Front Power Seat Control System (W/O Memory) Operation Check

  1. CHECK FRONT POWER SEAT FUNCTION

  1. CHECK POWER SEAT MOTOR ASSEMBLY (SLIDING*1, *2, FRONT VERTICAL*1, LIFTER*1, RECLINING*1, *2)

  1. CHECK LUMBAR SUPPORT MOTOR (for Driver Side)

Front Power Seat Control System (W/O Memory) -- Operation Check



CHECK FRONT POWER SEAT FUNCTION


    Land Cruiser, Land Cruiser Prado. Grj150 Trj150,155 Kdj150,155 Lj150, Gdj150,155.Seat.Front Power Seat Control System (W/ Memory).Front Power Seat Control System (W/O Memory) Operation Check

  1. Check the basic functions.

    Text in Illustration
    *a
    		Sliding function
    *b
    		Front vertical function
    *c
    		Lifter function
    *d
    		Reclining function
    *e
    		Lumbar support function

    1. Operate the power seat switches and check to make sure each seat function operates properly:

      1. Sliding (for Driver Side, 10 Way Seat Type and Front Passenger Side)
      2. Front vertical (for Diver Side, 10 Way Seat Type and Front Passenger Side, 8 Way Seat Type)
      3. Lifter (for Diver Side, 10 Way Seat Type and Front Passenger Side, 8 Way Seat Type)
      4. Reclining (for Driver Side, 10 Way Seat Type and Front Passenger Side)
      5. Lumbar support (for Driver Side)

CHECK POWER SEAT MOTOR ASSEMBLY (SLIDING*1, *2, FRONT VERTICAL*1, LIFTER*1, RECLINING*1, *2)
  1. *1: for Driver Side, 10 Way Seat Type and Front Passenger Side, 8 Way Seat Type
  2. *2: for Front Passenger Side, 4 Way Seat Type

  1. Check the PTC thermistor operation inside the power seat motor assembly.

    HINT:
    The PTC thermistor resistance increases when the front power seat switch is held down even after the power seat has been moved to as much as possible in one direction. If the resistance increases beyond a specified level, current is cut to prevent a short circuit.
    NOTICE:
    1. Make sure the inspection is performed with the seat installed in the vehicle.
    2. Perform the 4 steps*1 or 2 steps*2 below for each power seat function.

    1. Choose a power seat function. Operate the front power seat switch and move the seat as much as possible in one direction. Keep the seat in that position for approximately 60 seconds.

    2. Operate the front power seat switch again and continue to try to move the seat in the same direction as in the previous step. Measure the amount of time elapsed before current is automatically cut (the sound of the motor stops).

      Standard:
      4 to 90 seconds

    3. After current has been cut, release the front power seat switch and wait for approximately 60 seconds.

    4. Operate the same front power seat switch and move the seat in the opposite direction. Check that the motor operates.


CHECK LUMBAR SUPPORT MOTOR (for Driver Side)

  1. Check the PTC thermistor operation inside the lumbar support motor.

    NOTICE:
    Make sure the inspection is performed with the seat installed in the vehicle.

    1. Operate the power seat switch assembly and move the lumbar support to either the foremost or rearmost position. Keep the lumbar support in that position for approximately 60 seconds.

    2. Operate the power seat switch assembly again and continue to try to move the lumbar support in the same direction as in the previous step. Measure the time until current is cut (adjuster operation sound stops).

      Standard:
      4 to 90 seconds

    3. After current is cut, release the power seat switch assembly and wait for approximately 60 seconds.

    4. Operate the power seat switch assembly and move the lumbar support in the opposite direction. Check that the motor operates.