The driver seat adjuster memory module controls all of the memory seat functions through the use of inputs and outputs which are hardwired to the module. The keyword 82 serial data circuit provides a communication line between the module and a scan tool and is used for diagnostic purposes and module programing only.

The driver seat adjuster memory module controls the driver seat adjuster actuator motors by providing voltage and ground through the adjuster motor supply circuits. The direction of adjuster motor travel is determined by of the polarity of the supply circuits. The driver seat adjuster memory module uses position sensors for storing and recalling memory seat position settings. The position sensors are internal parts of the adjuster actuator motors. The driver seat adjuster memory module provides a 5 volt power supply and ground to each of the position sensors, and monitors position sensor signal voltages which vary from 0 to 5 volts depending on the seat position.

The driver seat adjuster memory module monitors resistance through the driver seat adjuster switch. Switch inputs to the driver seat adjuster memory module are determined by continuity through a combination of driver seat adjuster switch circuits. Driver seat adjuster switch circuits are shared among individual switches, this limits the ability of the driver seat adjuster memory module to interpret simultaneous switch inputs.