CVT CONTROL SYSTEM: System Description: Description

The TCM senses vehicle operating conditions through various sensors or signals. It always controls the optimum shift position and reduces shifting and lock-up shocks.
Receive input signals transmitted from various switches and sensors.
Determine required line pressure, shifting point, lock-up operation, etc.
If malfunction is detected, the system enters fail-safe mode. Refer to "FAIL-SAFE ".

Sensor (or signal)	==>	TCM	==>	Actuator
Transmission range switch CVT fluid temperature sensor Secondary pressure sensor Primary pressure sensor Secondary speed sensor Primary speed sensor Engine speed signal Accelerator pedal position signal Closed throttle position signal Stop lamp switch signal Vehicle speed signal Overdrive control switch	==>	Shift control ( SHIFT CONTROL SYSTEM ) Oil pressure control ( OIL PRESSURE CONTROL SYSTEM ) Lock-up and select control ( LOCK-UP AND SELECT CONTROL SYSTEM ) Fail-safe ( FAIL-SAFE ) Self-diagnosis ( DIAGNOSIS SYSTEM (TCM) ) CONSULT communication line ( DIAGNOSIS SYSTEM (TCM) ) CAN communication line ( U1000 CAN COMM CIRCUIT )	==>	Line pressure solenoid valve Secondary pressure solenoid valve Torque converter clutch solenoid valve Lock-up select solenoid valve Step motor Shift position indicator O/D OFF indicator lamp