Code No. U1417: Wrong coding data received


DIAGNOSTIC FUNCTION


CVT-ECU checks that the coding information is normal.

JUDGEMENT CRITERIA


The ETACS-ECU coding information about whether the 4WD-ECU is mounted or not is incorrect.

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 3.
Repair the CAN bus lines, and then go to Step 2.

STEP 2. Symptom recheck after erasing diagnosis code

Q. Is the diagnosis code set?
Go to Step 3.
The inspection is complete.

STEP 3. M.U.T.-III diagnosis code
Check if the ETACS-related diagnosis code is set.

Q. Is the ETACS-related diagnosis code set?
Carry out the appropriate troubleshooting.
Go to Step 4.

STEP 4. ETACS-ECU coding data check
Using M.U.T.-III, check if any abnormality is present in the coding data below which is stored in the ETACS-ECU.
Final drive
    OK: Front Drive <2WD>
    OK: 4WD FF Base <4WD>

Q. Is the check result normal?
Go to Step 5.
Replace the ETACS-ECU.

STEP 5. Symptom recheck after erasing diagnosis code

Q. Is the diagnosis code set?
Replace CVT-ECU.
Intermittent malfunction.