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6E–41 ENGINE DRIVEABILITY AND EMISSIONS If the MIL was set by either a fuel trim or misfire-related D The diagnostic tests that are passed must occur with D Plus or minus ten (10) percent of the engine load that D Similar engine temperature conditions (warmed up or Meeting these requirements ensures that the fault which D It informs the driver that a fault affects vehicle emission D As a bulb and system check, the MIL will come “ON” D When the MIL remains “ON” while the engine is DTC Types Each DTC is directly related to a diagnostic test. The D Type A D Emissions related D Requests illumination of the MIL of the first trip with a D Stores a History DTC on the first trip with a fail D Stores a Freeze Frame (if empty) D Stores a Fail Record D Updates the Fail Record each time the diagnostic D Type B D Emissions related D “Armed” after one (1) trip with a fail D “Disarmed” after one (1) trip with a pass D Requests illumination of the MIL on the second consecutive trip with a fail D Stores a History DTC on the second consecutive trip D Stores a Freeze Frame on the second consecutive D Stores a Fail Record when the first test fails (not consecutive trip fails) D Updates the Fail Record each time the diagnostic D Type C (if the vehicle is so equipped) D Non-Emissions related D Requests illumination of the Service Lamp or the first trip with a fail D Stores a History DTC on the first trip with a fail D Does not store a Freeze Frame D Stores Fail Record when test fails D Updates the Fail Record each time the diagnostic D Type D ( Type D non-emissions related are not utilized on certain vehicle applications). D Non-Emissions related D Dose not request illumination of any lamp D Stores a History DTC on the first trip with a fail D Does not store a Freeze Frame D Stores Fail Record when test fails D Updates the Fail Record each time the diagnostic IMPORTANT: Only four Fail Records can be stored. Each Fail Record is for a different DTC. It is possible that Storing and Erasing Freeze Frame Data and Failure Failure Records buffer. A subsequent failure will update the typically include the following parameters: D Air Fuel Ratio D Air Flow Rate D Fuel Trim D Engine Speed D Engine Load D Engine Coolant Temperature D Vehicle Speed D TP Angle D MAP/BARO D Injector Base Pulse Width D Loop Status |