DTC B2777, B2778, B2779, B2780: Passenger-side curtain air bag module circuit malfunction: Notes

WARNING: This page is about a different car, the 2005 Mazda RX-8. However, it is still accessible from the selected car via links, so may be relevant.

Fig 1: DTC B2777, B2778, B2779, B2780 Detection Condition & Possible Causes

Courtesy of MAZDA MOTORS CORP.