Transaxle Description

The CD4E automatic transaxle is a four-speed, front wheel drive automatic unit with electronic controls for:
- Electronic Pressure Control (EPC) for shift quality
- shift scheduling
- 3-2 shift timing
- coast braking
- Torque Converter Clutch (TCC) control

The transaxle features a four-element torque converter with a torque converter clutch and geartrain that includes:
- compound planetary gearset
- chain drive
- planetary gearset final drive
- pinion and side gear differential

The hydraulic control system of the CD4E automatic transaxle has five solenoids that control:
- shift feel (through line pressure control)
- shift scheduling (through shift valve position control)
- modulated application of the torque converter clutch
- timing of 3-2 shifts
- engine braking during coast operation