Operation Check of the Front Passenger's Weight Sensor Unit
Operation Check of the Front Passenger's Weight Sensor Unit ('04-05 models) or operate the ODS unit ('06 model)The operation of the front passenger's weight sensor unit ('04-05 models) or operate the ODS unit ('06 model) must be checked after any of these actions.
- Replacement of front passenger's seat component(s) (except weight sensor unit and/or weight sensors)
- After a vehicle collision
Pre-Operation Check Set-up
- Make sure all the components of the front passenger's seat are correctly installed.
- Position the front passenger's seat to the rear most position.
- Adjust the seat recline to the forward most position.
- Do not move the seat from this position.
- Make sure nothing is on or under the front passenger's seat.
- Make sure there is nothing in the front passenger's seat-back pocket.
- Keep the windows closed.
- Perform all calibration procedures except test-driving in the service bay.
- Make sure the vehicle is on level ground.
- Turn the heater and the A/C off.
- Do not touch the passenger's seat during the calibration.
- Do not expose the front passenger's seat to sudden temperature changes.
After Replacing Front Passenger's Seat Component(s)
1. Connect the HDS to the data link connector (DLC) (A).
2. Drive the vehicle, accelerate to 20 mph (36 km/h), then stop on level ground.
3. From the HDS Main Menu, select SRS, then Seat Weight Sensor, then Misc Test, then Inspection. Select "SEAT OUTPUT CHK." in the HDS Inspection Menu. The weight (T0) of the front passenger's seat is recorded by the HDS.
- If the reading on the HDS (T0) is ±6.6 lbs (±3.0 kg), or less, go to step 4.
- If the reading on the HDS (T0) is more than ±6.6 lbs (±3.0 kg), turn the ignition switch OFF, and go to step 1 of "Calibrating the Front Passenger's Weight Sensor Unit ('04-05 models) or operate the ODS unit ('06 model)."
4. Prepare a weight between 55 to 77 lbs (25 to 35 kg), then measure and note its actual weight M) with a scale.
NOTE: The accuracy of the scale must be within ±2.2 lbs (1 kg).
5. Place the prepared weight on the front passenger's seat.
6. Drive the vehicle, and accelerate to 20 mph (36 km/h), then stop on level ground.
7. From the HDS Main Menu, select SRS, then Seat Weight Sensor, then Misc Test, then Inspection. Select "SEAT OUTPUT CHK." in the HDS Inspection Menu. The weight (T1) of the front passenger's seat is recorded by the HDS.
8. Calculate the variance between the weight measured by the scale and the HDS with the formula shown.
Variance = ((T1)-(T0)-(M1))<±8.6 lbs (3.9 kg)
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 on the scale
- If the variance is ±8.6 lbs (±3.9 kg) or less, the check is complete. Go to step 9.
- If the variance is more than ±8.6 lbs (±3.9 kg), remove the seat weight sensors, reinstall them, then repeat this procedure from the beginning.
- If after reinstalling the front passenger's seat weight sensors, the variance is still more than ±8.6 lbs (±3.9 kg), replace the front passenger's weight sensors (if they were not replaced).
9. Turn the ignition switch OFF, and disconnect the HDS from the DLC.
After a vehicle collision
10. Position the front passenger's seat to the rear most position, adjust the receiver to the most forward position. Do not move it from these positions.
11. Connect the HDS to the data link connector (DLC) (A).
12. Drive the vehicle, accelerate to 20 mph (36 km/h), then stop on level ground.
13. From the HDS inspection menu, select Seat Weight Sensor, then "SEAT OUTPUT CHK." The weight (T0) of the front passenger's seat is recorded by the HDS.
- If the reading on the HDS (T0) is ±6.6 lbs (±3.0 kg) or less, go to step 14.
- If the reading on the HDS (T0) is more than ±6.6 lbs (±3.0 kg), remove the seat weight sensors, reinstall them, then repeat steps 1-3.
- If after reinstalling the front passenger's seat weight sensors, the reading on the HDS (T0) is still more than ±6.6 lbs (±3.0 kg), go to step 1 of "Calibrating the Front Passenger's Weight Sensor Unit ('04-05 models) or calibrate the ODS unit ('06 model)".
14. Prepare a weight between 55 to 77 lbs (25 to 35 kg), then measure and note its actual weight (M) with a scale.
NOTE: The accuracy of scale must be within ±2.2 lbs (1 kg).
15. Place the prepared weight on the front passenger's seat.
16. Drive the vehicle, and accelerate to 20 mph (36 km/h), then stop on level ground.
17. From the HDS Inspection Menu, select Seat Weight Sensor, then "SEAT OUTPUT CHK." The weight (T1) of the front passenger's seat is recorded by the HDS.
18. Calculate the variance between the weight measured on the scale and the HDS with the formula shown.
Variance = ((T1)-(T0)-(M1))<±8.6 lbs (3.9 kg)
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 on the scale
- If the variance is ±8.6 lbs (±3.9 kg) or less, the check is complete. Go to step 19.
- If the variance is more than ±8.6 lbs (±3.9 kg), remove the seat weight sensors, and reinstall them, then repeat this procedure from the beginning.
- If after reinstalling the front passenger's seat weight sensors, the variance still more than ±8.6 lbs (±3.9 kg), replace the front passenger's weight sensors and the seat riser, then go to step 1 of "Calibrating the Front Passenger's Weight Sensor Unit ('04-05 models) or calibrate the ODS unit ('06 model)".
19. Turn the ignition switch OFF, and disconnect the HDS from the DLC.