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.
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The SRS unit was replaced/updated.
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The front passenger's weight sensor, the front passenger's seat frame, and/or the front passenger's seat rail was replaced/removed.

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 12 volt 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 61 - 93 °F (16 - 34°C).
When the vehicle is exposed to intense cold or intense heat, move the vehicle inside, open the windows and moonroof (if equipped) 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.
If possible, do all of the above 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 output 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 within ±2.1 kg (±4.6 lbs), go to step 3.
If the reading on the HDS (T0) is at or not within ±2.1 kg (±4.6 lbs), do the following and then go to the Front Passenger's Weight Sensor Initialization.
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Confirm that the seat has no interference with surrounding components.
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Remove the front passenger's weight sensors and inspect them for damage. If damage is found, replace the sensors. If no damage is found, reinstall the sensors.
3.
Prepare a weight between 10 kg (22 lbs) ? 20 kg (44 lbs) then measure and note its actual weight (M) with a weight scale.
NOTE:
The accuracy of the weight scale must be within 1 kg (2 lbs).
The weight must be uniform in shape and size to allow precise placement on the seat.
4.
Precisely place the prepared weight on center of the front passenger's seat as shown.
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.
Divide (M) by 2. Write this calculation as "M1" on a piece of paper.
7.
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:
Half of the weight measured by the weight scale.
If the variance is within ±2.2 kg (±4.9 lbs), initialization is complete. Go to step 8.
If the variance is at or not within ±2.2 kg (±4.9 lbs), do the following and then go to the Front Passenger's Weight Sensor Initialization.
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Confirm that the seat has no interference with surrounding components.
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Confirm that the weight was placed precisely in the center of the seat.
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Remove the front passenger's weight sensors and reinstall them.
8.
Turn the vehicle to the OFF (LOCK) mode.