When replacing the ECU, always
check that the communication circuit is normal.
DIAGNOSTIC FUNCTION
If the electric steering lock receives any abnormal data from KOS&OSS-ECU as
a result of the certification communication with electric steering lock, KOS&OSS-ECU
sets the diagnosis codes No.B1142 and No.B1151. At the same time, KOS&OSS-ECU displays
the immobilizer certification system inspection warning to the combination meter.
JUDGEMENT CRITERIA
Check Conditions
At electric steering lock certification
Judgement Criterion
As a result of the certification communication with electric steering lock, the
electric steering lock receives the abnormal data from KOS&OSS-ECU.
PROBABLE CAUSES
Electric steering lock malfunction (electric steering
lock has been interchanged between two vehicles)
KOS&OSS-ECU malfunction (KOS&OSS-ECU has been interchanged between
two vehicles)
DIAGNOSIS PROCEDURE
STEP 1. After turning the forced power supply output to
IG-ON using the M.U.T.-III, check if diagnosis code No.B1161 is set.
Q.
Is the diagnosis code set?
Carry out the troubleshooting for diagnosis code No.B1161 (Refer to ).
Go to Step 2.
STEP 2. After performing the locking and unlocking operations of the
electric steering lock, recheck the diagnosis code
Q.
Is the diagnosis code set?
Replace the electric steering lock and register the chassis number (Refer to ).
Intermittent malfunction is suspected (Refer to GROUP 00 - How to Use Troubleshooting/Inspection
Service Points - How to Cope with Intermittent Malfunction ).