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.