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ON BOARD DIAGNOSTIC (OBD) SYSTEM EC-63 C D E F G H I J K L M A EC – Test values Actual work procedures are explained using a DTC as an example. Be careful so that not only the DTC, but all Malfunction Indicator Lamp (MIL) NBS002WD DESCRIPTION The MIL is located on the instrument panel. 1. The MIL will light up when the ignition switch is turned ON with- , or see EC-757, "MIL AND DATA LINK CONNECTOR" 2. When the engine is started, the MIL should go off. ON BOARD DIAGNOSTIC SYSTEM FUNCTION The on board diagnostic system has the following three functions. When there is an open circuit on MIL circuit, the ECM cannot warn the driver by lighting up MIL when there is SEF217U Diagnostic Test KEY and ENG. Function Explanation of Function Mode I Ignition switch in Engine stopped BULB CHECK This function checks the MIL bulb for damage (blown, Engine running MALFUNCTION This is a usual driving condition. When a malfunction is ● Misfire (Possible three way catalyst damage) ● One trip detection diagnoses Mode II Ignition switch in Engine stopped SELF-DIAGNOSTIC This function allows DTCs and 1st trip DTCs to be read. Engine operating condition in fail-safe mode Engine speed will not rise more than 2,500 rpm due to the fuel cut |