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