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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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09/23/19

Message Overview:

Fault Message:

L FMU CH B WRG/FMU[FMV TM] RNG

Fault Code:

7326315LBR

Associated CAS:

L FADEC FAIL
(Caution)

Reporting LRU: Engine Electronic Controller (EEC) 1
System Description: 73-20-00
Schematic Diagram: None
Wiring Diagram: 71-50-01 [ Global Express ]  [ G5000 ]  [ Global XRS ]

Fault Description:

There is an error of resistance in the Fuel Metering Valve Torque Motor of the Fuel Metering Unit (FMU) for channel B.
OR
There is an open or short circuit in the interface wiring.

NOTE: The FMU circuits are continuously monitored by the Full-Authority Digital Engine-Controller (FADEC).

Possible Causes:

  • Fuel Metering Unit (FMU)
  • Left Engine Electronic Controller (EEC)
  • Associated Wiring

Troubleshooting Tips:

Advisory Wire/Service Bulletin: None

Forum Articles/Infoservice/Newsletter: None

Quick Links:

Opening of the Cowls AMM 71-10-00-010-801 [ Global Express ]  [ G5000 ]  [ Global XRS ]
Closing of the Cowls AMM 71-10-00-410-801 [ Global Express ]  [ G5000 ]  [ Global XRS ]
Connection of Electrical Connectors EMM 70-50-01-910-801 [ Global Express ]  [ G5000 ]  [ Global XRS ]
Removal of the Eng Electronic Controller (EEC) Mod 73-101559 EMM 73-21-01-000-801-B00 [ Global Express ]  [ G5000 ]  [ Global XRS ]
Installation of the Eng Electronic Controller (EEC) Mod 73-101559 EMM 73-21-01-400-801-B001 [ Global Express ]  [ G5000 ]  [ Global XRS ]
Removal of the Fuel Metering Unit EMM 73-21-03-000-801 [ Global Express ]  [ G5000 ]  [ Global XRS ]
Installation of the Fuel Metering Unit EMM 73-21-03-400-801 [ Global Express ]  [ G5000 ]  [ Global XRS ]
Wire Repair - Maintenance Practices - ALL SPM 20-12-10-02 [ Global Express ]  [ G5000 ]  [ Global XRS ]

Troubleshooting Recommendations:

  1. Perform a visual inspection of the interface wiring for damage between the EEC connector (P1047) and the FMU connector (P1050).

    1. If system checks are good, do close out.
    2. If fault remains, continue with next step.

  2. Perform wiring checks between the EEC and the FMU.

    1. If wiring checks are not good, repair defective wiring as required and do close out.
    2. If wiring checks are good, continue with next step.

  3. Perform a resistance check of the FMU as follows:

    From To Resistance Value Result
    P1050-1 P1050-2 30 to 45 ohms at 50°F (10°C) ±0.80 ohms per 9°F (5°C)
    P1050-1 Ground more than 40 megohm

    1. If the resistance is not within range, repair defective wiring as required and do close out.
    2. If the resistance is within range, continue with next step.

  4. Replace FMU.
  5. Do close out.

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