Acura RL. Manual - part 110

3. Drive the vehicle, and accelerate to 20 mph (36 km/h), then stop on level ground.

4. From the Main Menu on the HDS, select SRS, then seat weight sensor, then Misc Test, then

Adjustments. In the Adjustment Menu, select "SWS UNIT," and follow the prompts until the
initialization operation has been completed.

5. Prepare a 55 to 77 lbs (25 to 35 kg) weight, then measure and note its actual weight (M) with a scale.

6. Place the 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's Main Menu, select SRS, then Seat Weight Sensor, then Misc Test, then Inspection. In

the HDS Inspection Menu, select "SEAT OUTPUT CHK." The weight (T) of the front passenger's
seat is recorded by the HDS.

9. Calculate the variance between the weight measured on the scale (M) and the HDS (T) with the

formula shown.

Variance = (T) - (M)< ± 8.6 lbs (3.9 kg)

M: Weight measured on the scale

T: Weight measured by the HDS with the weight on the seat



If the variance is ± 8.6 lbs (± 3.9 kg) or less, calibration is complete. Go to step 18.



If the variance is more than ± 8.6 lbs (± 3.9 kg), remove the front passenger's weight sensors
(see FRONT PASSENGER'S WEIGHT SENSOR REPLACEMENT ), and reinstall them,
then go to step 10.

10. Remove the weight from the front passenger's seat.

11. Drive the vehicle, accelerate to 20 mph (36 km/h), 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 HDS.



If the reading on the HDS (T0) is ± 6.6 lbs (± 3.0 kg) or less, go to step 13.



If the reading on the HDS (T0) is more than ± 6.6 lbs (± 3.0 kg), repeat this procedure from the
beginning.

13. Measure and note the prepared weight (M1) again with a scale.

14. Place the weight on the front passenger's seat.

15. Drive the vehicle, accelerate to 20 mph (36 km/h), then stop on level ground.

16. 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.

17. Calculate the variance between the weight measured on the scale and the HDS with the formula

shown.

Variance = (T1)-(M1)< ± 8.6 lbs (3.9 kg)

NOTE:

The accuracy of the scale must be within ± 2.2 lbs (1 kg).

NOTE:

Leave the HDS connected and in the Misc Menu.

2007 Acura RL

2005-08 RESTRAINTS SRS (Supplemental Restraint System) - RL

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T1: Weight measured by the HDS with the weight on the seat

M1: Weight measured on the scale.



If the variance is ± 8.6 lbs (± 3.9 kg) or less, calibration is complete. Go to step 18.



If the variance is more than ± 8.6 lbs (± 3.9 kg), replace the front passenger's weight sensors (if
they were not replaced before this procedure), and repeat this procedure from the beginning.

18. Turn the ignition switch OFF, and disconnect the HDS from the DLC.

FRONT PASSENGER'S WEIGHT SENSOR UNIT OPERATION CHECK

Check the operation of the front passenger's weight sensor unit operation 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 rearmost position. Adjust the seat height to the lowest
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.



Do 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.



Make sure all aftermarket devices such as amplifiers, fluorescent light, air purifiers, CB or HAM
radios, etc, are turned off.

After Replacing Front Passenger's Seat Component(s)

1. Connect the HDS to the data link connector (DLC) (A).

2007 Acura RL

2005-08 RESTRAINTS SRS (Supplemental Restraint System) - RL

Friday, June 05, 2009 2:21:55 PM

Page 25

Fig. 39: Identifying Data Link Connector
Courtesy of AMERICAN HONDA MOTOR CO., INC.

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. In

the HDS Inspection Menu, select "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 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."

4. Prepare a 55 to 77 lbs (25 to 35 kg) weight, then measure and note its actual weight (M) on a scale.

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. In

the HDS Inspection Menu, select "SEAT OUTPUT CHK." The weight (T1) of the front passenger's
seat is recorded by the HDS.

8. Calculate the variance between the weight measured on the scale and the HDS with the formula.

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 front passenger's weight sensors
(see FRONT PASSENGER'S WEIGHT SENSOR REPLACEMENT ), reinstall them, then
repeat this procedure from the beginning.



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 sensors (if they were not replaced).

NOTE:

The accuracy of the scale must be within ± 2.2 lbs (1 kg).

2007 Acura RL

2005-08 RESTRAINTS SRS (Supplemental Restraint System) - RL

Friday, June 05, 2009 2:21:55 PM

Page 26

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 rearmost position, adjust the recliner to the most forward

position. Do not move it from these positions.

11. Connect the HDS to the data link connector (DLC) (A).

Fig. 40: Identifying Data Link Connector
Courtesy of AMERICAN HONDA MOTOR CO., INC.

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 front passenger's
weight sensors, reinstall them, then repeat steps 1 -



If after reinstalling the front passenger's 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."

14. Prepare a 55 to 77 lbs (25 to 35 kg) weight, then measure and note its actual weight (M) on a scale.

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.

NOTE:

The accuracy of the scale must be within ± 2.2 lbs (1 kg).

2007 Acura RL

2005-08 RESTRAINTS SRS (Supplemental Restraint System) - RL

Friday, June 05, 2009 2:21:55 PM

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