STEP 1. Using scan tool (M.U.T.-IIISE), diagnose CAN bus line.
STEP 2. Using scan tool (M.U.T.-IIISE), check whether the other DTC is set.
STEP 3. Using scan tool (M.U.T.-IIISE), check whether the other DTC is set again.
STEP 4. Using scan tool (M.U.T.-IIISE), check whether the DTC is set again.