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Theory Of Operation

WARNING: This page is about a different car, the 2015 Fiat 500. However, it is still accessible from the selected car via links, so may be relevant.

When powered, the Occupant Restraint Controller (ORC) sends a test current to the squibs to verify the integrity of the squib and wiring. These circuits are maintained in a "floating" configuration at the ORC (connected to neither power nor ground) as protection against inadvertent deployment. Use of the Supplemental Restraints System (special tool #8443A, SRS Load Tool) in the tests below substitutes a suspect squib with a known good component. The use of the ORC Adapter (special tool #8443-25, 56 Way ACM Adapter) provides a test point as well as a method for opening the shorting bar connections within the ORC harness connector.

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