Power Seat Control System

SYSTEM OUTLINE

POWER SEAT (DRIVER'S SEAT)

DRIVING POSITION MEMORY FUNCTION
Each position sensor in the seat detects the number of rotations of the relevant motor (Seat movement amount) and inputs it to the ECU. This makes it possible to store and recall the seat position by operating the position memory SW. The driving seat position is stored and recalled through communication control of the J/B ECU and door ECU etc.

POWER SEAT (REAR PASSENGER'S SEAT)

MEMORY AND REGENERATION OPERATION
The rear seat ECU detects the positions of the rear seat and the headrest by each position sensor. And by operating the rear seat memory SW, the positions of the power seat and the headrest can be memorized and regenerated.

DOOR OPEN INTERLOCK RETURN OPERATION
Using the multiplex communication, the rear seat ECU detects the rear door opening under the following conditions:
- During rear doors are closed with the ignition SW being ON
- Not during the manual operation and the buckle SW interlock operation
- Not during the rear seat returning operation and when the door open interlock return operation is not canceled.
- When the brake pedal is depressed while the vehicle speed becomes 5 km/h or less
- When the shift position is P

As a result of that, the rear seat ECU controls the motor to operate to move the rear seat position backward. However, the operation will stop under the following conditions:
- When the ignition SW is turned to OFF
- When the manual operation is performed
- When the rear seat returning operation is performed
- After about 30 seconds from the operation stops
- When the motor lock is detected
- When SET or C SW is turned to ON
- When the buckle SW interlock operations is performed

Moreover, operating the C SW while the ignition SW is ON can set the door open interlock operation in active or not. However, it can not be set under the following conditions:
- During the manual operation
- During the memory regeneration operation
- During the door open interlock return operation
- During the rear seat returning operation
- During the buckle SW interlock operation