Code No. B1141 ESL authentification timeout

caution

When replacing the ECU, always check that the communication circuit is normal.

DIAGNOSTIC FUNCTION

If the necessary data cannot be received from the electric steering lock via LIN during the certification communication with electric steering lock, OSS-ECU sets the diagnosis code No.B1141, and displays the immobilizer certification system inspection warning screen to the multi information display of the combination meter.

JUDGEMENT CRITERIA

Check Conditions

At electric steering lock certification

Judgment Criterion

During the certification communication with electric steering lock, the necessary data cannot be received from the electric steering lock via LIN.

PROBABLE CAUSES

LIN bus line malfunction (open circuit, short to earth, or short to power supply in LIN line)
Damaged wiring harness or connector (open circuit or short to earth in PCO line, or open circuit in PWR line)
Electric steering lock malfunction
Malfunction of OSS-ECU

DIAGNOSIS PROCEDURE

STEP 1. Check of open circuit in PWR line between electric steering lock connector and fusible link

note

Before the wiring harness check, check the joint connector, ETACS-ECU connector, and repair if necessary.

Q. Is the check result normal?

	Go to Step 2.

	Repair the connector(s) or wiring harness.

STEP 2. Check of short to power supply, short of earth, and open circuit in PCO line between electric steering lock connector and OSS-ECU connector

note

Because the conformity cannot be determined even when the digital tester is used to measure the voltage of PCO line between the selector lever assembly connector and OSS-ECU connector, be sure to use the analogue tester. (With the keyless operation key placed outside of the vehicle, if the tester needle swings to the battery voltage when the engine switch is operated, it is judged normal.)

Q. Is the check result normal?

	Go to Step 3.

	Repair the connector(s) or wiring harness.

STEP 3. Check of short to power supply, short of earth, and open circuit in LIN line between electric steering lock connector and OSS-ECU connector

Q. Is the check result normal?

	Go to Step 4.

	Repair the connector(s) or wiring harness.

STEP 4. 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 ). Then go to Step 5.

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

STEP 5. Check whether the diagnosis code is reset.

Q. Is the diagnosis code set?

	Replace the OSS-ECU and register the chassis number (Refer to ).

	The diagnosis is complete.