Inspection Procedure: 5 The engine will not start with KOS (IG knob operates normally).



caution Before replacing the ECU, ensure that the communication circuit is normal.

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 line (Refer to GROUP 54C - Troubleshooting ).

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


Check whether a KOS-related diagnosis code is set.

Q. Is the diagnosis code set?

Refer to .

Go to Step 3.

STEP 3. Check the customisation


Check if "KOS feature" is set to "Both enable" or "ENG strt enable" with a customisation function.

Q. Is it set to "Both enable" or "ENG strt enable"?

Go to Step 4.

Set "KOS feature" to "Both enable" or "ENG strt enable" with a customisation function (Refer to ).

STEP 4. Check that the engine starts


Q. Does the engine start?

The diagnosis is complete.

Refer to GROUP 13A - Troubleshooting .