Inspection Procedure 7: Electric steering lock does not become locked. (At power supply mode OFF)


COMMENTS ON TROUBLE SYMPTOM


The electric steering lock performs the locking operation by using the opening/closing of the door (ON/OFF of door switch) as a trigger. If the electric steering lock is not unlocked, the door switch circuit system or the electric steering lock may have a problem.

PROBABLE CAUSES



PROBABLE CAUSES


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


Check if the diagnosis code is set to OSS-ECU.

Q. Is the diagnosis code set?

Diagnose the OSS. Refer to .

Go to Step 2.

STEP 2. M.U.T.-III other system data list


Check the ETACS-ECU data list.

Item No.
 Check item
 Normal condition
Item 256
 Dr door ajar switch
 Open
Item 257
 As door ajar switch
 Open
Item 258
 RR door ajar switch
 Open
Item 259
 RL door ajar switch
 Open
OK: Normal condition is displayed.

Q. Is the check result normal?

Go to Step 3.

Diagnose the ETACS-ECU. Refer to .

STEP 3.Check of the troubles


Check if the electric steering lock becomes locked when the power supply mode is OFF.

Q. Is the check result normal?

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

Replace the electric steering lock and register the chassis number (Refer to ).