2002 Mercury Villager Owner's Manual - Page 230

Maintenance and Specifications Readiness for Inspection/Maintenance (I/M) testing In some localities, it may be a legal requirement to pass an I/M test of the on-board diagnostics system. If your "Check Engine/Service Engine Soon" light is on, refer to the description in the Warning lights and chimes section of the Instrument Cluster chapter. Your vehicle may not pass the I/M test with the "Check Engine/Service Engine Soon" light on. If the vehicle's powertrain system or its battery has just been serviced, the on-board diagnostics system is reset to a "not ready for I/M test" condition. To ready the on-board diagnostics system for I/M testing, follow the procedure described below: 1. Allow the engine to cool to ambient temperature (the engine coolant temperature gauge indicator will point to C). 2. Start the engine and let it run until it reaches normal operating temperature (the engine coolant temperature gauge indicator will be near the center of the normal area between H and C). 3. Accelerate the vehicle to 88 km/h (55 mph), then quickly release the accelerator pedal completely for at least six seconds. 4. Quickly depress the accelerator pedal for a moment, then drive the vehicle at a speed of 86 to 96 km/h (53 to 60 mph) for at least five minutes. 5. Bring the vehicle to a complete stop. 6. Accelerate the vehicle to 55 km/h (35 mph), and maintain the speed for 20 seconds. 7. Repeat steps five and six at least three times. 8. Accelerate the vehicle to 88 km/h (55 mph), and maintain the speed for at least three minutes. 9. Bring the vehicle to a complete stop and turn the engine off. 10. Repeat steps one through nine at least one more time. If step one through eight are interrupted, repeat the preceding step. Any safe driving mode is acceptable between steps. Once started, do not turn off the engine until step seven is completed. 230