Transmission Control Switch (TCS)

The TCS signals the PCM with VPWR whenever the TCS is pressed. On vehicles with this feature, the TCIL illuminates when the TCS is cycled to disengage overdrive.

Fig 1: Typical Stalk Mounted TCS

Courtesy of FORD MOTOR CO.

Fig 2: Typical Shift Selector Lever Mounted TCS

Courtesy of FORD MOTOR CO.