TCM Function

The function of the TCM is to:

• Receive input signals transmitted from various switches and sensors.
• Determine required line pressure, shifting point, lock-up operation, etc.
• Transmit required output signals to the respective solenoids.
  TCM FUNCTION CHART
  
  

  Sensor (or signal)	→	TCM function	→	Actuator
  Transmission range switch CVT fluid temperature sensor Secondary pressure sensor Primary speed sensor Secondary speed sensor Engine speed signal Accelerator pedal position signal Closed throttle position signal Stop lamp switch signal Manual mode switch signal Vehicle speed signal	-	Shift control Line pressure control Primary oil pressure control Secondary oil pressure control Lock-up control Engine brake control Vehicle speed control Integrated Control System Fail-safe function Self-diagnosis function Communication function with CONSULT-III CAN communication control	-	Line pressure solenoid valve Secondary pressure solenoid valve Torque converter clutch solenoid valve Lock-up select solenoid valve Step motor Shift position indicator Manual mode indicator