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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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08/26/19

Message Overview:

Fault Message:

LGECUA/WRG/BCU(GR HDL UP-NOT USED)2

Fault Code:

3230162EL

Associated CAS:

None

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

Fault Description:

Fault is usually caused by internal failure. But, external causes (incorrect load-voltage/polarity) are:

  • Damaged/defective wiring to load
  • Damaged/defective load

Driver gives path to GND when ON, open connection when OFF. Built-In Test (BIT) finds too-much curre.

Possible Causes:

  • Landing Gear Electronic Control Unit (LG ECU) (A52)
  • Brake Control Unit (BCU) (A71)

Troubleshooting Tips:

Advisory Wire/Service Bulletin: None

Forum Articles/Infoservice/Newsletter: None

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Troubleshooting Recommendations:

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