DESCRIPTION
Zero point of the occupant classification sensors may deviate in the following situations. To ensure sensor accuracy, be sure to perform Zero Point Calibration.
The occupant detection ECU is replaced.
Tech Tips
As the zero point is not automatically stored in a new occupant detection ECU, it is necessary to perform zero point calibration after replacing the occupant detection ECU.
Accessories (seatback tray, seat cover, etc.) are installed.
Tech Tips
As the weight of accessories will be added to the weight of the occupant, the system will not be able to perform classification accurately.
The front passenger seat is removed from the vehicle.
Tech Tips
As the seat frame will warp slightly when the bolts that are used to install the front passenger seat are tightened, the load applied to the occupant classification sensor will change and the system will not be able to perform classification accurately.
Any of the bolts that are used to install the front passenger seat are removed and reinstalled.
Tech Tips
As the seat frame will warp slightly when the bolts that are used to install the front passenger seat are tightened, the load applied to the occupant classification sensor will change and the system will not be able to perform classification accurately.
The passenger airbag ON/OFF indicator ("ON") illuminates when the front passenger seat is not occupied.
Tech Tips
If any load or pressure is applied to the occupant classification sensors, the system will not be able to perform classification accurately.
The vehicle is brought to the workshop for repair due to an accident or a collision.
Tech Tips
If the seat frame or vehicle floor has become deformed and additional pressure is applied to the occupant classification sensor, the system will not be able to perform classification accurately.
Note
Make sure that the front passenger seat is not occupied before performing the operation.
ZERO POINT CALIBRATION
Zero point calibration procedure
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.
No objects are touching the front passenger seat.
Adjust the seat position according to the table below.
Adjustment Item | Position |
---|---|
Slide Direction | Rearmost position |
Headrest Height | Lowest position |
Recline Angle | Upright position |
Turn the power switch off.
Connect the GTS to the DLC3.
Turn the power switch on (IG).
Turn the GTS on.
Enter the following menus: Body Electrical / Occupant Detection / Utility / Zero Point Calibration.
Tester Display |
---|
Zero Point Calibration |
Perform zero point calibration 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 normally, perform this procedure again. If zero point calibration cannot be completed normally, replace the front seat adjuster assembly RH.