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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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10/01/19

Message Overview:

Fault Message:

L OIL FIRE DETECT WRG/PROBE XCK MA

Fault Code:

7327426LBR

Associated CAS:

L FADEC FAULT
(Advisory)

Reporting LRU: Left Engine Electronic Controller (EEC)
System Description: 77-20-00
Schematic Diagram: 77-20-00 [ Global Express ]  [ G5000 ]  [ Global XRS ]
Wiring Diagram: 71-50-01 [ Global Express ]  [ G5000 ]  [ Global XRS ]

Fault Description:

Unsatisfactory difference between the signals from channel A and channel B of the Oil Fire Detection Thermocouple.

Possible Causes:

  • Oil Fire Detection Thermocouple
  • Left Engine Electronic Controller (EEC)

Troubleshooting Tips:

Advisory Wire/Service Bulletin: None

Forum Articles/Infoservice/Newsletter: None

Quick Links:

Engine Safety Precautions AMM 71-00-00-910-801 [ Global Express ]  [ G5000 ]  [ Global XRS ]
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 ]
Removal of the Bypass-Duct Access Panels
(451AL/461AL, 451BL/461BL, 451CL/461CL,
451DL/461DL, 451EL/461EL, 452FR/462FR,
452GR/462GR, 452HR/462HR, 452JR/462JR,
452KR/462KR)		 AMM 72-71-01-000-801 [ Global Express ]  [ G5000 ]  [ Global XRS ]
Installation of the Bypass-Duct Access Panels
(451AL/461AL, 451BL/461BL, 451CL/461CL,
451DL/461DL, 451EL/461EL, 452FR/462FR,
452GR/462GR, 452HR/462HR, 452JR/462JR,
452KR/462KR)		 AMM 72-71-01-400-801 [ Global Express ]  [ G5000 ]  [ Global XRS ]
Deactivation of the Thrust Reverser (for Maintenance) AMM 78-30-00-040-801 [ Global Express ]  [ G5000 ]  [ Global XRS ]
Activation of the Thrust Reverser (for Maintenance) AMM 78-30-00-440-801 [ Global Express ]  [ G5000 ]  [ Global XRS ]
Removal of the Combustion Section Fairings EMM 73-03-02-000-801 [ Global Express ]  [ G5000 ]  [ Global XRS ]
Installation of the Combustion Section Fairings EMM 73-03-02-400-801 [ Global Express ]  [ G5000 ]  [ Global XRS ]
Removal of the Engine Electronic Controller (EEC) EMM 73-21-01-000-801 [ Global Express ]  [ G5000 ]  [ Global XRS ]
Installation of the Engine Electronic Controller (EEC) EMM 73-21-01-400-801 [ Global Express ]  [ G5000 ]  [ Global XRS ]
Removal of the Oil Fire Detection Thermocouple EMM 77-22-01-000-801 [ Global Express ]  [ G5000 ]  [ Global XRS ]
Installation of the Oil Fire Detection Thermocouple EMM 77-22-01-400-801 [ 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. Open the circuit breakers that follow:

    SYSTEM NAME CIRCUIT BREAKER NAME BUS NAME
    ENGINE L FADEC CH A BATT
    ENGINE L FADEC CH B BATT
    ENGINE L ENG IGN 1 BATT
    ENGINE L ENG IGN 2 BATT
    ENGINE L ENG FUEL HPSOV BATT
    ENGINE L ENG START A BATT
    ENGINE L ENG START B BATT
    ENGINE L T/R CTL VALVE BATT
    ENGINE L T/R LOWER LOCK BATT
    ENGINE L T/R UPPER LOCK BATT

  2. Perform a deactivation of the thrust reverser.
  3. Open the cowls.
  4. Remove the applicable bypass-duct access panel and the applicable combustion section fairing.
  5. Check if the maintenance alert message is stored.

    1. If the maintenance alert message is stored, the fault could be intermittent.
    2. If the maintenance alert message is not stored, continue with next step.

  6. Examine the interface wiring for damage between the connectors and the terminal blocks that follow:
    For Channel A:

    • The EEC connector P1044
    • The bypass duct connectors J1030 and P1030
    • The terminal blocks TB2110 and TB2125, and the ground connector GC2101

    For Channel B:

    • The EEC connector P1047
    • The bypass duct connectors J1032 and P1032
    • The terminal blocks TB2210 and TB2225, and the ground connector GC2201
      NOTE: Look specially for signs of damage adjacent to clip locations.

    1. If there is damage, repair or replace defective wiring as required and go to step 9.
    2. If there is no damage, continue with next step.

  7. Clean the terminal blocks TB2110, TB2125, TB2210 and TB2225, and the ground connectors GC2101 and GC2201 and the Alumel and Chromel terminal lugs. Check if the fault message is still active?

    1. If the fault message is not active, go to step 9.
    2. If the fault message is active, continue with next step.

  8. Replace oil-fire detection thermocouple.
  9. Close the cowls.
  10. Perform a activation of the thrust reverser.
  11. Do close out.

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