Section 01-20B: Restraints, Passive—Supplemental Air Bag System
1993 Mustang Workshop Manual
DIAGNOSIS AND TESTING

Diagnosing Customer Concerns With Hard Diagnostic Trouble Codes

Most air bag system diagnostic procedures will require the use of the System Deactivation and System Reactivation Procedures outlined in this Section. These procedures allow the removal of the air bags from the vehicle thereby removing the risk of air bag deployment while diagnostics are performed.

Rotunda Air Bag Simulator 105-00010 or equivalent is required to perform diagnosis and testing of the air bag system. The air bag simulator is a 2 ohm resistor used to simulate an air bag connection to the system. It is not acceptable to jump out the air bag connection with a zero ohm jumper wire. If a zero ohm jumper wire is used to jumper out the air bag connection, a system fault will be displayed (Diagnostic Trouble Code 34 or 35) according to the priority scheme.

NOTE: The air bag simulator 105-00010 for 1993 vehicles have a different connector than previous simulators. The new simulator will only mate with 1993 vehicles and beyond. Likewise, the old simulator 105-00008 will only mate with 1992 and previous model year vehicles.





 

Deactivation Procedure

  1. Disconnect positive battery cable.
  1. Wait one minute. This is the time required for backup power supply in diagnostic monitor to deplete its stored energy.
  1. Remove four nut and washer assemblies retaining driver air bag module to steering wheel. Disconnect driver air bag connector. Connect Rotunda Air Bag Simulator 105-00010 or equivalent to vehicle harness at top of steering wheel.



  1. Connect positive battery cable.
 

Reactivation Procedure

 WARNING: THE AIR BAG SIMULATOR MUST BE REMOVED AND THE AIR BAG RECONNECTED WHEN THE SYSTEM IS REACTIVATED.

  1. Disconnect positive battery cable.
  1. Wait one minute for backup power supply to deplete stored energy.
  1. Remove Rotunda air bag simulator 105-00010 or equivalent from vehicle harness connector at top of steering column.
  1. Reconnect driver air bag connector.
  1. Position driver air bag on steering wheel and secure with four nut and washer assemblies (10 mm). Tighten nut and washer assemblies to 2.7-3.7 Nm (24-32 lb-in).
  1. Connect positive battery cable.
  1. Prove out system.