Transmission Mode Switch: Description and Operation

Transmission Control Switch (TCS)/Transmission Control Indicator Lamp (TCIL)-SHO only











The transmission control switch (TCS) is a momentary contact switch. When this switch is pressed, a signal is sent to the powertrain control module (PCM). The powertrain control module (PCM) then energizes the transmission control indicator lamp (TCIL) and toggles Solenoid 3 (SS3), applying the forward clutch to provide engine braking and canceling fourth gear operation.

Note: TCIL will also flash if the EPC circuit is shorted.