ON-BOARD DIAGNOSTIC (OBD) SYSTEM OUTLINE

• The OBD system has the following functions:

- Malfunction detection function: detects malfunctions of the input/output devices and system components of the ATX.

- Fail-safe function: controls the output device function and input value of the sensors/switches to ensure minimum vehicle drivability when a failure is detected.

- Memory function: stores the DTC when a failure is detected.

- PID data monitoring function: monitors the input/output signal and calculated value of the PCM and sends the monitoring data to the scan tool.

- Simulation function: Allows override operation of simulation items for input/output system parts preset in the PCM.