DTC B1142: ESL authentification error; DTC B1151 OSS authentification timeout(ESL): Diagnosis

STEP 1. After turning the forced power supply output to "IG-ON" using the scan tool (M.U.T.-III), check if the diagnostic trouble code B1161 is stored.
1. Erase the DTC.
2. Turn the power supply mode of the engine switch from OFF to ON.
3. Check if DTC is stored.
4. Turn the power supply mode of the engine switch from ON to OFF.
Q: Is the DTC stored?

YES: Carry out the troubleshooting for the DTC B1161. Refer to DIAGNOSIS .

NO: Go to Step 2.
STEP 2. After performing the locking and unlocking operations of the electric steering lock, recheck the diagnostic trouble code.
1. Erase the DTC.
2. Turn the power supply mode of the engine switch from OFF to ON.
3. Check if DTC is stored.
4. Turn the power supply mode of the engine switch from ON to OFF.
Q: Is the DTC stored?

YES: Replace the electric steering lock and register the VIN (Refer to REGISTRATION WHEN REPLACING OSS-ECU AND ELECTRIC STEERING LOCK ).

NO: Intermittent malfunction is suspected (Refer to HOW TO COPE WITH INTERMITTENT MALFUNCTION ).