Occupant Classification System: Initialization: Initialization

HINT: 

Perform 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 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 a 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. Check that all 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 Component	Position
      Slide Direction	Rearmost position
      Reclining Angle	Upright position
      Headrest Height	Lowest position
      Lifter Height	Lowest position

   3. Connect the Techstream to the DLC3.
   4. Turn the ignition switch to the ON position.
   5. Perform zero point calibration by following the prompts on the Techstream screen.

      HINT: 

      • Enter the following menus: Body Electrical / Occupant Detection / Utility / Zero Point Calibration.
      • Refer to the Techstream operator's manual for further details.
      • If the zero point calibration does not complete, replace the front seat with adjuster frame assembly RH.

      OK

      "Zero Point Calibration is complete" is displayed.

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

      HINT: 

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

   7. Confirm that the beginning sensor reading is within the standard range.

      Standard values

      -3.2 to 3.2 kg (-7 to 7 lb)

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

      Standard values

      27 to 33 kg (59.52 to 72.75 lb)

      HINT: 

      • When performing sensitivity check, use a solid metal weight (the check result may not appear properly if a liquid weight is used).
      • If the sensitivity deviates from the standard range, retighten the bolts of the front passenger seat without deforming the seat rail. After performing this procedure, if the sensitivity is not within the standard range, replace the front seat with adjuster frame assembly RH.