Shift Control

Shift Control





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.

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





Shift Change System Diagram

BLIPPING CONTROL
This system makes transmission clutch engage readily by controlling (synchronizing) engine revolution according to the (calculation of) engine revolution after shifting down.
^ "BLIPPING CONTROL" functions (1) when downshifting by pedal depression at D range and (2) when downshifting under the manual mode.
^ TCM selects "BLIPPING CONTROL" or "NORMAL SHIFT CONTROL" according to the gear position, the select lever position, the engine torque and the speed when accelerating by pedal depression.
^ Revolution control demand signal is transmitted from TCM to ECM under "BLIPPING CONTROL".
^ TCM synchronizes engine revolution according to the revolution control demand signal.





Shift Change System Diagram