FREE REPAIR MANUALS & LABOR GUIDES 1982-2013 Vehicles
Courtesy of Operation CHARM
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Car repair manuals for everyone.
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Mercury
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1994
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Grand Marquis V8-281 4.6L SOHC
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Repair and Diagnosis
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Sensors and Switches
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Sensors and Switches - Steering and Suspension
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Sensors and Switches - Suspension
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Vehicle Speed Sensor Signal
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Description and Operation
Vehicle Speed Sensor Signal: Description and Operation
PURPOSE
The
Vehicle Speed Sensor
(VSS)
determines whether the vehicle is stationary or moving below or above 15 mph.