SHIFT CHANGE CONTROL: System Description: Notes

Item	Signal	TCM function	Actuator
Input speed sensor 1, 2	Input speed	Shift change control	High and low reverse clutch solenoid valve Direct clutch solenoid valve Input clutch solenoid valve Low brake solenoid valve 2346 brake solenoid valve Front brake solenoid valve Torque converter clutch solenoid valve Line pressure solenoid valve Anti-interlock solenoid valve
Output speed sensor	Vehicle speed
A/T fluid temperature sensor	ATF temperature
ECM	Engine speed signal(1)
	Accelerator pedal position signal(1)
	Closed throttle position signal(1)
	Engine and A/T integrated control signal (Engine torque)(1)
BCM	Stop lamp switch signal(1)
(1) This signal is transmitted via communication line.

The clutch pressure control solenoid is controlled by the signals from the switches and sensors. Thus, the clutch pressure is adjusted to be appropriate to the engine load state and vehicle driving state. It becomes possible to finely control the clutch hydraulic pressure with high precision and a smoother shift change characteristic is attained.

The clutch is controlled with the optimum timing and oil pressure by the engine speed, engine torque information, etc.

*1: Full phase real-time feedback control monitors movement of gear ratio at gear change, and controls oil pressure in real-time to achieve the best gear ratio.