Operation CHARM: Car repair manuals for everyone.
Home >> Ford >> 2005 >> F 150 4WD Pickup V8-5.4L SOHC VIN 5 >> Repair and Diagnosis >> Steering and Suspension >> Steering >> Steering Column >> Air Bag(s) Arming and Disarming >> Service and Repair >> Air Bag Disarming and Arming >> Deactivation and Reactivation

Deactivation and Reactivation

SUPPLEMENTAL RESTRAINT SYSTEM (SRS) DEACTIVATION AND REACTIVATION


Special Tool(s):






Special Tool(s)

Deactivation

WARNING:
- Always wear safety glasses when repairing an air bag supplemental restraint system (SRS) vehicle and when handling an air bag module. This will reduce the risk of injury in the event of an accidental deployment.
- Carry a live air bag module with the air bag and trim cover pointed away from your body. This will reduce the risk of injury in the event of an accidental deployment.
- Do not set a live air bag module down with the trim cover face down. This will reduce the risk of injury in the event of an accidental deployment.
- After deployment, the air bag surface can contain deposits of sodium hydroxide, a product of the gas generant combustion that is irritating to the skin. Wash your hands with soap and water afterwards.
- Never probe the connectors on the air bag module. Doing so can result in air bag deployment, which can result in personal injury.
- Restraint system diagnostic tools are for service only. Tools must be removed prior to operating the vehicle over the road. Failure to remove restraint system diagnostic tools could result in injury and possible violation of vehicle safety standards.
- To reduce the risk of personal injury, do not use any memory saver device.

NOTE:
- The air bag warning lamp illuminates when the RCM fuse is removed and the ignition switch is ON. This is normal operation and does not indicate a supplemental restraint system (SRS) fault.
- The SRS must be fully operational and free of faults before releasing the vehicle to the customer.

1. Turn all vehicle accessories OFF.
2. Turn the ignition switch to OFF.
3. At the central junction box (CJB), located below the RH side of the instrument panel, remove the trim panel, the cover, and the restraints control module (RCM) fuse F19 (10A) from the CJB.
4. Turn the ignition ON and visually monitor the air bag indicator for at least 30 seconds. The air bag indicator will remain lit continuously (no flashing) if the correct RCM fuse has been removed. If the air bag indicator does not remain lit continuously, remove the correct RCM fuse before proceeding.
5. Turn the ignition OFF.

6. WARNING: To avoid accidental deployment and possible personal injury, the backup power supply must be depleted before repairing or replacing any front or side air bag supplemental restraint system (SRS) components and before servicing, replacing, adjusting or striking components near the front or side air bag sensors, such as doors, instrument panel, console, door latches, strikers, seats and hood latches.

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).

Disconnect the battery ground cable and wait at least 1 minute.







7. Remove the 2 steering wheel back cover plugs (1 shown).







8. Remove the 2 driver air bag module bolts (1 shown).







9. Remove the driver air bag module.
1 Release the 2 retaining tabs. Disconnect the driver air bag module electrical connector.
- Label the driver air bag module squib number on the driver air bag module electrical connector before disconnecting.

2 Release the 2 retaining tabs. Disconnect the driver air bag module electrical connector.
- Label the driver air bag module squib number on the driver air bag module electrical connector before disconnecting.

3 Disconnect the 2 electrical connectors (1 shown).
4 Remove the driver air bag module.







10. Attach the restraint system diagnostic tools to the clockspring electrical connectors at the top of the steering column.







11. While pushing in on the 2 glove compartment door tabs, position the glove compartment downward.







12. Through the glove compartment opening, release the tabs and disconnect the LH passenger air bag module electrical connector.







13. Attach the restraint system diagnostic tool to the vehicle harness side of the LH passenger air bag module electrical connector.







14. Through the glove compartment opening, release the tabs and disconnect the RH passenger air bag module electrical connector.







15. Attach the restraint system diagnostic tool to the vehicle harness side of the RH passenger air bag module electrical connector.
16. Install the RCM fuse F19 (10A) to the CJB.
17. Connect the battery ground cable.

Reactivation
1. Remove the RCM fuse F19 (10A) from the CJB.
2. Disconnect the battery ground cable and wait at least 1 minute.







3. Remove the restraint system diagnostic tool from the vehicle harness side of the RH passenger air bag module electrical connector.







4. Through the glove compartment opening, connect the RH passenger air bag module electrical connector.







5. Remove the restraint system diagnostic tool from the vehicle harness side of the LH passenger air bag module electrical connector.







6. Through the glove compartment opening, connect the LH passenger air bag module electrical connector.
7. Close the glove compartment.







8. Remove the restraint system diagnostic tools from the clockspring electrical connectors at the top of the steering column.







9. CAUTION: The clockspring 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.

Install the driver air bag module.
1 Connect the 2 electrical connectors (1 shown).
2 Connect the driver air bag module electrical connectors as noted during removal.
3 Position the driver air bag module to the steering wheel.







10. Install the 2 driver air bag module bolts (1 shown).







11. Install the 2 steering wheel back cover plugs (1 shown).

12. WARNING: The restraint system diagnostic tool is for restraint system service only. Remove from vehicle prior to road use. Failure to remove could result in injury and possible violation of vehicle safety standards.

Make sure all restraint system diagnostic tool(s) that may have been installed during the repair have been removed from the vehicle and all SRS components are connected.

13. Turn the ignition switch from OFF to ON.
14. Install the RCM fuse F19 (10A) to the CJB and install the cover and trim panel.

15. WARNING: Be sure that nobody is in the vehicle and that there is nothing blocking or set in front of any air bag module when the battery ground cable is connected.

Connect the battery ground cable.

16. Prove out the supplemental restraint system (SRS) as follows:

Turn the ignition key from ON to OFF. Wait 10 seconds, then turn the key back to ON and visually monitor the air bag indicator with the air bag modules installed. The air bag indicator will light continuously for approximately 6 seconds and then turn off. If an air bag supplemental restraint system (SRS) fault is present, the air bag indicator will either:
- fail to light.
- remain lit continuously.
- flash.

The flashing might not occur 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 restraints control module (RCM) to complete the testing of the SRS. If the air bag indicator is inoperative and a SRS fault exists, a chime will sound in a pattern of 5 sets of 5 beeps. If this occurs, the air bag indicator and any SRS fault discovered must be diagnosed and repaired.

Clear all continuous DTCs from the restraints control module using a diagnostic tool.
pro multis · About Operation CHARM