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Home >> Ford >> 2003 >> Excursion 7.3 F, 4WD >> Repair and Diagnosis (Single Page) >> Engine Performance >> Theory and Operation >> Engine Controls - Theory & Operation - 7.3L Diesel >> Computerized Engine Controls >> Input Devices >> Transmission Control Switch
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Transmission Control Switch

The Transmission Control Switch (TCS) is located on end of automatic transmission gearshift lever. When TCS is pressed, Transmission Control Indicator Light (TCIL) illuminates and key power is sent to PCM. Overdrive gear is then disabled by PCM.

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