Driver Side Seat Memory Switch Circuit: Description

The seat memory switch LH sends signals to the front power seat switch (position control ECU) via the multiplex communication system to memorize a given seat position. This memory system does not use a position sensor. The seat position is detected by counting pulses that are output when the motor turns. If there is no pulse output from the motor, the motor will stop operating. The seat memory switch LH is later used to send signals to the front power seat switch LH (position control ECU) to return the seat to one of the memorized positions.