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Front Power Seat Control System (W/Memory) - Diagnostics: Inspection

  1. INSPECT FRONT POWER SEAT SWITCH LH 
    1. Measure the resistance between the terminals when each switch is operated.

      Standard: 

      Slide switch 

      FRONT POWER SEAT SWITCH LH (SLIDE SWITCH)

      Tester Connection Switch Condition Specified Condition
      1 - 9 FRONT Below 1 ohms
      1 - 6 BACK Below 1 ohms

      Front vertical switch 

      FRONT POWER SEAT SWITCH LH (FRONT VERTICAL SWITCH)

      Tester Connection Switch Condition Specified Condition
      1 - 10 UP Below 1 ohms
      1 - 5 DOWN Below 1 ohms

      Lifter switch 

      FRONT POWER SEAT SWITCH LH (LIFTER SWITCH)

      Tester Connection Switch Condition Specified Condition
      1 - 7 UP Below 1 ohms
      1 - 8 DOWN Below 1 ohms

      Reclining switch 

      FRONT POWER SEAT SWITCH LH (RECLINING SWITCH)

      Tester Connection Switch Condition Specified Condition
      1 - 3 FORWARD Below 1 ohms
      1 - 2 REAR Below 1 ohms

      If the result is not as specified, replace the power seat switch.

      Fig 1: Inspecting Front Power Seat Switch LH
      G02956879Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  2. INSPECT FRONT POWER SEAT SWITCH RH 
    1. Measure the resistance between the terminals when each switch is operated.

      Standard: 

      Slide switch 

      FRONT POWER SEAT SWITCH RH (SLIDE SWITCH)

      Tester Connection Switch Condition Specified Condition
      1 - 9 FRONT Below 1 ohms
      1 - 6 BACK Below 1 ohms

      Front vertical switch 

      FRONT POWER SEAT SWITCH RH (FRONT VERTICAL SWITCH)

      Tester Connection Switch Condition Specified Condition
      1 - 10 UP Below 1 ohms
      1 - 5 DOWN Below 1 ohms

      Lifter switch 

      FRONT POWER SEAT SWITCH RH (LIFTER SWITCH)

      Tester Connection Switch Condition Specified Condition
      1 - 7 UP Below 1 ohms
      1 - 8 DOWN Below 1 ohms

      Reclining switch 

      FRONT POWER SEAT SWITCH RH (RECLINING SWITCH)

      Tester Connection Switch Condition Specified Condition
      1 - 3 FORWARD Below 1 ohms
      1 - 2 REAR Below 1 ohms

      If the result is not as specified, replace the power seat switch.

      Fig 2: Inspecting Front Power Seat Switch RH
      G02956880Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  3. INSPECT SEAT MEMORY SWITCH LH 
    1. Measure the resistance of the switch.

      Standard: 

      SEAT MEMORY SWITCH LH

      Tester Connection Switch Condition Specified Condition
      1 - 2 SET switch ON Below 1 ohms
      1 - 3 M1 switch ON Below 1 ohms
      1 - 4 M2 switch ON Below 1 ohms

      If the result is not as specified, replace the memory switch.

      Fig 3: Inspecting Seat Memory Switch LH
      G02956881Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  4. INSPECT SEAT MEMORY SWITCH RH 
    1. Measure the resistance of the switch.

      Standard: 

      SEAT MEMORY SWITCH RH

      Tester Connection Switch Condition Specified Condition
      1 - 2 SET switch ON Below 1 ohms
      1 - 3 M1 switch ON Below 1 ohms
      1 - 4 M2 switch ON Below 1 ohms

      If the result is not as specified, replace the memory switch.

      Fig 4: Inspecting Seat Memory Switch RH
      G02956882Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  5. INSPECT LUMBAR FRONT POWER SEAT SWITCH LH 
    1. Measure the resistance between terminals of the seat switch.

