LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Lexus >> 2007 >> IS 250 AWD >> Repair and Diagnosis >> Restraints >> Restraints Control Systems >> Seat Belt >> Front Seat Inner Belt Assembly >> Inspection
April 5, 2026: LEMON Manuals is launched! Read the announcement.

Front Seat Inner Belt Assembly: Inspection

  1. INSPECT FRONT SEAT INNER BELT ASSEMBLY RH (for Power Seat) 
    1. w/ Occupant Classification System:
      1. Measure the resistance between the terminals of the switch when the switch is operated.

        Standard resistance 

        FRONT SEAT INNER BELT ASSEMBLY RH (FOR POWER SEAT) (W/OCCUPANT CLASSIFICATION SYSTEM)

        Tester Connection Condition Specified Condition
        T3-2 - T3-3 Seat belt is fastened Below 1 Ω
        T3-2 - T3-3 Seat belt is unfastened 10 kΩ or higher
        Fig 1: Identifying T3 (W/ Occupant Classification System) Connector Terminals
        G05320153Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. w/o Occupant Classification System:
      1. Measure the resistance between the terminals of the switch when the switch is operated.

        Standard resistance 

        FRONT SEAT INNER BELT ASSEMBLY RH (FOR POWER SEAT) (W/O OCCUPANT CLASSIFICATION SYSTEM)

        Tester Connection Condition Specified Condition
        T3-4 - T3-5 Seat belt is fastened Below 1 Ω
        T3-4 - T3-5 Seat belt is unfastened 10 kΩ or higher
        Fig 2: Identifying T3 (W/O Occupant Classification System) Connector Terminals
        G05320154Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  2. INSPECT FRONT SEAT INNER BELT ASSEMBLY RH (for Manual Seat) 
    1. w/ Seat Heater System:
      1. Measure the resistance between the terminals of the switch when the switch is operated.
        Fig 3: Identifying Front Seat Inner Belt Assembly Rh (W/ Seat Heater System) Connector Terminals
        G05320155Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

        Standard resistance 

        FRONT SEAT INNER BELT ASSEMBLY RH (FOR MANUAL SEAT)

        Tester Connection Condition Specified Condition
        Pu1-4 - Pu1-12 Seat belt is fastened Below 1 Ω
        Pu1-4 - Pu1-12 Seat belt is unfastened 10 kΩ or higher
      2. Measure the resistance between the terminals of the front seat inner belt assembly.

        Standard resistance 

        FRONT SEAT INNER BELT ASSEMBLY RH (FOR MANUAL SEAT) (FRONT SEAT INNER BELT)

        Tester Connection Condition Specified Condition
        T17-1 - T16-3 Always Below 1 Ω
        T17-2 - T16-4 Always Below 1 Ω
        T17-3 - T16-13 Always Below 1 Ω
        A1-1 - T16-5 Always Below 1 Ω
        A1-2 - T16-1 Always Below 1 Ω
        A1-3 - T16-17 Always Below 1 Ω
        A1-4 - T16-18 Always Below 1 Ω
        A1-5 - T16-12 Always Below 1 Ω
        A1-6 - T16-11 Always Below 1 Ω
        A1-7 - T16-2 Always Below 1 Ω
        A1-8 - T16-16 Always Below 1 Ω
        u1-2 - Pu1-16 Always Below 1 Ω
        u1-3 - Pu1-1 Always Below 1 Ω
        u1-4 - Pu1-17 Always Below 1 Ω
        u1-5 - Pu1-9 Always Below 1 Ω
    2. w/o Seat Heater System:
      1. Measure the resistance between the terminals of the switch when the switch is operated.
        Fig 4: Identifying Front Seat Inner Belt Assembly Rh (W/O Seat Heater System) Connector Terminals
        G05320156Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

        Standard resistance 

        FRONT SEAT INNER BELT ASSEMBLY RH (FOR MANUAL SEAT)

        Tester Connection Condition Specified Condition
        PT1-4 - PT1-12 Seat belt is fastened Below 1 Ω
        PT1-4 - PT1-12 Seat belt is unfastened 10 kΩ or higher
      2. Measure the resistance between the terminal of the front seat inner belt assembly.

