Ford Mustang (1999-2004) Service Manual: Reactivation Procedure

1. WARNING: The restraint system diagnostic tool must be removed and the air bag modules reconnected when the system is reactivated to avoid non-deployment in a collision, resulting in possible personal injury.

Remove from vehicle prior to road use. Failure to remove could result in injury and possible violation of vehicle safety standards.

Disconnect the battery ground cable. Refer to Section.

2. Wait at least one minute for the backup power supply in the restraints control module (RCM) to deplete its stored energy.

3. Remove the restraint system diagnostic tool from the vehicle harness connector at the top of the steering column.

4. WARNING: 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.

Install the driver air bag module. Refer to Driver Air Bag Module in this section.

5. 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.

Remove the restraint system diagnostic tool from the vehicle harness connector at the passenger air bag module.

6. Connect the passenger air bag module electrical connector.

7. Reconnect the battery ground cable. For additional information, refer to Section.

8. Prove out the system.

Prove Out Procedure

Turn the ignition switch from the OFF to the RUN position and visually monitor the air bag indicator with the air bag modules or restraint system diagnostic tools installed. The air bag indicator will light continuously for approximately six 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 RUN 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 an SRS fault exists, a chime will sound in a pattern of five sets of five beeps. If this occurs, the air bag indicator will need to be repaired before diagnosis can continue.

Glossary

Restraint System Diagnostic Tool

Restraint system diagnostic tools are used to simulate air bag module connections to the system.

Disconnect the Component

Disconnect the component means disconnect the component vehicle harness connector. It does not mean remove the component. Do not reconnect a disconnected component unless instructed to do so.

Deactivate the System

Deactivate the system means to perform the deactivation procedure. Refer to Deactivation Procedure in this section.

Prove Out the System

Prove out the system means to turn the ignition switch from the OFF to the RUN position and visually monitor the air bag indicator with the air bag modules installed. Refer to Prove Out Procedure in this section.

Reactivate the System

Reactivate the system means to perform the reactivation procedure. Refer to Reactivation Procedure in this section.

Reconnect the System

Reconnect the system means to reconnect all system components. Refer to Air Bag System Reconnect Checklist in this section.

Install a New Component

Install a new component means to remove the existing component and install a new authorized part obtained from Ford Customer Service Division.

Verify the System

Verify the system means to prove out the system with restraint system diagnostic tools for the air bag modules in place of components.

Air Bag System Reconnect Checklist

The checklist below should be completed following diagnosis or repair of any air bag system concern.

1. Is the connector at the base of the steering column connected?

2. Are the air bag modules connected?

3. Is the restraints control module (RCM) connected?

4. Is the vehicle battery connected?