S-AWC (Super All Wheel Control)

Code No.U1417: Coding Data Malfunction

CAUTION:

- If there is any problem in the CAN bus lines, an incorrect diagnostic trouble 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 diagnostic trouble code No.U1417 is set in AWC-ECU, the diagnostic trouble code may also be set in ETACS-ECU. When the diagnostic trouble code is set in ETACS-ECU, perform the diagnosis of the diagnostic trouble code for ETACS-ECU first.

OPERATION

AWC-ECU receives the vehicle information stored in ETACS-ECU via CAN bus lines.

DIAGNOSTIC TROUBLE CODE SET CONDITIONS

The code is set when the vehicle information received from ETACS-ECU is not correct.

PROBABLE CAUSES

- Malfunction of the CAN bus line

- ETACS-ECU malfunction

- Malfunction of AWC-ECU

- ETACS-ECU has been interchanged between two vehicles.

DIAGNOSTIC PROCEDURE

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

Use scan tool to perform the CAN bus diagnosis.

Q. Is the check result normal?

YES Go to Step 2.
NO Repair the CAN bus lines. CAN Bus Diagnostics Chart).
STEP 2. M.U.T.-III diagnostic trouble code.

Check the ETACS diagnostic trouble code. Electronic Time and Alarm Control System (ETACS)).

Q. Is the diagnostic trouble code set?

YES Perform the relevant troubleshooting.
NO 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. Programming and Relearning).

Q. Is the check result normal?

YES Go to Step 4.
NO Repair the coding data or replace ETACS-ECU. Electronic Time and Alarm Control System (ETACS)-ECU Removal and Installation). Then go to Step 6.
STEP 4. Check the part number of ETACS-ECU

Check the part number of ETACS-ECU.

Q. Is the check result normal?

YES Go to Step 5.
NO Replace the ETACS-ECU Electronic Time and Alarm Control System (ETACS)-ECU Removal and Installation), and then go to Step 6.
STEP 5. Check whether the diagnostic trouble code is reset.

Q. Is diagnostic trouble code No.U1417 set?

YES Replace the AWC-ECU. (Refer to AWC-ECU Removal and Installation). Then go to Step 6.
NO Intermittent malfunction. How to Cope With Intermittent Malfunctions).
STEP 6. Check whether the diagnostic trouble code is reset.

Q. Is diagnostic trouble code No.U1417 set?

YES Return to Step 1.
NO This diagnosis is complete.