Circuit Description

DPMS (Driving Position Memory System)

How the Circuit Works
The power mirrors and driver's seat have a memory feature. The two power mirror adjustments and the four driver's seat adjustments (forward and back, front up and down, rear up and down, seat back angle) can be regulated separately. All of the adjustments can be memorized at the same time by pressing the MEMO button on the DPMS switch, and then (within five seconds) pressing one of the two position buttons. If you same position button is pressed after the adjustments are memorized, the seat will move to those memorized positions.

NOTE: Disconnecting the battery for more than 30 seconds will cancel the memorized positions.

Power Mirror Position Sensors
Each power mirror has two Hall-effect type sensors to detect the changes in voltage caused by the movements of the mirror. The power mirror control circuit in the passenger's multiplex control unit then stores the voltage changes for that mirror's position in its memory.

Power Seat Position Sensors
Each power seat motor has a corresponding reed switch sensor, which sends a pulse to the driver's power seat control unit when the motor rotates. The driver's power seat control unit then stores the number of pulses for that seat position in its memory.