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Seat Belt: Inspection

  1. INSPECT FRONT SEAT INNER BELT ASSY LH 
    1. (a) Inspect the buckle switch. 
      1. Fasten the seat belt (Buckle switch is ON).
      2. Check the continuity or resistance between the terminals.

        Standard: 

        TERMINAL SPECIFICATION

        Terminal No. Specified Condition
        A-1 <=> A-4 1,330 Ω
        A-1 <=> A-6 Continuity
        Fig 1: Identifying Buckle Switch On Position
        G03476348Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      3. Release the seat belt (Buckle switch is OFF).
      4. Check the continuity or resistance between the terminals.

        Standard: 

        TERMINAL SPECIFICATION

        Terminal No. Specified Condition
        A-1 <=> A-4 330 Ω
        A-1 <=> A-6 No continuity

        If the result is not as specified, replace the inner belt assy.

        Fig 2: Identifying Buckle Switch Off Position
        G03476349Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Inspect the circuit for the airbag seat position sensor.
      1. Check the continuity between the terminals of connector A and the connector of the airbag seat position sensor.

    Standard: 

    TERMINAL SPECIFICATION

    Terminal No. Specified Condition
    A-5 <=> 1 (Connector of airbag seat position sensor) Continuity
    A-3 <=> 2 (Connector of airbag seat position sensor) Continuity

    If the result is not as specified, replace the inner belt assy.

    Fig 3: Inspecting Circuit For Airbag Seat Position Sensor
    G03476350Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  2. INSPECT FRONT SEAT OUTER BELT ASSY LH 
    NOTE: Do not apply battery voltage to the pretensioner connector.
    1. Inspect operation of the tension reducer.
      1. Connect the positive (+) lead from the battery to terminal 1 of connector A and the negative (-) lead to terminal 2.
      2. Check that the operating noise that the magnetized solenoid is attracting the plunger is heard.
      3. Check that the rewinding volume of the seat belt increases when the seat belt is pulled out and the battery negative (-) lead is disconnected.

      If the result is not as specified, replace the outer belt assy.

      Fig 4: Inspect Front Seat Outer Belt Connector LH
      G03476351Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  3. INSPECT FRONT SEAT INNER BELT ASSY RH 
    1. Inspect the buckle switch.
      1. Short the circuit between connector terminals 1 and 3 of the occupation detection sensor (Seat is occupied).
        Fig 5: Identifying Occupation Detecting Sensor Connector
        G03476352Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      2. Fasten the seat belt (Buckle switch is ON).
      3. Check the continuity between the terminals.

        Standard: 

        TERMINAL SPECIFICATION

        Terminal No. Specified Condition
        A-2 <=> A-3 No Continuity
        A-4 <=> A-3 No continuity
        A-2 <=> 1 (Connector of occupation detection sensor) Continuity
        A-3 <=> 3 (Connector of occupation detection sensor) No continuity
        A-4 <=> 3 (Connector of occupation detection sensor) Continuity
        Fig 6: Identifying Buckle Switch On Position
        G03476353Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      4. Release the seat belt (Buckle switch is OFF).
      5. Check the continuity between the terminals.

      Standard: 

      TERMINAL SPECIFICATION

      Terminal No. Specified Condition
      A-2 <=> A-3 Continuity
      A-3 <=> A-4 Continuity
      A-2 <=> 1 (Connector of occupation detection sensor) Continuity
      A-3 <=> 3 (Connector of occupation detection sensor) Continuity
      A-4 <=> 3 (Connector of occupation detection sensor) Continuity

      If the result is not as specified, replace the inner belt assy.

      Fig 7: Identifying Connector Of Occupation Detection Sensor
      G03476354Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Inspect the buckle switch.
      1. Disconnect the occupation detection sensor connector (Seat is not occupied).
        Fig 8: Disconnecting Occupation Detection Sensor Connector
        G03476355Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      2. Fasten the seat belt (Buckle switch is ON).
      3. Check the continuity between the terminals.

        Standard: 

        TERMINAL SPECIFICATION

        Terminal No. Specified Condition
        A-2 <=> A-3 No continuity
        A-4 <=> A-3 No continuity
        A-2 <=> 1 (Connector of occupation detection sensor) Continuity
        A-3 <=> 3 (Connector of occupation detection sensor) No continuity
        A-4 <=> 3 (Connector of occupation detection sensor) Continuity
        Fig 9: Fastening Connector Of Occupation Detection Sensor
        G03476356Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      4. Release the seat belt (Buckle switch is OFF).
      5. Check the continuity between the terminals.

      Standard: 

      TERMINAL SPECIFICATION

      Terminal No. Specified Condition
      A-2 <=> A-3 No continuity
      A-3 <=> A-4 Continuity
      A-2 <=> 1 (Connector of occupation detection sensor) Continuity
      A-3 <=> 3 (Connector of occupation detection sensor) Continuity
      A-4 <=> 3 (Connector of occupation detection sensor) Continuity

      If the result is not as specified, replace the inner belt assy.

