Code No. U0141: ETACS CAN Timeout


caution
  • If there is any problem in the CAN bus lines, an incorrect diagnosis code may be set. Prior to this diagnosis, diagnose the CAN bus lines.
  • Whenever the ECU is replaced, ensure that the communication circuit is normal.
  • When the diagnosis code No.C1785 is set in ACC/FCM-ECU, the diagnosis code may also be set in ETACS-ECU. When the diagnosis code is set in ETACS-ECU, perform the diagnosis of the diagnosis code for ETACS-ECU first.
  • When the ETACS-ECU of vehicles without KOS is replaced, the encrypted code of the ignition key needs to be registered to the ETACS-ECU. (If the encrypted code is not registered, the engine cannot be started. Register the encrypted code as described in GROUP 54A, Immobilizer System - How to Register Key ID .)

OPERATION



DIAGNOSIS CODE SET CONDITION




  • The signal sent from the ETACS-ECU cannot be received for a certain period.

PROBABLE CAUSES



  • Malfunction of the CAN bus line
  • Malfunction of ETACS-ECU
  • Malfunction of ACC/FCM-ECU

DIAGNOSIS PROCEDURE

STEP 1. M.U.T.-III CAN bus diagnostics.
Use M.U.T.-III to perform the CAN bus diagnosis.

Q. Is the check result normal?
Go to Step 2
Repair the CAN bus lines (Refer to GROUP 54C - Troubleshooting ).

STEP 2. M.U.T.-III other system diagnosis code.
Check the ETACS diagnosis code (Refer to GROUP 54A - Troubleshooting ).

Q. Is the diagnosis code set?
Perform the relevant troubleshooting.
Go to Step 3

STEP 3. M.U.T.-III other system diagnosis code.
Check if the diagnosis code No. U0141 is set to other ECU.

Q. Is diagnosis code set?
Replace the ETACS-ECU (Refer to GROUP 54A - ETACS-ECU ).
Go to Step 4

STEP 4. Check whether the diagnosis code is reset.

Q. Is diagnosis code No.U0141 set?
Replace the ACC/FCM-ECU (Refer to ).
Intermittent malfunction. (Refer to GROUP 00 - How to Cope with Intermittent Malfunction ).