Inspection Procedure 9: Vehicle information is not displayed normally. (actual vehicle status is different from the status displayed)



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

COMMENTS ON TROUBLE SYMPTOM


When vehicle information is not displayed normally (actual vehicle status is different from the status displayed), the CAN bus lines, the ETACS-ECU circuit, the plug-in hybrid EV system or the EV remote-ECU may be defective.
note The vehicle information, which is updated by the wireless LAN device, is displayed.

PROBABLE CAUSES




DIAGNOSIS PROCEDURE


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


Use 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. M.U.T.-III diagnosis code


Check if diagnosis code is stored in the EV remote-ECU.

Q. Is the diagnosis code stored?

Troubleshoot the EV remote-ECU. Refer to .

Go to Step 3.

STEP 3. M.U.T.-III other system diagnosis code


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

Q. Is the diagnosis code stored?

YES (Stored in the PHEV-ECU) : Troubleshoot the PHEV-ECU (Refer to GROUP 54D - Troubleshooting ).

YES (Stored in the ETACS-ECU) : Troubleshoot the ETACS-ECU (Refer to ).

Go to Step 4.

STEP 4. Check what of vehicle information items cannot be read.


Check whether the displayed vehicle information items correspond to the actual vehicle status.

Q. Does the displayed vehicle information items correspond to the actual vehicle status?

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

Check the system (information item) which cannot be read.