ON-BOARD DIAGNOSTIC (OBD) SYSTEM OUTLINE [FN4A-EL]

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• The OBD system has the following functions:

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

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

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

- PID data monitoring function: monitors the input/output signals and calculated values of the PCM or TCM and sends the monitoring data to the WDS or equivalent.