General Description

The CD4E 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 is a four-speed unit with electronic control that is designed for operation in the transversely mounted powertrains of front-wheel drive vehicles. The CD4E transaxle uses a compound planetary gearset, chain drive, final drive planetary gearset and an open differential. One band, five friction clutches and two one-way clutches provide four forward gear ratios and reverse.

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

The hydraulic control system of the 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.