Civic L4-1.8L (2006)
Air Bag Control Module: Testing and Inspection
Operation Check of the ODS Unit
Check the ODS operation after any of these actions.
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Replacement of front passenger's seat component(s) (except ODS unit and/or weight sensors)
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After a vehicle collision
Pre-Operation Check Set-up
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Make sure all the components of the front passenger's seat are correctly installed.
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Position the front passenger's seat to the rearmost position.
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Adjust the seat recline to the forward most position.
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Do not move the seat from this position.
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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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Turn the heater and the A/C off.
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Do not touch the passenger's seat during the calibration.
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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. Make sure the HDS communicates with the vehicle and the SRS unit. If it does not, troubleshoot the DLC circuit.
3. Drive the vehicle, accelerate to 20 mph (36 km/h), then stop on level ground.
4. From the HDS Main Menu, select SRS, then seat weight sensor, then Misc Test, then Inspection. In the HDS Inspection Menu, select "SEAT
OUTPUT CHK." The weight (TO) of the front passenger's seat is recorded by the HDS.
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If the reading on the HDS (TO) is ±6.6 lbs (±3.0 kg), or less, go to step 5.
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If the reading on the HDS (TO) is more than ±6.6 lbs (±3.0 kg), turn the ignition switch OFF, and go to step 1 of "Calibrating the ODS Unit".
5. Prepare a 55 to 77 lbs (25 to 35 kg) weight, 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).
6. Place the prepared weight on the front passenger's seat.
7. Drive the vehicle, and accelerate to 20 mph (36 km/h), then stop on level ground.
8. From the HDS Main Menu, select SRS, then Seat Weight Sensor, then Misc Test, then Inspection. In the HDS Inspection Menu, select "SEAT
OUTPUT CHK." The weight (T1) of the front passenger's seat is recorded by the HDS.
9. Calculate the variance between the weight measured on the scale and the HDS with the formula shown.
Variance = ((T1)-(TO)-(M1))<±8.6 lbs (±3.9 kg)
T1: Weight measured by the HDS with the weight on the seat
TO: Weight measured by the HDS with no load on the seat
M1: Weight measured on the scale
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If the variance is ±8.6 lbs (±3.9 kg) or less, the check is complete. Go to step 10.
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If the variance is more than ±8.6 lbs (±3.9 kg), remove the front passenger's weight sensors, 4-door, 2-door, reinstall them, then repeat this
procedure from the beginning.
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If after reinstalling the front passenger's weight sensors, the variance is still more than ±8.6 lbs (±3.9 kg), replace the front passenger's weight
