Accord L4-2.4L (2005)
Seat Occupant Sensor: Service and Repair
Calibrating the Front Passenger's Weight Sensor Unit
Calibrating the Front Passenger's Weight Sensor Unit
When the front passenger's weight sensors and/or weight sensor unit is replaced, calibrate the weight sensor unit by following the procedure below.
While calibrating the front passenger's weight sensor unit, observe these precautions:
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Make sure all components of the front passenger's seat are correctly installed.
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Make sure all optional parts such as seat covers are removed.
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Make sure nothing is on or under the front passenger's seat.
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Make sure there is nothing in the front passenger's seat-back pocket.
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Keep the windows closed.
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Perform all calibration procedures except test driving in the service bay.
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Make sure the vehicle is on level ground.
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Keep the A/C and the heater off.
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Do not touch the front passenger's seat until you drive the vehicle.
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Do not expose the front passenger's seat to sudden temperature changes.
1. Position the front passenger's seat to the rear most position, adjust the seat height to the lowest position, and adjust the recliner to the most forward
position. Do not move from these positions.
2. Connect the HDS to the data link connector (DLC) (A).
3. Drive the vehicle, and accelerate to 20 mph (36 km/hr), then stop on level ground.
4. From the Main Menu, select SRS, then seat weight sensor, then Misc Test, then adjustments. Select "SWS INIT" in the Adjustment Menu and
follow the prompts unit the initialization operation has been completed between the seat weight sensor unit and the sensor.
5. Prepare a weight between 55 to 77 lbs (25 to 35 kg) then measure and note its actual weight (M) with a weight scale.
NOTE: The accuracy of the weight scale must be within ±2.2 lbs (1 kg).
6. Place the prepared weight on the front passenger's seat.
NOTE: Leave the tester connected in the Misc Menu.
7. Drive the vehicle, and accelerate to 20 mph (36 km/hr), then stop on level ground.
8. From the HDS's Main Menu, select SRS, then seat weight sensor, then Misc Test, then Inspection. Select "SEAT OUTPUT CHK." in the HDS's
Inspection Menu. The weight (T) of the front passenger's seat is recorded by the HDS.
9. Calculate the variance between the weight measured by the weight scale (M) and the HDS (T) with the formula below.
Variance = (T) - (M) < ±8.6 lbs (3.9 kg)
M: Weight measured by the weight scale
T: Weight measured by the HDS with the weight on the seat
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If the variance is ±8.6 lbs (±3.9 kg) or less, calibration is complete. Go to step 17.
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If the variance is more than ±8.6 lbs (±3.9 kg), remove the seat weight sensors, and reinstall them, then go to step 10.
10. Remove weight from the front passenger's seat.
11. Drive the vehicle, accelerate to 20 mph (36 km/hr), then stop on level ground.
12. 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 tester.
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If the reading on the HDS (T0) is ±6.6 lbs (±3.0 kg) or less, go to step 13.
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If the reading on the tester (T0) is more than ±6.6 lbs (±3.0 kg), repeat this procedure from the beginning.