Check Control Message "Restraint System Faulty" Is Displayed. Intermittently the check control message "Front Passenger Restraint System Faulty" is displayed in the Central Information Display. The following information is read from the vehicle: 1. Key Reader Vehicle Defects Details shows DTC: 930AB3. 2. ISTA fault code "930AB3-POL: indicator lamp for passenger airbag deactivation: short-circuit to plus" The fault condition is not present. 3. ISTA check control message ID 109 CAUSE FZD (Operating Unit for Roof) software error causes the POL (Passenger Airbag Off Lamp) to intermittently malfunction.