      Fig 10: Identifying Connector Of Occupation Detection Sensor
      G03476357Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  4. INSPECT FRONT SEAT OUTER BELT ASSY RH 
    NOTE: Do not apply battery voltage to the pretensioner connector.
    1. Inspect operation of the tension reducer.
      1. Connect the positive (+) lead from the battery to terminal 1 of connector A and the negative (-) lead to terminal 2.
      2. Check that the operating noise the magnetized solenoid attracting the plunger, is heard.
      3. Check that the rewinding volume of the seat belt increases when the seat belt is pulled out and the battery negative (-) lead is disconnected.

      If the result is not as specified, replace the outer belt assy.

      Fig 11: Identifying Tensioner Reducer Connector
      G03476358Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002


  1. INSPECT FRONT SEAT INNER BELT ASSY LH 
    1. Inspect the buckle switch.
      1. Fasten the seat belt (Buckle switch is ON).
      2. Check the continuity or resistance between the terminals.

        Standard: 

        TERMINAL SPECIFICATION

        Terminal No. Specified Condition
        A-1 <=> A-4 1,330 Ω
        A-1 <=> A-6 Continuity
        Fig 1: Inspecting Front Seat Inner Belt Assembly
        G03476360Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      3. Release the seat belt (Buckle switch is OFF).
      4. Check the continuity or resistance between the terminals.

      Standard: 

      TERMINAL SPECIFICATION

      Terminal No. Specified Condition
      A-1 <=> A-4 330 Ω
      A-1 <=> A-6 No continuity

      If the result is not as specified, replace the inner belt assy.

      Fig 2: Releasing Seat Belt (Buckle Switch Is Off)
      G03476361Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Inspect the circuit for the airbag seat position sensor.
      1. Check the continuity between the terminals of connector A and the connector of the airbag seat position sensor.

      Standard: 

      TERMINAL SPECIFICATION

      Terminal No. Specified Condition
      A-5 <=> 1 (Connector of airbag seat position sensor) Continuity
      A-3 <=> 2 (Connector of airbag seat position sensor)

      If the result is not as specified, replace the inner belt assy.

      Fig 3: Inspecting Circuit For Airbag Seat Position Sensor
      G03476362Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  2. INSPECT FRONT SEAT INNER BELT ASSY RH 
    1. Inspect the buckle switch.
      1. Short the circuit between connector terminals 1 and 3 of the occupation detection sensor (Seat is occupied).
        Fig 4: Inspecting Front Seat Inner Belt Assembly RH
        G03476363Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      2. Fasten the seat belt (Buckle switch is ON).
      3. Check the continuity between the terminals.

        Standard: 

        TERMINAL SPECIFICATION

        Terminal No. Specified Condition
        A-2 <=> A-3 No Continuity
        A-4 <=> A-3 No continuity
        A-2 <=> 1 (Connector of occupation detection sensor) Continuity
        A-3 <=> 3 (Connector of occupation detection sensor) No continuity
        A-4 <=> 3 (Connector of occupation detection sensor) Continuity
        Fig 5: Identifying Fasten Seat Belt (Buckle Switch Is On)
        G03476364Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      4. Release the seat belt (Buckle switch is OFF).
      5. Check the continuity between the terminals.

      Standard: 

      TERMINAL SPECIFICATION

      Terminal No. Specified Condition
      A-2 <=> A-3 Continuity
      A-3 <=> A-4 Continuity
      A-2 <=> 1 (Connector of occupation detection sensor) Continuity
      A-3 <=> 3 (Connector of occupation detection sensor) Continuity
      A-4 <=> 3 (Connector of occupation detection sensor) Continuity

      If the result is not as specified, replace the inner belt assy.

      Fig 6: Releasing Seat Belt (Buckle Switch Is Off)
      G03476365Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Inspect the buckle switch.
      1. Disconnect the occupation detection sensor connector (Seat is not occupied).
        Fig 7: Disconnecting Occupation Detection Sensor Connector (Seat Is Not Occupied)
        G03476366Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      2. Fasten the seat belt (Buckle switch is ON).
      3. Check the continuity between the terminals.

        Standard: 

        TERMINAL SPECIFICATION

        Terminal No. Specified Condition
        A-2 <=> A-3 No continuity
        A-4 <=> A-3 No continuity
        A-2 <=> 1 (Connector of occupation detection sensor) Continuity
        A-3 <=> 3 (Connector of occupation detection sensor) No continuity
        A-4 <=> 3 (Connector of occupation detection sensor) Continuity
        Fig 8: Fastening Seat Belt (Buckle Switch Is On)
        G03476367Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      4. Release the seat belt (Buckle switch is OFF).
      5. Check the continuity between the terminals.

      Standard: 

      TERMINAL SPECIFICATION

      Terminal No. Specified Condition
      A-2 <=> A-3 No continuity
      A-3 <=> A-4 Continuity
      A-2 <=> 1 (Connector of occupation detection sensor) Continuity
      A-3 <=> 3 (Connector of occupation detection sensor) Continuity
      A-4 <=> 3 (Connector of occupation detection sensor) Continuity

      If the result is not as specified, replace the inner belt assy.

      Fig 9: Releasing Seat Belt (Buckle Switch Is Off)
      G03476368Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
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