B1143

DTC B1143 ESL status fail

DIAGNOSTIC FUNCTION

If a status error is received from the electric steering lock via LIN, OSS-ECU sets the DTC B1143, and displays the immobilizer certification system inspection warning screen to the multi information display of the combination meter.
NOTE:
In addition, when the electric steering lock was replaced, the DTC B1143 may be set with the electric steering lock locked (a new electric steering lock is in the unlocked status).
Therefore, before the diagnosis code recheck of after the replacement of electric steering lock, be sure to perform the locking control of the electric steering lock first.

DTC SET CONDITION

Check Conditions

- After OSS-ECU activation
Judgment Criterion

- Status abnormality is received from the electric steering lock via LIN.

TROUBLESHOOTING HINTS

- Electric steering lock malfunction
- Malfunction of OSS-ECU

DIAGNOSIS

STEP 1. After performing the locking and unlocking operations of the electric steering lock, recheck the diagnosis code.

Q. Is the DTC set?

YES Replace the electric steering lock and register the VIN (Refer to Programming and Relearning).
Then go to Step 2.
NO Go to Step 2.
STEP 2. Check whether the DTC is reset.

Q. Is the DTC set?

YES Replace the OSS-ECU and register the VIN (Refer to Programming and Relearning).
NO Intermittent malfunction is suspected How to Cope With Intermittent Malfunctions).