        Standard resistance 

        FRONT SEAT INNER BELT ASSEMBLY RH (FOR MANUAL SEAT) (FRONT SEAT INNER)

        Tester Connection Condition Specified Condition
        T17-1 - T16-3 Always Below 1 Ω
        T17-2 - T16-4 Always Below 1 Ω
        T17-3 - T16-13 Always Below 1 Ω
        A1-1 - T16-5 Always Below 1 Ω
        A1-2 - T16-1 Always Below 1 Ω
        A1-3 - T16-17 Always Below 1 Ω
        A1-4 - T16-18 Always Below 1 Ω
        A1-5 - T16-12 Always Below 1 Ω
        A1-6 - T16-11 Always Below 1 Ω
        A1-7 - T16-2 Always Below 1 Ω
        A1-8 - T16-16 Always Below 1 Ω
  3. INSPECT FRONT SEAT INNER BELT ASSEMBLY LH (for Power Seat) 
    1. Measure the resistance between the terminals of the switch when the switch is operated.
      Fig 5: Identifying Front Seat Inner Belt Assembly LH (For Power Seat) Connector Terminals
      G05320157Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Standard resistance 

      FRONT SEAT INNER BELT ASSEMBLY LH (FOR POWER SEAT)

      Tester Connection Condition Specified Condition
      U4-4 - U4-5 Seat belt is fastened Below 1 Ω
      U4-4 - U4-5 Seat belt is unfastened 10 kΩ or higher
    2. Measure the resistance between the terminals of the front seat inner belt assembly.

      Standard resistance 

      FRONT SEAT INNER BELT ASSEMBLY LH (FOR POWER SEAT) (FRONT SEAT INNER BELT)

      Tester Connection Condition Specified Condition
      A-1 - Q6-2 Always Below 1 Ω
      A-2 - Q6-4 Always Below 1 Ω
  4. INSPECT FRONT SEAT INNER BELT ASSEMBLY LH (for Manual Seat) 
    1. w/ Seat Heater System:
      1. Measure the resistance between the terminals of the switch when the switch is operated.
        Fig 6: Identifying Front Seat Inner Belt Assembly LH (W/ Seat Heater System) Connector Terminals
        G05320158Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

        Standard resistance 

        FRONT SEAT INNER BELT ASSEMBLY LH (FOR MANUAL SEAT)

        Tester Connection Condition Specified Condition
        U1-4 - U1-12 Seat belt is fastened Below 1 Ω
        U1-4 - U1-12 Seat belt is unfastened 10 kΩ or higher
      2. Measure the resistance between the terminals of the front seat inner belt assembly.

        Standard resistance 

        FRONT SEAT INNER BELT ASSEMBLY LH (FOR MANUAL SEAT) (FRONT SEAT INNER BELT)

        Tester Connection Condition Specified Condition
        A-1 - Q6-2 Always Below 1 Ω
        A-2 - Q6-4 Always Below 1 Ω
        U1-1 - v1-3 Always Below 1 Ω
        U1-9 - v1-5 Always Below 1 Ω
        U1-16 - v1-2 Always Below 1 Ω
        U1-17 - v1-4 Always Below 1 Ω
    2. w/o Seat Heater System:
      1. Measure the resistance between the terminals of the switch when the switch is operated.
        Fig 7: Identifying Front Seat Inner Belt Assembly LH (W/O Seat Heater System) Connector Terminals
        G05320159Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

        Standard resistance 

        FRONT SEAT INNER BELT ASSEMBLY LH (FOR MANUAL SEAT)

        Tester Connection Condition Specified Condition
        U1-4 - U1-12 Seat belt is fastened Below 1 Ω
        U1-4 - U1-12 Seat belt is unfastened 10 kΩ or higher
      2. Measure the resistance between the terminals of the front seat inner belt assembly.

        Standard resistance 

        FRONT SEAT INNER BELT ASSEMBLY LH (FOR MANUAL SEAT) (FRONT SEAT INNER BELT)

        Tester Connection Condition Specified Condition
        A-1 - Q6-2 Always Below 1 Ω
        A-2 - Q6-4 Always Below 1 Ω
scientia non olet · About LEMON Manuals