INSPECTION PROCEDURE C-4: Dead lock timer function does not work normally.



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


COMMENT ON TROUBLE SYMPTOM


If the dead lock timer function does not work normally, the input signal circuit(s) to the ETACS-ECU may be defective.

PROBABLE CAUSES




DIAGNOSIS PROCEDURE


STEP 1. Check the operation of the dead lock system.


Check that the dead lock system works normally.

Q. Is the check result normal?

Go to Step 2.

Refer to troubleshooting .

STEP 2. Check the power supply system.


With the ignition switch in the LOCK (OFF) position, check if the following function operates normally:

Q. Is the check result normal?

Go to Step 3.

Refer to GROUP 54A, Malfunction of ETACS-ECU power supply circuit .

STEP 3. M.U.T.-III data list


Check the signals related to the dead lock timer function operation.

Item No.
Item name
Normal condition
256
Dr door ajar switch
Close→Open
257
As door ajar switch
Close→Open
258
RR door ajar switch
Close→Open
259
RL door ajar switch
Close→Open
260
Trunk/gate trunk ajar switch
Close→Open
OK: Normal conditions are displayed for all the items.

Q. Are the check result normal?

YES <Normal conditions are displayed for all the items.> : Go to Step 4.

NO <Normal condition is not displayed for item No. 256.> : Refer to GROUP 54A - Inspection Procedure 5: The front door switch (driver’s side) signal is not received .

NO <Normal condition is not displayed for item No. 257.> : Refer to GROUP 54A - Inspection Procedure 6: The front door switch (passenger’s side) signal is not received .

NO <Normal condition is not displayed for item No. 258.> : Refer to GROUP 54A - Inspection Procedure 7: The rear door switch (RH) signal is not received .

NO <Normal condition is not displayed for item No. 259.> : Refer to GROUP 54A - Inspection Procedure 8: The rear door switch (LH) signal is not received .

NO <Normal condition is not displayed for item No. 260.> : Refer to GROUP 54A - Inspection Procedure 9: The tailgate latch switch signal is not received .

STEP 4. Retest the system.


Check that the timer function works normally.

Q. Is the check result normal?

The trouble can be an intermittent malfunction (Refer to GROUP 00, How to use Troubleshooting/inspection Service Points - How to Cope with Intermittent Malfunction ).

Replace the ETACS-ECU.