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Home >> Fiat >> 2019 >> 500 Lounge, Automatic Trans >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 60 (Occupant Restraint Controller (Orc) - DTCS B0118-95 To U0127-00 - 500 - Electric) >> DTC Troubleshooting >> B0124-1B Front Passenger Anchor PRETENSIONER-Circuit Resistance Above Threshold >> Theory Of Operation

Theory Of Operation

WARNING: This page is about a different variant/trim than selected.

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 provides a test point as well as a method for opening the shorting bar connections within the ORC harness connector.

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