With Hard Diagnostic Trouble Codes (DTC)/Lamp Fault Codes (LFC)

Most air bag Supplemental Restraint System (SRS) diagnostic procedures will require the use of the deactivation and reactivation procedures.

The deactivation procedure requires installation of air bag simulators on the vehicle harness. One simulator is required for each air bag and for each safety belt retractor pretensioner. Connecting simulators at the air bag and pretensioner connectors allows diagnostic tests to be done without the risk of air bag deployment or pretensioner activation.

The simulator for the driver air bag is installed on the air bag sliding contact connector to the driver air bag. The passenger air bag connector, the two side air bag connectors and the two pretensioner connectors must be accessed to attach simulators to the vehicle harness.

Air bag simulators are required to carry out diagnosis and testing of the SRS. The simulator is a 2-ohm resistor used to simulate air bag module connections to the system. It is not acceptable to short-circuit the air bag module connections with a zero-ohm jumper wire. If a zero-ohm jumper wire is used to short-circuit the air bag module connections, a Lamp Fault Code (LFC) will be displayed.

The reactivation procedure requires the removal of any simulators installed and the reinstallation of any airbag modules removed or disconnected.