Supplemental Restraint System (SRS) Deactivation and Reactivation
Supplemental Restraint System (SRS) Deactivation and Reactivation
Deactivation
WARNING: Always wear eye protection when servicing a vehicle. Failure to follow this instruction may result in serious personal injury.
WARNING: To reduce the risk of accidental deployment, do not use any memory saver devices. Failure to follow this instruction may result in serious personal injury or death.
WARNING: Never probe the electrical connectors on air bag, Safety Canopy(R) or side air curtain modules. Failure to follow this instruction may result in the accidental deployment of these modules, which increases the risk of serious personal injury or death.
WARNING: Never probe the electrical connectors on safety belt buckle/retractor pretensioners or adaptive load limiting retractors. Failure to follow this instruction may result in the accidental deployment of the safety belt pretensioners or adaptive load limiting retractors, which increases the risk of serious personal injury or death.
NOTE: The air bag warning indicator illuminates when the correct Restraints Control Module (RCM) fuse is removed and the ignition switch is ON.
NOTE: The Supplemental Restraint System (SRS) must be fully operational and free of faults before releasing the vehicle to the customer.
All vehicles
1. Turn all vehicle accessories OFF.
2. Turn the ignition switch to OFF.
3. At the Smart Junction Box (SJB), located below the LH side of the instrument panel, remove the cover and the RCM fuse 25 (7.5A) from the SJB. For additional information, refer to the Wiring Diagrams.
4. Turn the ignition ON and visually monitor the air bag warning indicator for at least 30 seconds. The air bag warning indicator will remain lit continuously (no flashing) if the correct RCM fuse has been removed. If the air bag warning indicator does not remain lit continuously, remove the correct RCM fuse before proceeding.
5. Turn the ignition switch to OFF.
6. WARNING: Always deplete the backup power supply before repairing or installing any new front or side air bag supplemental restraint system (SRS) component and before servicing, removing, installing, adjusting or striking components near the front or side impact sensors or the restraints control module (RCM). Nearby components include doors, instrument panel, console, door latches, strikers, seats and hood latches.
Refer to the Description and Operation portion of Air Bag Systems for location of the RCM and impact sensor(s).
To deplete the backup power supply energy, disconnect the battery ground cable and wait at least 1 minute. Be sure to disconnect auxiliary batteries and power supplies (if equipped).
Failure to follow these instructions may result in serious personal injury or death in the event of an accidental deployment.
Disconnect the battery ground cable and wait at least one minute.
7. NOTE: There are 2 locking pins that retain the driver air bag module to the steering wheel.
Using a 3-mm Allen wrench or a suitable tool through the access hole on the backside of the steering wheel, position the tool against the spring clip and push in, disengaging the clip from the locking pin. With the spring clip disengaged from the locking pin, gently pull back on that side of the driver air bag module to release it from the steering wheel.
8. Repeat the previous step for the second locking pin.
9. NOTICE: Do not pull the driver air bag module electrical connectors out by the locking buttons. Damage to the locking buttons can occur.
Using a small screwdriver as shown, lift up and release the locking buttons on the driver air bag module electrical connectors. With the locking buttons released, remove the electrical connectors and the driver air bag module.
10. Open the glove compartment door and release the door damper cable, then fully lower the glove compartment door.
Fusion and Milan
11. Remove the 2 passenger air bag module bolts.
12. NOTICE: Do not handle the passenger air bag module by grabbing the edges of the deployment doors. Damage to the passenger air bag module may occur.
Release the deployment door clips from the instrument panel and then remove the passenger air bag module from the instrument panel.
MKZ
13. Remove the instrument panel end panel.
14. NOTE: Illustration shows the location of the 5 RH instrument panel trim panel nuts located inside of the instrument panel.
Through the glove compartment opening and the side of the instrument panel, remove the 5 RH instrument panel trim panel nuts on the inside of the instrument panel.
15. Pull out releasing the 2 retaining clips and remove the RH instrument panel trim panel.
16. Through the glove compartment opening, remove the 2 passenger air bag module bolts.
17. NOTICE: Do not handle the passenger air bag module by grabbing the edges of the deployment doors. Damage to the passenger air bag module may occur.
Through the glove compartment opening, release the deployment door clips from the instrument panel and then remove the passenger air bag module from the instrument panel.
All vehicles
18. NOTE: Fusion and Milan shown, MKZ similar.
NOTE: RH shown, LH similar.
Using a small screwdriver as shown, lift up and release the locking buttons on the passenger air bag module electrical connectors.
19. NOTICE: Do not pull the passenger air bag module electrical connectors out by the locking buttons. Damage to the locking buttons can occur.
NOTE: Fusion and Milan shown, MKZ similar.
NOTE: RH shown, LH similar.
With the locking buttons released, remove the electrical connectors and the passenger air bag module.
20. From under the rear of the passenger seat, slide and disengage the passenger seat side air bag module electrical connector locking clip, and then release the tab and disconnect the passenger seat side air bag module electrical connector.
