On-Vehicle Inspection

WARNING: This page is about a different car, the 2006 Toyota 4Runner. However, it is still accessible from the selected car via links, so may be relevant.

CHECK POWER SEAT FUNCTION
1. Check the basic functions.
  1. Operate the power seat switches and check to make sure each seat function works:
    - Sliding
    - Front vertical
    - Rear vertical
    - Reclining
    - Lumbar support
      
      Fig 1: Checking Power Seat Function
      Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
CHECK POWER SEAT MOTOR ASSY (SLIDING, FRONT VERTICAL, REAR VERTICAL AND RECLINING FUNCTIONS)
1. Check the PTC operation inside the power seat motor.
  HINT:
  
  The PTC thermistor's resistance increases when the power seat switch is held down even after the power seat has been moved to the maximum in one direction. After the resistance increases, current is shut off to prevent a short circuit.
  
  NOTE: Perform step ( 1) to ( 4) for the full range of motion for each power seat function.
  1. Choose a power seat function. Operate the power seat switch and move the seat to the maximum in one direction. Keep the seat in that position for approximately 60 seconds.
  2. Operate the power seat switch again and continue to try to move the seat in the same direction as in step ( 1). Measure the amount of time elapsed before the electrical current is automatically cut. Check if electrical current has shut off by making sure the sound of the motor has stopped.
    Standard: 4 to 90 seconds
  3. After the current has stopped, release the power seat switch and wait for approximately 60 seconds.
  4. Operate the same power seat switch and move the seat to the opposite extreme of direction in step ( 1). Check that the motor operates.
CHECK LUMBAR SUPPORT ADJUSTER ASSY LH
1. Check the PTC operation inside the power seat motor.
  NOTE: The inspection should be performed with the seat installed in the vehicle.
  1. Operate the lumbar support switch and move the lumbar support to either the foremost or rearmost position. Keep the seat in that position for approximately 60 seconds.
  2. Operate the lumbar support switch again and continue to try to move the lumbar support in the same direction as in step ( 1). Measure the amount of time elapsed before the electrical current is automatically cut. Check if electrical current has shut off by making sure the sound of the motor has stopped.
    Standard: 4 to 90 seconds
  3. After the current has stopped, release the lumbar support switch and wait for approximately 60 seconds.
  4. Operate the lumbar support switch and move the seat to the opposite extreme of direction in step ( 1). Check that the motor operates.
W/ MEMORY: CHECK MEMORY AND REACTIVATION FUNCTION
1. Turn the ignition switch on and move the shift lever into the P position.
2. Move the seat into the foremost and uppermost positions using each seat switch.
3. Check that the buzzer sounds for 0.5 seconds and the seat position is recorded when the SW1 switch is pressed while the SET switch is held down.
4. Move the seat from the foremost and uppermost positions using each seat switch.
  
  Fig 2: Locating SET Switch
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
5. Check that the buzzer sounds for 0.5 seconds and the seat position is recorded when the SW2 switch is pressed while the SET switch is held down.
6. Check that the buzzer sounds for 0.1 seconds and the seat automatically moves into the foremost and uppermost positions (set positions) when the SW1 switch is pressed.
7. Check that the buzzer sounds for 0.1 seconds and the seat automatically moves out of the foremost and uppermost positions (set positions) when the SW2 switch is pressed.
8. With the driver side door open and the key in the vicinity of the driver's seat within 30 seconds after the ignition switch is turned off, check that the seat automatically moves into the set position when the SW1 or SW2 switch is pressed.
9. Move the seat into both maximum positions of the slide movement, and disconnect the negative terminal cable of the battery while the memory switch is pressed. Then leave the seat in that position for 3 minutes. The seat position memory will be erased.
10. Move the seat into all the maximum positions (front/rear and up/down) using each seat switch.
11. After the SW1 and SW2 switches are pressed together while the SET switch is held down check that the seat does not move (the seat position is not recorded) when the SW1 or SW2 switches is pressed.