F 250 4WD Super Duty V10-6.8L VIN Z CNG (2003)
Air Bag(s) Arming and Disarming: Service and Repair
Air Bag Disarming and Arming
Depowering and Repowering
Supplemental Restraint System ( SRS ) Depowering and Repowering
Depowering Procedure
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.
Warning: Never probe the connectors on the air bag module. Doing so can result in air bag deployment, which can result in personal injury.
Warning: To reduce the risk of personal injury, do not use any memory saver devices.
Note: If a seat equipped with a supplemental restraint system (SRS) component is being serviced, the SRS must be depowered.
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.
Note: 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 LH side of the instrument panel, remove the cover and the restraints control module (RCM)
fuse F2.26 (10A) from the CJB. For additional information, refer to the Wiring Diagram Manual.
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.
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 one minute. Be sure to disconnect auxiliary
batteries and power supplies (if equipped).
6. Disconnect the battery ground cable (14301) and wait at least one minute.
Repowering Procedure
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.
1. 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.
2. Turn the ignition switch from OFF to ON.
3. Install the RCM fuse F2.26 (10A) to the CJB and install the cover.
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.
4. Connect the battery ground cable.
5. 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
six seconds and then turn off. If an air bag supplemental restraint system (SRS) fault is present, the air bag indicator will:
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fail to light.
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remain lit continuously.
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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 five sets of five beeps. If this occurs, the air bag indicator and any SRS fault discovered must be
