Diagnostic Procedure

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STEP 1. M.U.T.-III CAN bus diagnostics
Use M.U.T.-III to perform the CAN bus diagnosis.

Q: Is the check result normal?
1. YES: Go to Step 2.
2. NO: Repair the CAN bus lines (Refer to DIAGNOSIS CODE CHART ).
STEP 2. M.U.T.-III diagnosis code
Check if the engine-related diagnosis code is set.

Q: Is the engine-related diagnosis code set?
1. YES: Carry out the appropriate troubleshooting.
2. NO: Go to Step 3.
STEP 3. Symptom recheck after erasing diagnosis code
Q: Is the check result normal?
1. YES: Intermittent malfunction
2. NO: Replace TCM.