Outline of Operation

OUTLINE OF OPERATION
^ The operation of the electronic automatic transaxle is classified into three systems: the electronic control mechanism, the hydraulic pressure control mechanism, and the powertrain mechanism (includes the torque converter mechanism). The operation of each system is as follows:
- Electronic control mechanism
^ According to the signals from the switches and sensors in the input system, the TCM outputs the signal which matches the present driving condition to the linear type solenoid, ON/OFF type solenoids and the duty-cycle type solenoids in the hydraulic pressure control mechanism.
- Hydraulic pressure control mechanism
^ According to the signals from the TCM each solenoid operates to switch the hydraulic passages in the control valve body and controls the clutch engagement pressure.
^ The line pressure is adjusted by the linear type pressure control solenoid A and duty-cycle type pressure control solenoid B. The hydraulic passages are switched by the ON/OFF type solenoids (shift solenoid D and E.) And the clutch engagement pressure is controlled by the duty-cycle type solenoids (shift solenoid A, B, and C) and ON/OFF type solenoid (shift solenoid F).
- Powertrain mechanism
^ The driving force from the engine is transmitted through the torque converter to the transaxle.
^ Shift solenoid A, B, and C (duty-cycle type), pressure solenoid B (duty-cycle type), shift solenoid F (ON/ OFF type) or clutch engagement pressure control by the control valve enable the transmitted input driving force to be converted to optimum output driving force via the differential.