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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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08/29/19

Message Overview:

Fault Message:

LDG GR DRS CLOSE SW INPUTS DISAGREE

Fault Code:

3230278EL

Associated CAS:

None

Reporting LRU: Landing Gear Electronic Control Unit (LGECU)
System Description: 32-31-00
Schematic Diagram: None
Wiring Diagram: None

Fault Description:

Disagree fault usually caused by mechanical or wiring failure. Landing Gear Electronic Control Unit (LG ECU) supplies low current to LDG GR Doors-Close Switch. Switch position sets condition of GND/open input to LGECU. (Input Z must be 100 KOhms for open-circuit) failure.

Possible Causes:

  • Landing Gear Electronic Control Unit (LGECU) (A52)
  • Landing Gear Door Close Switch

Troubleshooting Tips:

Advisory Wire/Service Bulletin: None

Forum Articles/Infoservice/Newsletter: None

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Troubleshooting Recommendations:

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