Position Sensors

Position sensors are used by Memory Seat Module (MSM) and Memory Mirror Module (MMM) to store motor positions in memory and return motors to stored memory positions. Each sensor is a potentiometer, and is mounted to each motor's transmission cable. When cable rotates, resistance of potentiometer varies, and feedback voltage is monitored by MSM or MMM to determine motor position. Feedback voltages vary between 0.25 volt to 4.75 volts. The MSM and MMM store motor positions by recording each position sensor feedback voltage. When a memorized position is requested, each motor is moved until the position sensor feedback voltage equals feedback voltage stored in memory. For easy exit functions, only seat position sensor feedback voltages are recorded and only seat motors operate.