Torque Converter Clutch (TCC)/Extended Travel Brake Switches

The PCM uses the input from the Torque Converter Clutch (TCC) and extended travel brake switches to determine the state of the brake pedal (applied or released). The PCM uses the TCC switch input to mainly control the transaxle Torque Converter Clutch (TCC). The PCM sends the extended travel brake switch input, via Class 2, to the EBTCM for braking and traction control management. The switches receive power through a fused ignition feed (hot in RUN and START). With the ignition in the RUN or CRANK position, and the brakes not applied, the PCM should detect ignition voltage. With the brakes applied, the PCM should detect zero volts. The cruise control module also uses the input from the TCC brake switch. The cruise control system will disengage cruise operation when the TCC brake switch input indicates that the brakes are applied.