OCCUPANT CLASSIFICATION SYSTEM INITIALIZATION

Note

Make sure that the front passenger seat is not occupied before performing the operation.

Tech Tips


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

  • The occupant detection ECU is replaced.

  • Accessories (seatback tray and seat cover, etc.) are installed.

  • The front passenger seat is removed from the vehicle.

  • The passenger airbag ON/OFF indicator ("OFF") comes on when the front 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


    1. Zero point calibration and sensitivity check procedure

      Tech Tips

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


      1. Check that both of the following conditions are met:


        • The vehicle is parked on a level surface.

        • No objects are placed on the front passenger seat.

        • The front passenger seat belt buckle switch is off.

      2. Adjust the seat position according to the table below.

        Adjustment Item Position
        Slide Direction Rearmost position
        Recline Angle Upright position
        Headrest Height Lowest position

      3. Turn the ignition switch off.

      4. GTS to the DLC3.

      5. Turn the ignition switch to ON.

      6. Turn the GTS on.

      7. Enter the following menus: Body Electrical / Occupant Detection / Utility / Zero Point Calibration.

      8. Perform zero point calibration and sensitivity check by following the prompts on the GTS screen.

        Tech Tips


        • Refer to the GTS operator's manual for further details.

        • If zero point calibration does not complete, replace the separate type front seat cushion spring assembly*1 and front seat adjuster assembly RH*2.


          • *1: for RHD

          • *2: for LHD

      9. SENSITIVITY CHECK


        1. Sensitivity check procedure


          1. Turn the ignition switch off.

          2. Connect the GTS to the DLC3.

          3. Turn the ignition switch to ON.

          4. Turn the GTS on.

          5. Enter the following menus: Body Electrical / Occupant Detection / Utility / Sensitivity Check.

          6. Perform sensitivity check by following the prompts on the GTS screen.

            Tech Tips

            Refer to the GTS operator's manual for further details.

          7. Confirm that the initial sensor reading is within the specified range.

      10. Place a 30 kg (66.1 lb) weight (e.g. a 30 kg (66.1 lb) of lead mass) onto the front passenger seat.

      11. Confirm that sensitivity is within the specified range.

        12. Tech Tips


        • When performing sensitivity check, use a solid metal weight (the check result may not appear properly if a liquid weight is used).

        • If sensitivity deviates from the specified range, retighten the bolts of the front passenger seat without deforming the seat rail. After performing this procedure, if sensitivity is not within the specified range, replace the separate type front seat cushion spring assembly*1 and front seat adjuster assembly RH*2.


          • *1: for RHD

          • *2: for LHD