Airbag fault

2015 fiat ducato, airbag in steering wheel and dash in front of passenger. No airbags in seats. Where would i check for a loose wire causing airbag warning light on instrument cluster. I would like to check the wiring before replacing/repairing the airbag ECU.

The swivels underneath can cause damage, check your wiring under the swivel seat.

The yellow plastic plugs under the seats can cause problems. As Paul says, the swivel seats can snag the wiring. Also check the seat belt anchor points for loose/damaged wiring.