Front Passenger's Weight Sensor Output Check After a Vehicle Collision

NOTE:
Check the front passenger's weight sensor output after a vehicle collision, regardless if the airbags and seatbelt tensioners deployed or not.
When any of the following procedures are performed, go to Front Passenger's Weight Sensor Initialization.
?
The SRS unit was replaced/updated.
?
The front passenger's weight sensor, the front passenger's seat frame, and/or the front passenger's seat rail was replaced/removed.

1. HDS - Connect
1.
Turn the ignition switch to LOCK (0), or press the engine start/stop button to select the OFF mode.
2.
Connect the HDS to the data link connector (DLC) (A) located under the driver's side of the dashboard.
3.
Turn the ignition switch to ON (II), or press the engine start/stop button to select the ON mode.


2. Front Passenger's Weight Sensor - Output Check After a Vehicle Collision

NOTE:
Before doing this procedure, clear the DTCs.
Before doing this procedure, make sure the battery is fully charged.
Make sure the front passenger's seat and all components of the seat are correctly installed.
Make sure nothing is on the front passenger's seat, including aftermarket seat covers or mats.
Make sure there is nothing in the front passenger's seat-back pocket.
Make sure the vehicle is on level ground.
When you perform this procedure, the vehicle temperature must be between 41 - 113 °F (5 - 45°C).
When the vehicle is exposed to intense cold and intense heat, move the vehicle inside and perform this procedure after one hour or more.
Do not expose the front passenger's seat to sudden temperature changes.
Do not use the A/C and the heater.
Do not touch the front passenger's seat and keep the vehicle stationary during this procedure.
Do not attach the seat belt tongue into the buckle.
Keep the windows and the moonroof closed (if equipped).
Do all this procedures inside.
1.
Position the front passenger's seat all the way rearward and lowermost (if equipped with the height adjuster), then adjust the seat-back to the forward most position.
NOTE: Do not move the seat from this position until the operation check is completed.
2.
From SRS of the System Selection Menu, select SRS/SWS, then Data List. In the Data List, select FRONT PASSENGER'S WEIGHT. The weight (T0) of the front passenger's seat is displayed by the HDS. Write this measurement down as "T0" on a piece of paper.
If the reading on the HDS (T0) is ±7.3 lbs (±3.3 kg) or less, go to the next step.
If the reading on the HDS (T0) is more than ±7.3 lbs (±3.3 kg), remove the seat weight sensors, and reinstall them, then go to the Front Passenger's Weight Sensor Initialization.
3.
Prepare a weight of 22 lbs (10 kg) then measure and note its actual weight (M1) with a weight scale.
NOTE: The accuracy of the weight scale must be within ±2.2 lbs (1.0 kg).
4.
Place the prepared weight on the front passenger's seat.
5.
From the Data List, select FRONT PASSENGER'S WEIGHT. The weight (T1) of the front passenger's seat is displayed by the HDS. Write this measurement down as "T1".
6.
Calculate the variance between the weight measured by the weight scale and the HDS with the formula.
Variance = ((T1)?(T0)?(M1))
 
T1:
Weight measured by the HDS with the weight on the seat.
T0:
Weight measured by the HDS with no load on the seat.
M1:
Weight measured by the weight scale.
If the variance is ±7.3 lbs (±3.3 kg) or less, the check is complete. Go to the next step.
If the variance is more than ±7.3 lbs (±3.3 kg), remove the seat weight sensors, and reinstall them, then go to the Front Passenger's Weight Sensor Initialization.
7.
Turn the ignition switch to LOCK (0), or press the engine start/stop button to select the OFF mode.