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Transmission Control Switch (TCS)

The TCS signals the PCM with VPWR whenever the TCS is pressed. On vehicles with this feature, the transmission control indicator lamp (TCIL) illuminates when the TCS is cycled to disengage overdrive.

Fig 1: Identifying Typical Transmission Control Switch (TCS)

Courtesy of FORD MOTOR CO.

Fig 2: Identifying Typical Transmission Control Switch (TCS)

Courtesy of FORD MOTOR CO.