Code No. U1417: Implausible coding data


Diagnostic function



JUDGEMENT CRITERIA



PROBABLE CAUSES



  • Malfunction of the CAN bus line
  • ETACS-ECU coding information is abnormal
  • ETACS-ECU failure or improper assembly
  • Malfunction of CVT-ECU

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 2.
Repair the CAN bus lines. (Refer to GROUP 54C - Troubleshooting .)

STEP 2. Use M.U.T.-III to confirm a diagnosis code of other systems.
Check if the ETACS-ECU sets a diagnosis code.

Q. Is the diagnosis code set?
Diagnose the ETACS-ECU. (Refer to GROUP 54A - Troubleshooting )
Go to Step 3.

STEP 3. 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 <2WD vehicles>: Front Drive
    OK <4WD vehicles>: 4WD FF Base

Q. Is the check result normal?
Go to Step 4.
Repair the coding data. If repair is impossible, replace the ETACS-ECU.

STEP 4. Diagnosis code recheck
Check again if the diagnosis code is set to CVT-ECU.
(1)Erase the diagnosis code.
(2)Turn the ignition switch from the LOCK (OFF) position to the ON position.
(3)Check if the diagnosis code is set.

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