      Standard: 

      LUMBAR FRONT POWER SEAT SWITCH LH

      Tester Connection Switch Condition Specified Condition
      1 - 3
      1 - 4      		 FRONT Below 1 ohms
      2 - 3
      2 - 4      		 BACK Below 1 ohms

      If the result is not as specified, replace the power seat switch.

      Fig 5: Inspecting Lumbar Front Power Seat Switch LH
      G02956883Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  6. INSPECT LUMBAR FRONT POWER SEAT SWITCH RH 
    1. Measure the resistance between terminals of the seat switch.

      Standard: 

      LUMBAR FRONT POWER SEAT SWITCH RH

      Tester Connection Switch Condition Specified Condition
      1 - 3
      1 - 4      		 FRONT Below 1 ohms
      2 - 3
      2 - 4      		 BACK Below 1 ohms

      If the result is not as specified, replace the power seat switch.

      Fig 6: Inspecting Lumbar Front Power Seat Switch RH
      G02956884Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  7. INSPECT POWER SEAT MOTOR ASSY 
    1. Check operation of the slide motor.
      1. Check the motor rotation when the battery is connected to the slide motor connector terminals.

        OK: 

        POWER SEAT MOTOR ASSY (SLIDE MOTOR)

        Measurement Condition Specified Condition
        Battery positive (+) -> 1
        Battery negative (-) -> 2        		 Rotates smoothly counterclockwise
        Battery positive (+) -> 2
        Battery negative (-) -> 1        		 Rotates smoothly clockwise

        If the result is not as specified, replace the slide motor.

        Fig 7: Checking Operation Of Slide Motor
        G02956885Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Check operation of the vertical motor.
      1. Check the motor rotation when the battery is connected to the vertical motor connector terminals.

        OK: 

        POWER SEAT MOTOR ASSY (VERTICAL MOTOR)

        Measurement Condition Specified Condition
        Battery positive (+) -> 1
        Battery negative (-) -> 2        		 Rotates smoothly counterclockwise
        Battery positive (+) -> 2
        Battery negative (-) -> 1        		 Rotates smoothly clockwise

        If the result is not as specified, replace the vertical motor.

        Fig 8: Checking Operation Of Front Vertical Motor
        G02956886Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    3. Check operation of the lifter motor.
      1. Check the motor rotation when the battery is connected to the lifter motor connector terminals.

        OK: 

        POWER SEAT MOTOR ASSY (LIFTER MOTOR)

        Measurement Condition Specified Condition
        Battery positive (+) -> 1
        Battery negative (-) -> 2        		 Rotates smoothly counterclockwise
        Battery positive (+) -> 2
        Battery negative (-) -> 1        		 Rotates smoothly clockwise

        If the result is not as specified, replace the lifter motor.

        Fig 9: Checking Operation Of Lifter Motor
        G02956887Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    4. Check operation of the reclining motor.
      1. Check the motor rotation when the battery is connected to the reclining motor connector terminals.

        OK: 

        POWER SEAT MOTOR ASSY (RECLINING MOTOR)

        Measurement Condition Specified Condition
        Battery positive (+) -> 1
        Battery negative (-) -> 2        		 Rotates smoothly counterclockwise
        Battery positive (+) -> 2
        Battery negative (-) -> 1        		 Rotates smoothly clockwise

        If the result is not as specified, replace the reclining motor.

        Fig 10: Checking Operation Of Reclining Motor
        G02956888Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    5. Check operation of the lumbar support adjuster motor.
      1. Check the motor rotation when the battery is connected to the lumbar support adjuster motor connector terminals.

        OK: 

        POWER SEAT MOTOR ASSY (LUMBAR SUPPORT ADJUSTER MOTOR)

        Measurement Condition Specified Condition
        Battery positive (+) -> 1
        Battery negative (-) -> 2        		 Rotates smoothly clockwise
        Battery positive (+) -> 2
        Battery negative (-) -> 1        		 Rotates smoothly counterclockwise

        If the result is not as specified, replace the adjuster motor.

        Fig 11: Checking Operation Of Lumbar Support Adjuster Motor
        G02956889Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
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