Code No.U1417 Implausible coding data



caution
  • Before replacing the ECU, ensure that the power supply circuit, the earth circuit and the communication circuit are normal.

DIAGNOSTIC FUNCTION


When the EV remote-ECU receives incorrect vehicle information from the ETACS-ECU, diagnosis code No. U1417 will be stored.

JUDGEMENT CRITERIA


The EV remote-ECU will determines that a malfunction exists when the ETACS-ECU coding data item "EV REMOTE-ECU" receives "Not present".

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 2

Repair the CAN bus line (Refer to GROUP 54C - Troubleshooting ). Repair the CAN bus line and go to Step 2.

STEP 2. M.U.T.-III other system diagnosis code


Check if diagnosis code is stored in the ETACS-ECU.

Q. Is the diagnosis code stored?

Diagnose the ETACS-ECU (Refer to ).

Go to Step 3

STEP 3. Check the coding data in the ETACS-ECU.


(1)Use M.U.T.-III to read out the coding data in ETACS-ECU. (Refer to GROUP 00 - Precautions before Service - Coding Reference Table .)
(2)Check the followings:

  • "EV REMOTE-ECU" is set to a correct value ("Present").

Q. Is the check result normal?

Go to Step 4

Replace with the coded ETACS-ECU, and then go to Step 4.

STEP 4. Check whether the diagnosis code is stored again.


Check if the diagnosis code No. U1417 is stored in the EV remote-ECU.
(1)Turn the power supply mode of the electric motor switch from OFF to ON.

Q. Is the diagnosis code stored?

Replace the EV remote-ECU.

The trouble can be an intermittent malfunction (Refer to GROUP 00 - How to use Troubleshooting/inspection Service Points - How to Cope with Intermittent Malfunction ).