21. Remove the RH C-pillar trim cover retainer cap.
22. Remove the retainer and RH C-pillar trim cover.
23. Disconnect the RH side air curtain module electrical connector.
24. Remove the LH C-pillar trim cover retainer cap.
25. Remove the retainer and LH C-pillar trim cover.
26. Disconnect the LH side air curtain module electrical connector.
27. From under the rear of the driver seat, slide and disengage the driver seat side air bag module electrical connector locking clip, and then release the tab and disconnect the driver seat side air bag module electrical connector.
28. Install RCM fuse 25 (7.5A) to the SJB.
29. Connect the battery ground cable.
Reactivation
All vehicles
1. Remove RCM fuse 25 (7.5A) from the SJB.
2. Disconnect the battery ground cable and wait at least one minute.
3. Connect the driver seat side air bag module electrical connector and then slide and engage the seat side air bag electrical connector locking clip.
4. Connect the LH side air curtain module electrical connector.
5. Install the LH C-pillar trim cover and retainer.
6. Install the LH C-pillar trim cover retainer cap.
7. Connect the RH side air curtain module electrical connector.
8. Install the RH C-pillar trim cover and retainer.
9. Install the RH C-pillar trim cover retainer cap.
10. Connect the passenger seat side air bag module electrical connector and then slide and engage the seat side air bag electrical connector locking clip.
11. NOTICE: Do not install the passenger air bag module electrical connectors by the locking buttons. Damage to the locking buttons can occur.
NOTICE: The passenger air bag module electrical connector locking buttons must be in the released position when the connector is being installed, or connector damage may occur.
NOTICE: The passenger air bag module electrical connectors are unique and cannot be reversed when connected to the passenger air bag module. Match the electrical connector key to the keyway in the passenger air bag module. Do not force the electrical connectors into the passenger air bag module.
NOTE: RH shown, LH similar.
With the locking buttons released, install the passenger air bag module electrical connectors fully into the passenger air bag module and seat the locking buttons.
MKZ
12. NOTICE: Do not handle the passenger air bag module by grabbing the edges of the deployment door. Damage to the passenger air bag module may occur.
NOTE: During air bag module installation, make sure all the deployment door clips are fully seated in the instrument panel.
Install the passenger air bag module into the instrument panel.
13. Through the glove compartment opening, install the 2 passenger air bag module bolts.
- Tighten to 8 Nm (71 lb-in).
14. Align the 2 retaining clips and install the RH instrument panel trim panel.
15. Through the glove compartment opening and the side of the instrument panel, install the 5 RH instrument panel trim panel nuts on the inside of the instrument panel.
16. Install the instrument panel end panel.
Fusion and Milan
17. NOTICE: Do not handle the passenger air bag module by grabbing the edges of the deployment doors. Damage to the passenger air bag module may occur.
NOTE: During air bag module installation, make sure all the deployment door clips are fully seated in the instrument panel.
Install the passenger air bag module into the instrument panel.
18. Install the 2 passenger air bag module bolts.
- Tighten to 8 Nm (71 lb-in).
19. Attach the glove compartment door damper cable and close the glove compartment door.
All vehicles
20. NOTICE: Do not install the driver air bag module electrical connectors by the locking buttons. Damage to the locking buttons can occur.
NOTICE: The driver air bag module electrical connector locking buttons must be in the released position when the connector is being installed, or connector damage may occur.
NOTICE: The driver air bag module electrical connectors are unique and cannot be reversed when connected to the driver air bag module. Match the electrical connector key to the keyway in the driver air bag module. Do not force the electrical connectors into the driver air bag module.
With the locking buttons released, install the driver air bag module electrical connectors fully into the driver air bag module and seat the locking buttons.
21. NOTE: Audible clicks will be heard when both wire clips are seated in the driver air bag module.
Align the driver air bag module locking pins to the steering wheel and, while pushing inward, seat the 2 driver air bag module locking pins in the steering wheel wire clips.
- When the 2 locking pins are seated in place, there should be an even gap between the driver air bag module trim cover and the steering wheel.
22. Turn the ignition switch from OFF to ON.
23. Install RCM fuse 25 (7.5A) to the SJB and close the cover.
24. WARNING: Make sure no one is in the vehicle and there is nothing blocking or placed in front of any air bag module when the battery is connected. Failure to follow these instructions may result in serious personal injury in the event of an accidental deployment.
Connect the battery ground cable.
25. Prove out the SRS as follows:
Turn the ignition switch from ON to OFF. Wait 10 seconds, then turn the ignition switch back to ON and visually monitor the air bag warning indicator with the air bag modules installed. The air bag warning indicator will light continuously for approximately 6 seconds and then turn OFF. If an air bag SRS fault is present, the air bag warning indicator will:
- fail to light.
- remain lit continuously.
- flash at a 5 Hz rate (RCM not configured).
The air bag warning indicator might not light until approximately 30 seconds after the ignition switch has been turned from the OFF to the ON position. This is the time required for the RCM to complete the testing of the SRS. If the air bag warning indicator is inoperative and a fault exists, a chime will sound in a pattern of 5 sets of 5 beeps. If this occurs, the air bag warning indicator and any SRS fault discovered must be diagnosed and repaired.
Clear all continuous DTCs from the RCM and Occupant Classification System Module (OCSM) using a scan tool.