SEAT WEIGHT SENSOR CALIBRATION PROCEDURE
Applicable Models
| Model |
Starting S/N |
Ending S/N |
| 2004 MAZDA3 |
00000000 |
ZZZZZZZZ |
| 2004 MPV |
00000000 |
ZZZZZZZZ |
Certain vehicles may come equipped with a Passenger Air bag Deactivation
(PAD) system. Whenever PAD system components are repaired or replaced,
the seat weight sensors (SWS) must be calibrated. Follow the procedure
below to perform the calibration.
Before starting, have ready the following:
- Temperature meter (or equivalent) to measure ambient temperature
- Voltmeter for measuring battery voltage
- Two (2) 44 pound weights
- Plastic cover to protect seat (do not exceed 0.4 lbs)
Note 1: This procedure must be performed if PAD system components are
repaired or replaced.
Note 2: When "LIGHTLY PAT THE PASSENGER SEAT CUSHION" is displayed on
any WDS screen, lightly pat five times across the headrest or
upper side of the seat back of the passenger side seat.
Note 3: The 44 lb weights must be accurate within 1% to properly
calibrate the seat weight sensors. Mandatory calibrated
weights (in 22 lb/10kg increments) will be shipped to all
dealers with ETA of February 2004.
Begin calibration procedure:
1. Connect WDS to vehicle and turn ignition key ON (do not start
engine), and identify the vehicle specification.
2. Select TOOL BOX
3. Select BODY
4. Select RESTRAINTS
5. Select SEAT WEIGHT SENSOR REZERO PROCEDURE. Press tick.
6. Select option (1) When you have replaced any SWS(s) or SWS
Module, and/or any seat part except SWS. Press tick.
7. Set ignition switch to OFF (Position 0). Press tick.
8. Make sure passenger seat is correctly installed and fully secured
to the vehicle. Press tick.
9. Set the seat slide adjustment to the furthest rearward position.
Do not touch the seat until further instructed. Press tick.
10. Confirm and keep the following conditions (as shown on screen).
NOTE 1: Use voltmeter to measure battery voltage.
NOTE 2: To place seat back in "most forward position", move
forward then back until first click is heard.
Press tick.
11. If vehicle was moved from a different location, at a different
temperature, you must wait the specified time shown on screen
before proceeding. The value "T" is the difference of the
temperatures at:
(1) location vehicle parked
(2) location vehicle is calibrated
NOTE: Use a temperature meter to measure temperatures.
Press tick.
12. Lightly pat the passenger seat cushion. Press tick.
13. Set ignition switch to ON (Position II). Press tick and wait.
14. When screen shows "Would you like to proceed with SWS calibration?"
Select "YES" and wait.
15. Put the specified weight of 44 pounds on the passenger seat
(in the center). NOTE: Use plastic or paper to protect seat.
Press tick.
16. Lightly pat the passenger seat cushion. Do not touch the seat
until further instructed. Press tick and wait.
17. Screen will show: Did you place the specified weight on the
passenger seat? Select "YES".
18. Did you replace both SWSs in this repair? Select "YES".
19. Set the seat slide adjustment to the furthest forward position.
Place the specified weight on the passenger seat. Press tick.
20. Lightly pat the passenger seat cushion. Do not touch until
further instructed. Press tick and wait.
21. Do you wish to calibrate SWS module using an additional weight of
88 pounds? Select "YES".
22. Put the specified weight of 88 pounds on the passenger seat
(in the center). NOTE: It is recommended to add a second 44
pound weight to total 88 pounds (to reduce injury from lifting).
Press tick.
23. Set the seat slide adjustment to the furthest rearward position.
Press tick.
24. Lightly pat the passenger seat cushion. Do not touch the seat
until further instructed. Press tick and wait.
25. Screen will show: Did you place the specified weight on the
passenger seat? Select "YES".
26. Screen will show: Did you replace both SWSs in this repair?
Select "YES".
27. Set the seat slide adjustment to the furthest forward position.
Place the specified weight on the passenger seat. Press tick.
28. Lightly pat the passenger seat cushion. Do not touch the seat
until further instructed. Press tick and wait.
29. Remove the weight (ie: all test weights) from the passenger seat.
NOTE: Remove weights one at a time to reduce injury. Press
tick.
30. Set the seat slide adjustment to the furthest rearward
position. Press tick.
31. Lightly pat the passenger seat cushion. Do not touch
the seat until further instructed. Press tick and wait.
32. Screen shows: Calibration successfully completed! Press tick
to end procedure.
NOTE: Additional changes may be made to these steps in the WDS
software. Look for updates to this MTO, and be sure to
follow screen instructions.
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