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Home >> Mercury >> 1994 >> Grand Marquis V8-281 4.6L SOHC >> Repair and Diagnosis >> Powertrain Management >> Transmission Control Systems >> Sensors and Switches - Transmission and Drivetrain >> Sensors and Switches - A/T >> Transmission Mode Switch >> Description and Operation

Transmission Mode Switch: Description and Operation

PURPOSE
The Transmission Control Switch (TCS) is a momentary contact switch that signals the powertrain control module to allow automatic shifts from 1st through 4th or 1st through 3rd gears.
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