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Home >> Ford >> 2003 >> Excursion 7.3 F, RWD >> Repair and Diagnosis (Single Page) >> Engine Performance >> System >> Engine Controls - Theory & Operation - CNG, Flex-Fuel & Gasoline >> Computerized Engine Controls >> Input Devices >> Transmission Control Switch
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Transmission Control Switch

Transmission Control Switch (TCS) may also be referred to as overdrive (O/D) cancel switch. The TCS signals the PCM with keypower whenever the TCS is pressed. TCS position is controlled by vehicle operator. If overdrive is disengaged, O/D OFF indicator located on instrument panel, or Transmission Control Indicator Light (TCIL) located on shift lever, will illuminate.

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