Some modern vehicles may display a "Service Airbag" or "Seat Belt Fault" message on the driver information center [2].
The most frequent culprit is a poor electrical connection. A common issue involves the yellow connectors located under the passenger seat or behind the B-pillar trim [16, 18].
Because SRS systems contain explosive components, specialized diagnostic tools are required to test the circuit safely without accidental deployment [2, 6].