Ford Mustang (1999-2004) Service Manual: Weld Nut Repair - "J" Nut, Restraints Control Module (RCM)

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).

NOTE: There are two procedures to repair a vehicle having missing restraints control module attaching weld nut(s). Read both procedures before proceeding with the repair.

NOTE: If two or more weld nuts are missing, do not install the "J" nuts as outlined in this procedure.

Weld nuts must be installed as outlined in Weld Nut Repair - Missing Weld Nut, Restraints Control Module (RCM).

NOTE: The following procedure applies to vehicles that have a rectangular hole in the sheet metal that is in close proximity to the missing weld nut.

1. Obtain a "J" nut (part number N623332-S301) or any of the following optional "J" nuts (part numbers: N623342-S101, N800854-S100, N800925-S100).

2. Obtain a 6 mm (0.24 in) grounding screw (part number N806327-S190) or equivalent.

3. Install the "J" nut through the rectangular hole in the sheet metal.

4. NOTE: Be sure the threaded portion of the "J" nut is aligned with the clearance hole in the sheet metal.

Install the crash sensor.

5. Tighten the attaching screws to specification. For additional information, refer to Torque Specifications in this section.