General System Description

TRANSMISSION CONTROL MODULE - PCM INPUT
The Transmission Control Module (TCM) supplies 3 inputs to the PCM:
- Vehicle Speed (road speed)
- Torque Management
- Gear Position

Vehicle Speed
The TCM supplies vehicle speed and distance traveled inputs to the PCM. From these inputs and the throttle position sensor input, the PCM determines when a deceleration condition occurs.

Torque Management
The PCM receives a torque management input from the TCM. The PCM receives the input when the transmission shifts gears. In response, the PCM shuts off a number of fuel injectors when the transmission shifts gears.