Ford Mustang (1999-2004) Service Manual: Air Bag Supplemental Restraint System (SRS) (Diagnosis and Testing)

Ford Mustang (1999-2004) Service Manual / Body / Supplemental Restraint System / Air Bag Supplemental Restraint System (SRS) (Diagnosis and Testing)

Refer to Wiring Diagrams Cell 46 , Air Bag for schematic and connector information.

Special Tool(s)

Diagnostic Tool, Restraint System 418-F088 (105-R0012)

Restraint System Diagnostic Tool Warning

WARNING: This 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.

Diagnosing Customer Concerns Without Hard DTCs

If a lamp fault code (LFC) is reported by the customer but is not present when the vehicle comes in for service, follow the Diagnostic Instructions procedure in this section to identify the intermittent DTC.

Once the DTC is known, read the Normal Operation section of the pinpoint test for the DTC involved.

  • Follow the deactivation procedure in this section.
  • Determine the location of components involved in creating that code.
  • Perform a thorough visual inspection of:
  • components.
  • connectors.
  • splices and wiring harnesses.
  • pinched wires.
  • worn insulation on conductors.

Refer to the Possible Causes section of the pinpoint test for the DTC involved, which lists the common concerns that relate to the DTC. Concerns are listed according to priority.

Diagnosing Customer Concerns with Hard DTCs

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.

Most air bag supplemental restraint system (SRS) diagnostic procedures will require the use of the deactivation and reactivation procedures in this section.

The deactivation and reactivation require the installation and removal of restraint system diagnostic tools. These procedures require removal of driver air bag module, and the disconnection of the passenger air bag module. This reduces the risk of deployment of air bag modules and safety belt pretensioners while diagnostics are being carried out.

Restraint system diagnostic tools are required to carry out diagnosis and testing of the supplemental restraint system (SRS). It is not acceptable to short-circuit the air bag module connections with a jumper wire. If a jumper wire is used to short-circuit the air bag module connections, a lamp fault code (LFC) will be displayed.

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.

The reactivation procedure requires the removal of any restraint system diagnostic tools installed and the reconnection of any air bag modules disconnected.

Air Bag Supplemental Restraint System (SRS) (Description and Operation)
The air bag supplemental restraint system (SRS) is designed to provide increased collision protection for front seat occupants in addition to that provided by the three-point safety belt system. Saf ...

Deactivation Procedure
WARNING: If the supplemental restraint system (SRS) is being serviced, the system must be deactivated and restraint system diagnostic tools must be installed. Refer to Air Bag Supplemental Restraint ...

Other materials:

Front Seat Cushion
Disassembly and Assembly All vehicles 1. Remove the seat track. For additional information, refer to Seat Track in this section. 2. Remove the seat backrest. For additional information, refer to Front Seat Backrest in this section. Vehicles with powe ...

Starter Drive and Flywheel Ring Gear Inspection
1. Remove the starter motor. For additional information, refer to Starter Motor-3.8L or Starter Motor-4.6L in this section. 2. Check the wear patterns on the starter drive gear and the flywheel ring gear . If the wear pattern is normal, install the sta ...

Front passenger sensing system
WARNING: Even with Advanced Restraints Systems, children 12 and under should be properly restrained in a rear seating position. Failure to follow this could seriously increase the risk of injury or death. WARNING: Sitting improperly out of position or with the ...