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ON-BOARD DIAGNOSTIC (OBD) SYSTEM OUTLINE

BHE050201026T01

• 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: fixes 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.