DESCRIPTION & OPERATION
POWER SEAT
Power seat option is available for driver’s and passenger’s
seat. Seats have a memory function and an integral diagnosis system.
Memory function has 3 memory buttons for different seat settings.
There is one control for seat cushion and one for backrest. Seat
control module, which is located under seat, controls 4 motors. Three
motors are under the seat and one is in the backrest. Memory-type
control module takes seat position information from 4 position
sensors.
Control module contains 9 relays: 2 for each motor and one
main on/off relay. Motor No. 1 controls fore and aft movement of the
seat. Motor No. 2 controls backrest angle, motor No. 3 controls seat
cushion height at the rear, and motor No. 4 controls seat cushion
height at the front.
If system detects a broken, shorted, or grounded wire, motors
can then only be operated without their memory function. If system
detects a broken, shorted, or grounded motor wire, that motor is
disabled. Other motors can only be operated without their memory
function.
If a control button is pressed for more than 30 seconds, a
timer circuit cuts off power supply to motors by disabling main relay.
Seat positions are held in an EEPROM which retains information
indefinitely in case of power failure.