POWER SEAT CONTROL SYSTEM > DETAILS



OPERATING CONDITION

  1. Memory Function for Driver Seat

    1. The memory, recall and memory call conditions of the memory function are as follows:

      Function
      		Condition
      		Operation
      		Action
      Memory
      		Power switch is on (IG).
      		Switch 1, 2 or 3 is pressed while the "SET" button is pressed.
      1. Memorizes the seat position when switch 1, 2 or 3 is pressed.
      2. When the memory setting is completed, the buzzer will sound for 0.5 seconds.
      Switch 1,2 or 3 is pressed within 3 seconds after the "SET" button is pressed.
      Recall
      1. Power switch is on (IG).
      2. Park (P) selected
      3. Memory switch is off.
      4. Seat position is memorized.
      		Switch 1, 2 or 3 is pressed.
      		Recalls the seat position that was memorized in the position control ECU.
      1. Power switch is off.
      2. Memory switch is off.
      3. Seat position is memorized.
      4. Driver door is opened.
      		Switch 1, 2 or 3 is pressed within 180 seconds after power switch is turned off and driver door is opened.
      1. Power switch is off.
      2. Memory switch is off.
      3. Seat position is memorized.
      4. Open driver door is closed.
      		Switch 1, 2 or 3 is pressed within 60 seconds after power switch is turned off and the open driver door is closed.
      Memory Call
      1. A key ID is registered to switch 1, 2 or 3.
      2. Power switch is off.
      3. Inside of the outside door handle is touched or the key unlock button is pushed, and then the driver door is opened.
      		The seat automatically moves rearward up to 35 mm (1.38 in.)* from the memorized seat position.
      1. Power switch is on (ACC) or on (IG).
      		The seat automatically returns to the memorized seat position.

      1. *: Seat movement distance can be changed using the customized body electronics system. For details, refer to the Repair Manual.


FUNCTION

  1. The power seat control system has the following functions:

    Function
    		Outline
    		Seat
    Driver
    Power Control
    		The fore-and-aft slide, reclining, front vertical, lifter and lumbar support can be adjusted using the power seat switch.
    		X
    Memory
    		Memory
    		The memory function can memorize 3 different seat positions.
    		X
    Recall
    		The recall function can recall 3 different memorized seat positions.
    		X
    Memory Call
    		The memory call function, which utilizes the key IDs, is used to memorize and retrieve the optimal driving positions for a person possessing the key.
    		X

    1. X: Equipped

  2. The memory function works in combination with the following systems, ensuring usability and enabling easy entering or exiting of the vehicle.

    System
    		Outline
    Outside Rear View Mirror System
    		The outer mirror control ECU memorizes the outside rear view mirror positions and recalls them when all conditions are met.


OPERATION


  1. Seat Position Detection Method



    1. Power Seats with Memory Function

      1. The Hall IC installed on the power seat motor generates pulses corresponding to the speed of the motor. These pulses are then picked up by the position control ECU and switch assembly (position control ECU) in order to detect the seat position.

      Y103923E02


      Text in Illustration 
      *1
      		Power Seat Motor
      		*2
      		Position Control ECU and Switch Assembly (Position Control ECU)
      *3
      		Hall IC
      		-
      		-
      *a
      		Current pulsations generated by motor
      		-
      		-


DIAGNOSIS

  1. The position control ECU and switch assembly (position control ECU) has a diagnosis function. It stores a record of any power seat control system failures in its memory in the form of Diagnostic Trouble Codes (DTCs).

  2. The position control ECU and switch assembly (position control ECU) outputs malfunction data and 5-digit DTCs to the intelligent tester.

  3. The 5-digit DTCs can be read after connecting the intelligent tester to the DLC3. For details, refer to the Repair Manual.