•  The TCM determines the optimum clutch engagement pressure and drives the duty-cycle shift solenoids and duty-cycle type pressure control solenoid B based on input signals in accordance with the vehicle driving conditions including the engine torque (calculated from throttle opening angle, vehicle speed, engine speed, gear position, intake air rate, and other operational parameters).

•  By driving the duty-cycle solenoid valves, and performing the electronic control of the clutch engagement pressure directly through the TCM, minute hydraulic control, which could not be obtained by the clutch engagement pressure control with the accumulator, is obtained.

Block diagram

am3zzn00001085

1	TR switch
2	Input/turbine speed sensor
3	Intermediate sensor
4	Oil pressure switch
5	APP sensor
6	CKP sensor
7	MAF sensor
8	TFT sensor
9	M range switch
10	Up switch
11	Down switch
12	Shift solenoid A
13	Shift solenoid B
14	Shift solenoid C
15	Pressure control solenoid B