FixVault

Supplemental Restraint System - Diagnostics: Initialization

Fig 1: Connecting Hand-Held Tester To DLC3
G02677338Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  1. ZERO POINT CALIBRATION AND SENSITIVITY CHECK 
    NOTE: Make sure that the seat is not occupied before performing the operation.

    HINT:

    Perform the zero point calibration and sensitivity check if any of the following conditions occur.

    • The occupant classification ECU is replaced.
    • Accessories (seatback tray and seat cover, etc.) are installed.
    • The passenger seat is removed from the vehicle.
    • The passenger airbag ON/OFF indicator ("OFF") comes on when the passenger seat is not occupied.
    • The vehicle is brought to the workshop for repair due to an accident or a collision.
    1. Zero point calibration and sensitivity check procedures.

    HINT:

    Make sure that zero point calibration has finished normally, and then perform the sensitivity check.

    1. Adjust the seat position according to the table below.
      ADJUSTMENT COMPONENT POSITION

      Adjustment Component Position
      Slide Direction Rearmost position
      Reclining Angle Upright position
      Headrest Height Lowest position
    2. Connect the hand-held tester to the DLC3.
    3. Turn the ignition switch to the ON position.
    4. Perform the zero point calibration by following the prompts on the tester screen shown later.

      HINT:

      Refer to the hand-held tester operator's manual for further details.

      OK: "COMPLETE" is displayed. 

    5. Perform the sensitivity check by following the prompts on the tester screen shown in later.
    6. Confirm that the beginning sensor reading is within the standard value.

      Standard value: -3.2 to 3.2 kg (-7 to 7 lb) 

    7. Place a 30 kg (66.14 lb) weight (eg. a 30 kg (66.14 lb) of lead mass) onto the passenger seat.
    8. Confirm that the sensitivity is within the standard value.

      Standard value: 27 to 33 kg (59.52 to 72.75 lb) 

    HINT:

    • When performing the sensitivity check, use a solid metal weight (the check result may not appear properly if the weight made from liquid is used).
    • When the sensitivity deviates from the standard value, retighten the bolts of the passenger seat taking care not to deform the seat rail. After performing this procedure, if the sensitivity is not within the standard value, replace the front seat w/adjuster frame assy RH.
    • When zero point calibration has not finished normally, replace the front seat W/adjuster frame assy RH.
Fig 2: Zero Point Calibration Procedure Flow Chart
G02677339Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
Fig 3: Sensitivity Check Procedure Flow Chart
G02677340Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002