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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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04/09/21

Message Overview:

Message Name:

FIRE SHUTOFF COMMAND 4

Message Code:

B3-302962

Associated CAS Message:

L ENGINE MINOR FAULT
(Advisory)

Reporting LRU: ENG CNTL PNL
System Description: 26-11-00
Schematic Diagram: None
Wiring Diagram: None

Message Description:

Left engine fire shutoff command fault 4.

[MCID 1308]
Fire Shutoff Command 4.
A fault with the cockpit engine FIRE command was sensed.

Possible Causes:

  • Aircraft Harness to the Aft Pylon
  • Aircraft Wiring from the Engine Panel to the ECU B
  • Aircraft Harness from the Pylon to the ECU B
  • Fire Shutoff Switch
  • Full Authority Digital Engine Control Unit (FADEC) Electronic Control Unit A (ECU) (A41)
  • Full Authority Digital Engine Control Unit (FADEC) Electronic Control Unit B (ECU) (A43)

Troubleshooting Tips:

Advisory Wire/Service Bulletin: None

Forum Articles/Infoservice/Newsletter: None

Quick Links:

General Visual Inspection of the Engine Wiring Harness AMM 71-50-00-210-802
Removal of the FADEC Electrical Harness from the Left Engine AMM 71-50-05-000-802
Installation of the FADEC Electrical Harness on the Left Engine AMM 71-50-05-400-802
Removal of the Zone 2 Fire Detect Electrical Harness from the Left Engine AMM 71-50-19-000-801
Installation of the Zone 2 Fire Detect Electrical Harness on the Left Engine AMM 71-50-19-400-801
Removal of the Pylon Fire Detect Electrical Harness from the Left Engine AMM 71-50-23-000-801
Installation of the Pylon Fire Detect Electrical Harness on the Left Engine AMM 71-50-23-400-801
Removal of the Engine Electronic Control Unit (ECU) AMM 76-10-05-000-801
Installation of the Engine Electronic Control Unit (ECU) AMM 76-10-05-400-801
Wiring - Maintenance Practices - ALL SPM 20-12-00-02
Wire Repair - Maintenance Practices - ALL SPM 20-12-10-02
Electrical Connectors - Maintenance Practice - ALL SPM 20-20-00-02

Troubleshooting Recommendations:

  1. MCID 1308 fault present, troubleshoot using the following steps for aircraft and engine fault isolation with reference to the Light Engine Maintenance Manual TASK 72-00-00-810-801 (Subtask 72-00-00-810-224-A01).

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