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(WARNING)
RED MESSAGE (CAUTION)
AMBER MESSAGE (ADVISORY)
CYAN MESSAGE (STATUS)
WHITE MESSAGE Require immediate crew attention. These messages are accompanied by flashing master warning, triple chime attenson with or without voice message or dedicated tone. Require immediate crew awareness and future crew action may be required in the form of alternate system selection or performance limitation. These message are accompanied by flashing master caution and a single chime. Indicate safe or normal system operation which require crew awareness, over and above the dark cockpit philosophy. Indicate minor failures or reduction in systems capability, which require no crew action.

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07/29/19

Message Overview:

Fault Message:

FMQGC-B INVALID

Fault Code:

3143087DAU

Associated CAS:

None

Reporting LRU: Data Acquisition Unit (DAU) 2
System Description: 31-40-00
Schematic Diagram: 31-42-00 [ Global Express ]  [ G5000 ]  [ Global XRS ]
Wiring Diagram: 31-42-02 [ Global Express ]  [ G5000 ]  [ Global XRS ]

Fault Description:

The Data Acquisition System reports that the Line Replaceable Unit (LRU) label 270 is transmitted from the Fuel Management and Quantity Gauging Computer (FMQGC) with incorrect Source Destination Identifier (SDI) or invalid Sign Status Matrix (SSM).

Possible Causes:

  • Fuel Management and Quantity Gauging Computer (FMQGC) (A47)
  • Data Acquisition Unit (DAU) 2 (A18)
  • Associated Wiring

Troubleshooting Tips:

Advisory Wire/Service Bulletin: None

Forum Articles/Infoservice/Newsletter: None

Quick Links:

Electrical/Electronic Safety Precautions AMM 24-00-00-910-801 [ Global Express ]  [ G5000 ]  [ Global XRS ]
Electrostatic Discharge Safety Precautions AMM 24-00-00-910-802 [ Global Express ]  [ G5000 ]  [ Global XRS ]
Removal of the Computer AMM 28-41-01-000-801 [ Global Express ]  [ G5000 ]  [ Global XRS ]
Installation of the Computer AMM 28-41-01-400-801 [ Global Express ]  [ G5000 ]  [ Global XRS ]
Removal of the Data Acquisition Units (DAU) AMM 31-42-01-000-801 [ Global Express ]  [ G5000 ]  [ Global XRS ]
Installation of the Data Acquisition Units (DAU) AMM 31-42-01-400-801 [ Global Express ]  [ G5000 ]  [ Global XRS ]
Access to Active Faults AMM 45-45-00-970-802 [ Global Express ]  [ G5000 ]  [ Global XRS ]
Safety Precautions - Maintenance Practices - ALL SPM 20-00-01-02 [ Global Express ]  [ G5000 ]  [ Global XRS ]
Wire Repair - Maintenance Practices - ALL SPM 20-12-10-02 [ Global Express ]  [ G5000 ]  [ Global XRS ]

Troubleshooting Recommendations:

  1. Remove DAU 1 to get access to the connector A18CP1 and disconnect the connector A47EP1 from Fuel Management and Quantity Gauging Computer. Perform a continuity check as follows:

    From To Result
    A18CP1-A9 A47EP1-E1
    A18CP1-A10 A47EP1-E2
    A18CP1-SH A47EP1-SH

    1. If there is no continuity, repair or replace defective wiring as required and do close out.
    2. If there is continuity, continue with next step.

  2. Perform a continuity check as follows:

    From To Result
    A18CP1-A9 Ground
    A18CP1-A10 Ground
    A18CP1-SH Ground

    1. If there is continuity, repair or replace defective wiring as required and do close out.
    2. If there is no continuity, continue with next step.

  3. Swap DAU 2 with DAU 4. Is the fault still present?

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

  4. Replace FMQGC.
  5. Do close out.

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