Code No. U0114 4WD CAN timeout
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 (Refer to GROUP 54C - CAN Bus Diagnostics Table ).
  • If diagnosis codes U0114 and U0141 are set in ABS-ECU, always diagnose the CAN bus line. If there is any fault in the CAN bus lines, an incorrect diagnosis code may be set. In this case, the set diagnosis code is not highly reliable.
  • Whenever ECU is replaced, ensure that the CAN bus lines are normal.
  • 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 .)

DIAGNOSIS CODE SET CONDITIONS


This diagnosis code is set if ABS-ECU cannot receive the signal sent from other ECU for a certain period.

OPERATION


ABS-ECU communicates with the 4WD-ECU and ETACS-ECU via the CAN bus lines.

PROBABLE CAUSES


Code No. U0114
  • Wiring harness or connector failure of CAN bus line
  • 4WD-ECU malfunction
  • ABS-ECU malfunction
Code No. U0141
  • Wiring harness or connector failure of CAN bus line
  • ETACS-ECU malfunction
  • ABS-ECU malfunction

DIAGNOSIS PROCEDURE


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


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

Q. Is the check result normal?

Go to Step 2.
Repair the CAN bus lines (Refer to GROUP 54C - CAN Bus Diagnostics Table ). On completion, go to Step 4.

STEP 2. Check whether the diagnosis code is reset.


Q. Is Code No. U0114 or U0141 set?

Go to Step 3.
The procedure is complete.

STEP 3. M.U.T.-III other system diagnosis code


Use M.U.T.-III to check that other diagnosis code is set in the ECU corresponding to the relevant diagnosis.

Q. Is other diagnosis code set?

Troubleshoot for the relevant diagnosis code.
Go to Step 4.

STEP 4. M.U.T.-III diagnosis code


Use M.U.T.-III to check if the same diagnosis code (time-out) is set in the other ECU.

Q. Is any diagnosis code set?

YES (Code No. U0114 is set) : Replace 4WD-ECU, and then go to Step 5.
YES (Code No. U0141 is set) : Replace the ETACS-ECU (Refer to GROUP 54A - ETACS .), and then go to Step 5.
NO (No diagnosis code is set.) : The procedure is complete.

STEP 5. Check whether the diagnosis code is reset.


Erase the diagnosis code.

Q. Is Code No. U0114 or U0141 set?

Replace the hydraulic unit (integrated with ABS-ECU) (Refer to ).
The procedure is complete.