CTS V6-3.2L VIN N (2003)
Power Seat Motor Position Sensor: Description and Operation
POSITION SENSORS
The seat position sensors are potentiometers which are either attached directly to the motor's transmission cable or are an internal part of the motor.
The MSM supplies a 5 volt reference voltage through the 5 volt reference circuit and ground through the low reference circuit to the respective seat
position sensors. When the motor or cable rotates, the resistance of the potentiometer varies changing the feedback voltage of the position sensor
signal circuit. This voltage varies from 0.25 volts to 4.75 volts. The MSM monitors this voltage signal to determine the position of the seat.
When a memory set command is received, the MSM records the seat position by storing the feedback voltage from each position sensor. Then, when a
memory recall command is received, the MSM moves the motors until the position sensor feedback voltages equals the feedback voltages stored in
memory.
