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System Description
 
 
SYSTEM DIAGRAM
ComponentFunction
ECMMainly transmits the following signal to TCM via CAN communication.
  • Engine and CVT integrated control signal
    noteGeneral term for the communication (torque-down permission, torque down request, etc.) exchanged between the ECM and TCM.
  • Engine speed signal
  • Engine coolant temperature signal
  • Accelerator pedal position signal
  • Closed throttle position signal
Mainly receives the following signals from TCM via CAN communication.
  • Malfunction indicator light signal
TCMTCM
BCMMainly transmits the following signal to TCM via CAN communication
  • Stop light switch signal
  • Paddle shifter shift up signal
  • Paddle shifter shift down signal
ABS actuator and electronic unit (control unit)Mainly transmits the following signal to TCM via CAN communication
  • Vehicle speed signal
  • ABS operation signal
  • TCS operation signal
  • ASC operation signal
  • Decel G sensor signal
Combination meterMainly receives the following signals from TCM via CAN communication.
  • Shift position signal
  • CVT warning message signal
Malfunction indicator light (MIL)Malfunction Indicator Light (MIL)Malfunction Indicator Lamp (MIL) (FULL TFT METER) or Malfunction Indicator Light (MIL)Malfunction Indicator Lamp (MIL) (7 INCH INFORMATION DISPLAY)
Shift position indicatorShift position indicatorShift Position Indicator
Drive mode select switchDrive Mode Select SwitchSystem Description
Transmission range switchTransmission Range SwitchTransmission Range Switch
Input speed sensorInput Speed Sensor
Output speed sensorOutput Speed SensorOutput Speed Sensor
CVT unit connector—
Primary speed sensorPrimary Speed SensorPrimary Speed Sensor
Control valveCVT fluid temperature sensor*CVT Fluid Temperature SensorCVT Fluid Temperature Sensor
Primary pressure sensor*Primary Pressure SensorPrimary Pressure Sensor
Secondary pressure sensor*Secondary Pressure SensorSecondary Pressure Sensor
Line pressure solenoid valve*Line Pressure Solenoid ValveLine Pressure Solenoid Valve
Primary pressure solenoid valve*Primary Pressure Solenoid Valve
Secondary pressure solenoid valve*Secondary Pressure Solenoid Valve
Torque converter clutch solenoid valve*Torque Converter Clutch Solenoid Valve
Select solenoid valve*Select Solenoid Valve
Paddle shifterPaddle Shifter
Shift actuatorShift Actuator
Electric shift selectorElectric Shift Selector Electric Shift Selector
Electric shift control moduleMainly transmits the following signal to TCM via CAN communication
  • Electric shift selector signal
These components are included in control valve assembly.
 
 
MAIN CONTROL CONTENTS OF TCM
ControlsReference
Line pressure controlSystem Description
Shift controlSystem Description
Select controlSystem DescriptionSystem Description
Lock-up controlSystem Description
Drive Mode SelectorSystem Description
Fail-safeFail-safeFail-safe
Self-diagnosis functionM.U.T.-III SE FunctionCONSULT Function
Communication function with M.U.T.-III SEM.U.T.-III SE FunctionCONSULT Function
For electric shift system, refer to System Description.
 
 
LIST OF CONTROL ITEMS AND INPUT/OUTPUT
Control ItemShift controlLine pressure controlSelect controlLock-up controlFail-safe function*
InputEngine torque signal
(CAN communication)
×××××
Engine speed signal
(CAN communication)
×××××
Accelerator pedal position signal
(CAN communication)
××××
Closed throttle position signal
(CAN communication)
×××
Stop light switch signal
(CAN communication)
××××
Primary pressure sensor×
Secondary pressure sensor ×××
CVT fluid temperature sensor×××××
Primary speed sensor×××××
Output speed sensor××××
Input speed sensor×××××
Transmission range switch×××××
Electric shift selector signal
(CAN communication)
×××
Paddle shifter shift up/down signal
(CAN communication)
×
OutputLine pressure solenoid valve××××
Primary pressure solenoid valve×××
Torque converter clutch solenoid valve××
Secondary pressure solenoid valve×××
Select solenoid valve×××
Shift position indicator
(CAN communication)
×
*: If these input/output signals show errors, TCM activates the fail-safe function.