Transaxle Outputs

ACTUATOR CONTROL VALVE
There are five actuators which have normally open valves. With no voltage applied to the terminals, a return spring holds the valve open and the actuator allows oil to flow from the supply port to the control pressure port. When voltage is applied to the coil, the magnetic field is energized pulling the sliding armature against the return spring. When the armature is in this position, the valve is closed, the pressure supply port is blocked, and the control port is connected to the exhaust port.

The actuators are located in the transaxle valvebody and may be completely energized (closed), de-energized (open), or pulse width modulated (PWM). When an actuator is being modulated, the valve opens and closes up to 70 times per second. This allows a percentage of the oil pressure available at the supply port to pass to the control port. The actual percentage is determined by an electrically controlled duty cycle from the powertrain control module (PCM). This is the ratio of the length of time the valve remains open (pulse width) to the total length of time of each cycle (one on and off cycle). These actuators are the:
- Main line pressure (MLP) actuator
- Torque converter clutch (TCC) actuator
- 2nd/reverse clutch actuator
- 3rd clutch actuator
- 4th clutch actuator