, if no operation is performed, the door is locked when the time specified by a customisation function has elapsed. However, an open signal from any door, key reminder switch OFF (with the key inserted) signal, or ignition push switch ON signal has been input to ETACS, the KOS timer will not operate.

PROBABLE CAUSES



DIAGNOSTIC PROCEDURE


STEP 1. M.U.T.-III diagnosis code


Check whether a KOS-related diagnosis code is set.

Q. Is the diagnosis code set?

Refer to .

Go to Step 2.

STEP 2. Check of the troubles


Check that the KOS timer lock function operates.

Q. Is the check result normal?

Intermittent malfunction is suspected (Refer to GROUP 00 - How to Use Troubleshooting/Inspection Service Points ).

Perform troubleshooting for each door switch (Refer to GROUP 54A - ETACS - Troubleshooting ).