LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Lexus >> 2003 >> ES 300 >> Repair and Diagnosis >> Restraints >> Restraints Control Systems >> Seat Belt >> Inspection
April 5, 2026: LEMON Manuals is launched! Read the announcement.

Seat Belt: Inspection

  1. INSPECT FRONT SEAT INNER BELT ASSY LH 
    1. When fastening the seat belt (Buckle switch is ON).
      1. Inspect the continuity and resistance between the terminals.

        Standard: 

        TERMINAL NO. AND SPECIFIED CONDITION CHART

        Terminal No. Specified condition
        A1 <=> A4 330 Ω
        A1 <=> A6 Continuity
        A2 <=> B2 Continuity
        A5 <=> B1 Continuity

        If the result is not as specified, replace the front seat inner belt assembly.

        Fig 1: Identifying Connector Terminals Of Front Seat Inner Belt Assy LH
        G03373016Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. When releasing the seat belt (Buckle switch is OFF).
      1. Inspect the continuity and resistance between the terminals.

        Standard: 

        TERMINAL NO. AND SPECIFIED CONDITION CHART

        Terminal No. Specified condition
        A1 <=> A4 1,330 Ω
        A1 <=> A6 No continuity
        A2 <=> B2 Continuity
        A5 <=> B1 Continuity

        If the result is not as specified, replace the front seat inner belt assembly.

        Fig 2: Identifying Connector Terminals Of Front Seat Inner Belt Assy LH
        G03373017Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  2. INSPECT FRONT SEAT INNER BELT ASSY RH 
    1. Short between connector terminals 1 and 3 of the occupation sensor.
      Fig 3: Identifying Connector Terminals Of Front Seat Inner Belt Assy RH
      G03373018Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. When fastening the seat belt (Buckle switch is ON).
      1. Inspect the continuity and resistance between the terminals.

        Standard: 

        TERMINAL NO. AND SPECIFIED CONDITION CHART

        Terminal No. Specified condition
        1 <=> 6 Continuity
        1 <=> 4 No continuity
        2 <=> 5 Continuity

        If the result is not as specified, replace the front seat inner belt assembly.

        Fig 4: Identifying Connector Terminals Of Front Seat Inner Belt Assy LH
        G03373019Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    3. When releasing the seat belt (Buckle switch is OFF).
      1. Inspect the continuity and resistance between the terminals.

        Standard: 

        TERMINAL NO. AND SPECIFIED CONDITION CHART

        Terminal No. Specified condition
        1 <=> 6 No continuity
        1 <=> 4 Continuity
        2 <=> 5 Continuity
        Fig 5: Identifying Connector Terminals Of Front Seat Inner Belt Assy LH
        G03373020Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

        If the result is not as specified, replace the front seat inner belt assembly.

    4. Release the between terminals 1 and 3 of the occupation sensor connector.
      Fig 6: Identifying Connector Terminals Of Front Seat Inner Belt Assy RH
      G03373021Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    5. When fastening the seat belt (Buckle switch is ON).
      1. Inspect the continuity and resistance between the terminals.

        Standard: 

        TERMINAL NO. AND SPECIFIED CONDITION CHART

        Terminal No. Specified condition
        1 <=> 6 Continuity
        1 <=> 4 No continuity
        2 <=> 5 No continuity

        If the result is not as specified, replace the front seat inner belt assembly.

        Fig 7: Identifying Connector Terminals Of Front Seat Inner Belt Assy LH
        G03373022Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    6. When releasing the seat belt (Buckle switch is OFF).
      1. Inspect the continuity and resistance between the terminals.

        Standard: 

        TERMINAL NO. AND SPECIFIED CONDITION CHART

        Terminal No. Specified condition
        1 <=> 6 No continuity
        1 <=> 4 Continuity
        2 <=> 5 No continuity

        If the result is not as specified, replace the front seat inner belt assembly.

        Fig 8: Identifying Connector Terminals Of Front Seat Inner Belt Assy LH
        G03373023Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  3. INSPECT FRONT SEAT OUTER BELT ASSY LH 
    1. Inspect the operation.
      1. Connecting the battery positive to terminal 1 and the battery negative to terminal 2, check the operating noise that the magnetized solenoid is attracting the plunger.
      2. Check that the rewinding volume of the seat belt will increase when the seat belt is pulled out and the battery negative is disconnected.
        Fig 9: Identifying Connector Terminals Of Front Seat Outer Belt Assy LH
        G03373024Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
        NOTE: Do not apply battery voltage to the pretensioner connector.

        If the result is not as specified, replace the front seat outer belt assembly.

  4. INSPECT FRONT SEAT OUTER BELT ASSY RH 
    1. Inspect the operation.
      1. Connecting the battery positive to terminal 1 and the battery negative to terminal 2, check the operating noise that the magnetized solenoid is attracting the plunger.
      2. Check that the rewinding volume of the seat belt will increase when the seat belt is pulled out and the battery negative is disconnected.
        Fig 10: Identifying Connector Terminals Of Front Seat Outer Belt Assy RH
        G03373025Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
        NOTE: Do not apply battery voltage to the pretensioner connector.

        If the result is not as specified, replace the front seat outer belt assembly.

scientia non olet · About LEMON Manuals