Foreword [Full-Auto Air Conditioner]: Outline

The OBD (on-board diagnostic) system has the following functions:
- Malfunction detection function: Detects malfunctions in the climate control unit and outputs DTCs (Diagnostic Trouble Codes).
- PID/data monitor function: Reads out specific input/output signals and the system status.
DTCs can be read/cleared using the M-MDS.