Transmission Component and System Description

Transmission Component and System Description

The mechanical components of this unit are as follows:

* A torque converter with an electronically controlled capacity clutch (ECCC)
This transmission is equipped with an ECCC. The pressure plate does not fully lock to the torque converter cover. Instead, the pressure plate maintains a small amount of slippage, about 20 RPM, in SECOND, THIRD, and FOURTH gears, depending on the vehicle application. ECCC was developed to reduce the possibility of noise, vibration, or chuggle caused by TCC apply. Typical apply speeds are 49-52 km/h (30-32 mph) in THIRD gear and 65-73 km/h (40-45 mph) in FOURTH gear. Full lockup is available at highway speeds on some applications.
* A drive link assembly
* Intermediate/4th and Lo/Reverse friction band assemblies
* Forward, Coast, 2nd, Reverse, and Direct multiple disc clutch assemblies
* Two planetary gear sets: Input and Reaction
* Two roller clutches - Lo and 2nd
* One sprag clutch
* One vane type oil pump
* One control valve assembly
* A final drive and differential assembly


The electrical components of this unit are as follows:

* Two shift solenoid valves, 1-2 and 2-3
* A torque converter clutch pulse width modulated (TCC PWM) solenoid valve
* A transmission pressure control (PC) solenoid valve
* An automatic transmission fluid temperature (TFT) sensor
* Two speed sensors: input and output speed sensor
* An automatic transmission fluid pressure (TFP) manual valve position switch assembly
* An automatic transmission wiring harness assembly
* A park/neutral position (PNP) switch


For more information Refer to Electronic Component Description (Electronic Component Description) .