STEP 1. Using scan tool MB991958, diagnose the CAN bus lines.
STEP 2. DTC recheck after resetting CAN bus lines
STEP 3. M.U.T.-III other system diagnostic trouble code
STEP 4. M.U.T.-III diagnostic trouble code
STEP 5. M.U.T.-III data list
STEP 6. Check whether the diagnostic trouble code is set again.
STEP 7. Check whether the diagnostic trouble code is set again.