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Front Power Seat Control System: Inspection

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  1. w/ Memory: 

    INSPECT SEAT MEMORY SWITCH 

    1. Check the resistance between the terminals when each switch is operated.
      Fig 1: Inspecting Seat Memory Switch (W/ Memory)
      G03479225Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    Standard: 

    TESTER CONNECTION SPECIFICATIONS

    Tester Connection Switch Position Specified Condition
    1 - 2 SET Switch ON Below 1 Ω
    1 - 4 SW1 Switch ON
    1 - 3 SW2 Switch ON

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

  2. w/o Memory: 

    INSPECT FRONT POWER SEAT SWITCH LH 

    1. Check the resistance between the terminals when each switch is operated.
      Fig 2: Inspecting Front Power Seat Switch LH (W/O Memory)
      G03479226Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    Standard: 

    Slide switch 

    TESTER CONNECTION SPECIFICATIONS

    Tester Connection Switch Position Specified Condition
    1 - 9 FRONT Below 1 Ω
    4 - 6
    4 - 6 OFF
    4 - 9
    1 - 6 REAR
    4 - 9

    Front vertical switch 

    TESTER CONNECTION SPECIFICATIONS

    Tester Connection Switch Condition Switch Position Specified Condition
    1 - 10 UP Below 1 Ω
    4 - 5
    4 - 5 OFF
    4 - 10
    1 - 5 DOWN
    4 - 10

    Lifter switch 

    TESTER CONNECTION SPECIFICATIONS

    Tester Connection Switch Condition Switch Position Specified Condition
    1 - 7 UP Below 1 Ω
    4 - 8
    4 - 7 OFF
    4 - 8
    1 - 8 DOWN
    4 - 7

    Reclining switch 

    TESTER CONNECTION SPECIFICATIONS

    Tester Connection Switch Position Specified Condition
    1 - 3 FRONT Below 1 Ω
    2 - 4
    2 - 4 OFF
    3 - 4
    1 - 2 REAR
    3 - 4

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

    Fig 3: Inspecting Front Power Seat Switch RH
    G03479227Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  3. INSPECT FRONT POWER SEAT SWITCH RH 
    1. Check the resistance between the terminals when each switch is operated.

    Standard: 

    Slide switch 

    TESTER CONNECTION SPECIFICATIONS

    Tester Connection Switch Position Specified Condition
    1 - 9 FRONT Below 1 Ω
    4 - 6
    4 - 6 OFF
    4 - 9
    1 -6 REAR
    4 - 9

    Reclining switch 

    TESTER CONNECTION SPECIFICATIONS

    Tester Connection Switch Position Specified Condition
    1 - 3 FRONT Below 1 Ω
    2 - 4
    2 - 4 OFF
    3 - 4
    1 - 2 REAR
    3 - 4

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

  4. INSPECT POWER SEAT SWITCH ASSY 

    (LUMBAR SUPPORT) 

    1. Check the resistance between the terminals when the switch is operated.
      Fig 4: Inspecting Power Seat Switch Assy
      G03479228Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    Standard: 

    TESTER CONNECTION SPECIFICATIONS

    Tester Connection Switch Position Specified Condition
    1 -2 HOLD Below 1 Ω
    3 - 4
    1 - 2 OFF
    4 - 5
    1 -3 RELEASE
    4 - 5

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

    Fig 5: Inspecting Front Seat Adjuster Assy
    G03479229Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  5. INSPECT FRONT SEAT ADJUSTER ASSY 
    1. Inspect operation of the slide motor.
      1. Check that the motor rotates smoothly when the battery is connected to the slide motor connector terminals.

      Standard: 

      MEASUREMENT CONDITION OPERATION

      Measurement Condition Operational Direction
      Battery positive (+) --> 1
      Battery negative (-) --> 2      		 Clockwise
      Battery positive (+) --> 2
      Battery negative (-) --> 1      		 Counterclockwise

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

      Fig 6: Inspecting Operation Of Vertical Motor
      G03479230Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Only driver side:

      Inspect operation of the vertical motor.

      1. Check that the motor rotates smoothly when the battery is connected to the vertical motor connector terminals.

      Standard: 

      MEASUREMENT CONDITION OPERATION

      Measurement Condition Operational Direction
      Battery positive (+) --> 1
      Battery negative (-) --> 2      		 Clockwise
      Battery positive (+) --> 2
      Battery negative (-) --> 1      		 Counterclockwise

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

    3. Only driver side:

      Inspect operation of the lifter motor.

      1. Check that the motor rotates smoothly when the battery is connected to the lifter motor connector terminals.
        Fig 7: Inspecting Operation Of Lifter Motor
        G03479231Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Standard: 

      MEASUREMENT CONDITION OPERATION

      Measurement Condition Operational Direction
      Battery positive (+) --> 1
      Battery negative (-) --> 2      		 Clockwise
      Battery positive (+) --> 2
      Battery negative (-) --> 1      		 Counterclockwise

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

      Fig 8: Inspecting Operation Of Reclining Motor
      G03479232Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    4. Inspect operation of the reclining motor.
    1. Check that the motor rotates smoothly when the battery is connected to the reclining motor connector terminals.

    Standard: 

    MEASUREMENT CONDITION OPERATION

    Measurement Condition Operational Direction
    Battery positive (+) --> 1
    Battery negative (-) --> 2    		 Clockwise
    Battery positive (+) --> 2
    Battery negative (-) --> 1    		 Counterclockwise

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

    Fig 9: Inspecting Lumbar Support Adjuster Assy (W/ Lumbar Support)
    G03479233Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  6. w/ Lumbar support: 

    INSPECT LUMBAR SUPPORT ADJUSTER ASSY 

    1. Inspect operation of the lumbar support adjuster motor.
    1. Check that the motor rotates smoothly when the battery is connected to the lumbar support adjuster motor connector terminals.

    Standard: 

    MEASUREMENT CONDITION OPERATION

    Measurement Condition Operational Direction
    Battery positive (+) --> 1
    Battery negative (-) --> 2    		 Clockwise
    Battery positive (+) --> 2
    Battery negative (-) --> 1    		 Counterclockwise

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

    Fig 10: Identifying Relay (IG1) Terminals
    G03479234Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  7. INSPECT RELAY (IG1) 
    1. Check the resistance of the IG1 relay.

    Standard: 

    TESTER CONNECTION SPECIFICATIONS

    Tester Connection Specified Condition
    3 - 5 10 kΩ or higher
    Below 1 Ω (When battery voltage is applied to terminals 1 and 2)

    If the result is not as specified, replace the relay.

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