Message Name:

BRIDGEWIRE B OPEN
(Service Message)

Message Code:

B3-008162

Associated CAS:

None

Single right engine bottle 1 bridgewire B failed open, wire open, or FIREX CTRL UNIT input monitoring circuit failed.

• Right Engine Discharge Cartridge (A112) of Fire Bottle 1
• Fire-Detection-and-Extinguishing Control Unit (FIREX CU) (A91)
• Junction Box 4 (JB4)
• Associated Wiring

Advisory Wire/Service Bulletin: None

Forum Articles/Infoservice/Newsletter: None

WARNING: OBEY THE LOCAL REGULATIONS WHEN YOU USE EXPLOSIVE DEVICES OR PUT THEM IN STORAGE. DISCARD THE DISCHARGE CARTRIDGES SAFELY AND CORRECTLY. THE DISCHARGE CARTRIDGES CAN FIRE ACCIDENTALLY. THIS CAN CAUSE INJURY TO PERSONS AND DAMAGE TO EQUIPMENT.

WARNING: MAKE SURE THAT THE ELECTRICAL CIRCUITS ARE NOT ENERGIZED WHEN YOU CONNECT THE ELECTRICAL CONNECTOR TO THE DISCHARGE CARTRIDGE. IF THE ELECTRICAL CIRCUITS ARE ENERGIZED, THE DISCHARGE CARTRIDGE CAN FIRE ACCIDENTALLY. THIS CAN CAUSE INJURY TO PERSONS OR DAMAGE TO THE EQUIPMENT.

1. Pull and reset FIREX Control Unit (A91) circuit breakers CB6-A4 and CB5-A3. Is the fault message still present?

   1. If YES, continue with next step.
   2. If NO, do close out.

2. Do wiring check between Right Engine Discharge Cartridge (A112) of Bottle 1 to FIREX Control Unit (A91), through JB4, for the following wires:

   From	To	Results
   Conn A112P1 - 3	Conn A91P2 - 27
   Conn A112P1 - 4	Ground

   1. If check is not satisfactory, repair wiring or replace JB4.
   2. If check is satisfactory, continue with next step.

3. Swap Right Engine Discharge Cartridge (A112) of Fire Bottle 1 with Left Engine Discharge Cartridge (A111) of Fire Bottle 1. Is the message fault still present?

   1. If YES, continue with next step.
   2. If NO, replace defective Discharge Cartridge.

4. Replace FIREX Control Unit (A91).
5. Do close out.