Inspection Procedure 12:
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 using the keyless entry function or the door entry function,
if no operation is performed, the door is locked when the time specified by a customisation
function has elapsed. However, when an open signal of any of the doors is received by ETACS-ECU
or when the engine switch power supply mode is ON, the KOS timer lock function will not be activated.
PROBABLE CAUSES
Malfunction of ETACS-ECU
Malfunction of the door switches
DIAGNOSIS PROCEDURE
STEP 1. Check the keyless entry function operation
Check that the keyless entry function operation normally.
Q.
Is the check result normal?
Go to Step 2
Refer to Inspection Procedure 11: "Keyless entry function does not work ."
STEP 2. M.U.T.-III diagnosis code
Check if any diagnosis code is set to the KOS-ECU.
Q.
Is the diagnosis code set?
Refer to diagnosis code chart .
Go to Step 3.
STEP 3. 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 ).