Operation CHARM: Car repair manuals for everyone.

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: Always carry or place a live air bag module with the air bag and deployment door/trim cover/tear seam pointed away from the body. Do not set a live air bag module down with the deployment door/trim cover/tear seam face down. Failure to follow these instructions may result in serious personal injury in the event of an accidental deployment.

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 disassemble or tamper with safety belt buckle/retractor pretensioners or adaptive load limiting retractors or probe the electrical connectors. 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.

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.

NOTE: The air bag warning indicator illuminates when the correct Restraints Control Module (RCM) fuse is removed and the ignition 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 OFF.

3. At the Smart Junction Box (SJB), located in the LH lower kick panel, remove the lower kick panel fuse cover and the RCM fuse 46 (7.5A) from the SJB. For additional information, refer to the Wiring Diagrams. Diagrams By Number

4. Turn the ignition ON and 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 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 Restraint 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. For additional information, refer to Battery.

7. NOTE: Repeat this step for both locking pins.

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. NOTICE: Do not pull the driver air bag module electrical connectors out by the locking buttons. Damage to the locking buttons may 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.





9. Open and lower the glove compartment door. Then unhook the glove compartment door from the instrument panel.
- If equipped, detach the glove compartment door dampener.

Edge

10. Remove the 2 passenger air bag module bolts from the cross vehicle beam bracket.





11. NOTICE: Do not handle the passenger air bag module by grabbing the edges of the air bag trim cover. Damage to the air bag module may occur.

Through the glove compartment opening, release the 4 LH side air bag trim cover clips. Then, release the foreward-most 5 air bag trim cover clips and separate the passenger air bag module from the instrument panel.





12. Using a small screwdriver as shown, lift up and release the locking button on the RH passenger air bag module electrical connector.





13. NOTICE: Do not pull the passenger air bag module electrical connector out by the locking button. Damage to the locking button may occur.

With the RH locking button released, remove the RH electrical connector.

14. Using a small screwdriver as shown, lift up and release the locking button on the LH passenger air bag module electrical connector.





15. NOTICE: Do not pull the passenger air bag module electrical connector out by the locking button. Damage to the locking button may occur.

With the LH locking button released, remove the LH electrical connector and remove the passenger air bag module.

MKX

16. Pull straight out to release the 5 retaining clips and remove the RH instrument panel finish panel.





17. Remove the screw for the LH duct assembly bracket from the front of the instrument panel.





18. Through the glove compartment opening, remove the screw and the LH duct assembly.





19. Through the glove compartment opening, remove the screw and the RH duct assembly.





20. Remove the 4 bolts and the passenger air bag module support bracket.





21. Remove the 3 nuts from the passenger air bag module.





22. NOTICE: Do not allow the passenger air bag module to hang from the wiring harness. Damage to the wiring harness and connectors may occur.

Lower the rear of the passenger air bag module off the 3 mounting studs. Move the passenger air bag module rearward to release the 7 air bag trim cover hooks from the instrument panel and rest the module on the cross vehicle beam.





23. Using a small screwdriver as shown, lift up and release the locking button on the LH passenger air bag module electrical connector.





24. NOTICE: Do not pull the passenger air bag module electrical connector out by the locking button. Damage to the locking button may occur.

With the LH locking button released, remove the LH electrical connector from the passenger air bag module.

25. Using a small screwdriver as shown, lift up and release the locking button on the RH passenger air bag module electrical connector.





26. NOTICE: Do not pull the passenger air bag module electrical connector out by the locking button. Damage to the locking button may occur.

With the RH locking button released, remove the RH electrical connector. Remove the passenger air bag module from the glove compartment opening.

All vehicles

27. From under the rear of the front 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.





28. Remove the passenger side D-pillar trim panel.

29. NOTICE: Do not pull the passenger Safety Canopy(R) module electrical connector out by the locking button. Damage to the locking button may occur.

With the locking button released, remove the electrical connector from the passenger Safety Canopy(R) module.





30. Remove the driver side D-pillar trim panel.

31. NOTICE: Do not pull the driver Safety Canopy(R) module electrical connector out by the locking button. Damage to the locking button may occur.

With the locking button released, remove the electrical connector from the driver Safety Canopy(R) module.





32. From under the rear of the driver seat, detach the driver seat side air bag module electrical connector from the seat cushion frame. Then 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.





33. Install RCM fuse 46 (7.5A) to the SJB.

34. Connect the battery ground cable. For additional information, refer to Battery.


Reactivation

All vehicles

1. Remove RCM fuse 46 (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. Then attach the driver seat side air bag module electrical connector to the seat cushion frame.





4. NOTICE: Do not install the Safety Canopy(R) module electrical connector by the locking button. Damage to the locking button may occur.

NOTICE: The Safety Canopy(R) module electrical connector locking button must be in the released position when the connector is being installed or connector damage may occur.

NOTICE: The Safety Canopy(R) module electrical connector is unique and cannot be reversed when connected to the Safety Canopy(R) module. Match the electrical connector key to the keyway in the Safety Canopy(R) module. Do not force the electrical connector into the Safety Canopy(R) module. Damage to the connector or component may occur.

