On-Board Diagnostics
If the AWC-ECU detects any problem in the CAN communication line or the ECUs, which the AWC-ECU is communicating with, it sets a diagnostic trouble code. The diagnostic trouble codes can be confirmed by connecting the scan tool (M.U.T.-IIISE). The set diagnostic trouble codes are not erased even after the ignition switch has been turned to the LOCK (OFF) position, or the battery has been disconnected. The diagnostic trouble codes can be erased by operating the scan tool (M.U.T.-IIISE).