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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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09/27/19

Message Overview:

Fault Message:

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

Fault Code:

7326617LBR

Associated CAS:

None

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

Fault Description:

The Engine Electronic Controller (EEC) senses that the signal from the Linear Variable Differential Transformer for channel A is out of range. The Fuel Metering Unit (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:

CAUTION: Do not do electrical checks into the Engine Electronic Controller (EEC). If you do not obey this instruction, damage to the EEC can occur.

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

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

  2. Perform wiring checks between the EEC 1 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
    P1050-3 P1050-4 73 - 107 ohms at 50 °F (10 °C) ±1.75 ohms per 9 °F (5 °C)
    P1050-8 P1050-7 130 - 190 ohms at 50 °F (10 °C) ±3 ohms per 9 °F (5 °C)
    P1050-5 P1050-6 130 - 190 ohms at 50 °F (10 °C) ±3 ohms per 9 °F (5 °C)
    P1050-3 Ground >40 megohm
    P1050-8 Ground >40 megohm
    P1050-5 Ground >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. Swap Left EEC with Right EEC. Is the fault still present?

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

  5. Replace FMU.
  6. Do close out.

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