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
The CAN bus line is defective.
Malfunction of the DIESEL system
Function setting error or no setting with a customisation
Chassis number not written or unmatched
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
.