Code No. B1142 ESL authentification error
Code No. B1151 OSS authentification timeout (ESL)


caution 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
Judgement Criterion

PROBABLE CAUSES



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 ).