Code No.U1108 Additional CAN B ECU Detected


caution If the diagnosis code No. U1108 is set to the ETACS-ECU, always diagnose the CAN bus line.

JUDGMENT CRITERIA


If the ETACS-ECU receives the signal from the CAN-B line ECU which does not exist in the written variant code information, the ETACS-ECU sets the diagnosis code No. U1108.

PROBABLE CAUSES



DIAGNOSIS PROCEDURE


STEP 1. M.U.T.-III CAN bus diagnostics


Use the M.U.T.-III to diagnose the CAN bus lines.

Q. Is the check result normal?

Go to Step 2.

Repair the CAN bus line (Refer to GROUP 54C - Troubleshooting ).

STEP 2. Variant code check


Check the variant code written to the ETACS-ECU, and check whether it matches the ECU connected to the CAN-B line.

Q. Is the check result normal?

Go to Step 3.

Make a correction so that the ECU connected to the CAN-B line matches with the variant code information, and then go to Step 3.

STEP 3. Check whether the diagnosis code is reset.


Check again if the diagnosis code is set to the ETACS-ECU.
(1)Erase the diagnosis code.
(2)Turn the ignition switch from "LOCK" (OFF) position to "ON" position.
(3)Check if diagnosis code is set.

Q. Is the diagnosis code set?

Replace the ETACS-ECU.

This diagnosis is complete.