ON-BOARD DIAGNOSTIC (OBD) SYSTEM OUTLINE [SJ6A-EL]

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• The OBD system has the following functions:

  ― Malfunction detection function: detects malfunctions of the input/output devices and system components of the AT.
  ― 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 TCM 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 TCM.