Code No.U1417: Coding Data Malfunction



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.U1417 is set in AWC-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.

OPERATION




DIAGNOSIS CODE SET CONDITIONS




PROBABLE CAUSES



  • The CAN bus line is defective.
  • Malfunction of the ETACS-ECU
  • Malfunction of AWC-ECU
  • ETACS-ECU has been interchanged between two vehicles.

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 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. ETACS-ECU coding data check


Using the M.U.T.-III, check if there is any abnormality to the coding data stored in the ETACS-ECU. (Refer to GROUP 00 - Coding Reference Table ).

Q. Is the check result normal?

Go to Step 4.
Repair the coding data or replace ETACS-ECU. (Refer to GROUP 54A - ETACS-ECU ). Then go to Step 5.

STEP 4. Check whether the diagnosis code is reset.


Q. Is diagnosis code No.U1417 set?

Replace the AWC-ECU. (Refer to ). Then go to Step 5.
Intermittent malfunction. (Refer to GROUP 00 - How to Cope with Intermittent Malfunction ).

STEP 5. Check whether the diagnosis code is reset.


Q. Is diagnosis code No.U1417 set?

Return to Step 1.
This diagnosis is complete.