With the locking button released, install the driver Safety Canopy(R) module electrical connector fully into the driver Safety Canopy(R) module and seat the locking button.





5. Install the driver side D-pillar trim panel.

6. NOTICE: Do not install the Safety Canopy(R) module electrical connector by the locking button. Damage to the locking button may occur.

NOTICE: The Safety Canopy(R) module electrical connector locking button must be in the released position when the connector is being installed or connector damage may occur.

NOTICE: The Safety Canopy(R) module electrical connector is unique and cannot be reversed when connected to the Safety Canopy(R) module. Match the electrical connector key to the keyway in the Safety Canopy(R) module. Do not force the electrical connector into the Safety Canopy(R) module. Damage to the connector or component may occur.

With the locking button released, install the passenger Safety Canopy(R) module electrical connector fully into the passenger Safety Canopy(R) module and seat the locking button.





7. Install the passenger side D-pillar trim panel.

8. Connect the passenger seat side air bag module electrical connector and then slide and engage the seat side air bag electrical connector locking clip.





MKX

9. NOTICE: Do not install the passenger air bag module electrical connectors by the locking buttons. Damage to the locking buttons may 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. Damage to the connector or component may occur.

NOTE: RH side shown, LH similar.

Position the passenger air bag module on the cross vehicle beam. With the locking buttons released, install the 2 passenger air bag module electrical connectors fully into the passenger air bag module and seat the locking buttons.





10. NOTE: During the passenger air bag module installation, make sure all 7 of the air bag trim cover hooks are fully seated in the instrument panel.

Install the passenger 7 air bag trim cover hooks into the instrument panel. Raise the rear of the passenger air bag module onto the 3 mounting studs.





11. Install the 3 passenger air bag module nuts.
- Tighten to 7 Nm (62 lb-in).





12. NOTE: To avoid a squeak or rattle condition, install the passenger air bag module bracket and passenger air bag module bolts in this order.

Install the passenger air bag module support bracket and the 4 bolts.

1. Install the passenger air bag module support bracket and 2 bolts to the cross vehicle beam.
- Tighten to 8 Nm (71 lb-in).

2. Install the inboard passenger air bag module support bracket-to-passenger air bag module bolt.
- Tighten to 8 Nm (71 lb-in).

3. Install the outboard passenger air bag module support bracket-to-passenger air bag module bolt.
- Tighten to 8 Nm (71 lb-in).





13. Install the screw and the RH duct assembly.





14. Install the screw and the LH duct assembly.





15. Install the screw for the LH duct assembly bracket in the front of the instrument panel.





16. NOTE: Make sure the 5 RH instrument panel finish panel retaining clips are fully seated in the instrument panel.

Install the RH instrument panel finish panel.





Edge

17. NOTICE: Do not install the passenger air bag module electrical connectors by the locking buttons. Damage to the locking buttons may 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. Damage to the connector or component may occur.

NOTE: RH side shown, LH similar.

With the locking buttons released, install the 2 passenger air bag module electrical connectors fully into the passenger air bag module and seat the locking buttons.





18. NOTICE: Do not handle the passenger air bag module by grabbing the edges of the air bag trim cover. Damage to the air bag module may occur.

NOTE: During passenger air bag module installation, make sure all the air bag trim cover clips are fully seated in the instrument panel.

Install the passenger air bag module trim cover rear-most clips into the instrument panel first. Then install the side trim cover clips working around to the forward-most clips seating each of them fully into the instrument panel.

19. NOTE: To avoid a squeak or rattle condition, install the 2 passenger air bag module bolts in this order.

Install the 2 passenger air bag module bolts.

1. Install the inboard passenger air bag module bolt.
- Tighten to 8 Nm (71 lb-in).

2. Install the outboard passenger air bag module bolt.
- Tighten to 8 Nm (71 lb-in).





All vehicles

20. Hook the glove compartment door to the instrument panel. Close the glove compartment door.
- If equipped, attach the glove compartment door dampener.

21. NOTICE: Do not install the driver air bag module electrical connectors by the locking buttons. Damage to the locking buttons may 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 passenger air bag module. Do not force the electrical connectors into the passenger air bag module. Damage to the connector or component may occur.

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.





22. 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 to 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.

23. Turn the ignition from OFF to ON.

24. Install RCM fuse 46 (7.5A) to the SJB and install the lower kick panel fuse cover.

25. 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.

26. Prove out the SRS as follows:

Turn the ignition from ON to OFF. Wait 10 seconds, then turn the ignition back to ON and 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 5Hz rate (not configured).

The air bag warning indicator may not illuminate until approximately 30 seconds after the ignition 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 an SRS fault exists, a chime will sound in a pattern of 5 sets of 5 beeps. If this occurs, the air bag warning indicator will need to be repaired before diagnosis can continue.

Clear all continuous DTCs from the RCM and Occupant Classification System Module (OCSM) using a scan tool.