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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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Quick Links

12/03/25

Message Overview:

CHECK DU 1
(Caution)

DDG Reference: 31-61-01
Pilot Action (QRH): GO / NO GO-4
System Description: 31-40-00 - Engine Indication and Crew Alerting System (EICAS)
Schematic Diagram: [ G5000 ]  [ Global Express ]  [ Global XRS ] SSM 31-61-00-101 - Electronic Flight Instrument System (EFIS) - Electrical Schematic
Wiring Diagram: [ G5000 ]  [ Global Express ]  [ Global XRS ] WM 31-61-00-1_001 - Sheet 1 - Display Units No. 1 and No. 2 - ALL
[ G5000 ]  [ Global Express ]  [ Global XRS ] WM 31-61-01-1_001 - Sheet 1 - Display No. 1 and No. 2 - ALL

Message Description:

The Electronic Flight Display Unit (EFDU) shows data that does not agree with the initial sensor data.

NOTE: This message is applicable to all EFDUs with faults (one of which can be a Primary Flight Display (PFD)). If two PFDs (usually EFDUs 1 and 6) have faults at the same time, the Engine Indicating and Crew Alerting System (EICAS) display shows CHECK PFD.

Possible Causes:

  • Display Unit 1 (DU) (M7)
  • Integrated Avionics Computer 1 (IAC) (A11)
  • Integrated Avionics Computer 2 (IAC) (A10)
  • Integrated Avionics Computer 3 (IAC) (A12)
  • Associated Wiring

Troubleshooting Tips:

Advisory Wire/Service Bulletin:

Full Throttle Blog/Forum Articles/Infoservice/Newsletter: None

Flight Operation Notifications Manual (FONM): None

NOTES:

Quick Links:

Grounding of the Aircraft [ G5000 ]  [ Global Express ]  [ Global XRS ] AMM10-11-00-867-801
Removal of the Covers and Plugs [ G5000 ]  [ Global Express ]  [ Global XRS ] AMM10-12-00-020-801
Installation of the Covers and Plugs [ G5000 ]  [ Global Express ]  [ Global XRS ] AMM10-12-00-420-801
Standard Aircraft Configuration for Maintenance [ G5000 ]  [ Global Express ]  [ Global XRS ] AMM12-00-00-867-801
Aircraft Walkaround (for Maintenance) [ G5000 ]  [ Global Express ]  [ Global XRS ] AMM12-00-00-867-802
Connect Electrical Power to the Aircraft [ G5000 ]  [ Global Express ]  [ Global XRS ] AMM24-00-00-861-801
Remove the Electrical Power from the Aircraft [ G5000 ]  [ Global Express ]  [ Global XRS ] AMM24-00-00-861-802
Electrical/Electronic Safety Precautions [ G5000 ]  [ Global Express ]  [ Global XRS ] AMM24-00-00-910-801
Electrostatic Discharge Safety Precautions [ G5000 ]  [ Global Express ]  [ Global XRS ] AMM24-00-00-910-802
Operational Test of the Integrated Avionics Computer (IAC) System [ G5000 ]  [ Global Express ]  [ Global XRS ] AMM31-41-00-710-801
Removal of the Integrated Avionics Computers (IAC) [ G5000 ]  [ Global Express ]  [ Global XRS ] AMM31-41-01-000-801
Installation of the Integrated Avionics Computers (IAC) [ G5000 ]  [ Global Express ]  [ Global XRS ] AMM31-41-01-400-801
Removal of the Electronic Flight-Display Units [ G5000 ]  [ Global Express ]  [ Global XRS ] AMM31-61-01-000-801
Installation of the Electronic Flight-Display Units [ G5000 ]  [ Global Express ]  [ Global XRS ] AMM31-61-01-400-801
Operational Test of the Electronic Flight-Display Units [ G5000 ]  [ Global Express ]  [ Global XRS ] AMM31-61-01-710-801
Access to Active Faults [ G5000 ]  [ Global Express ]  [ Global XRS ] AMM45-45-00-970-802
Access to Stored Faults [ G5000 ]  [ Global Express ]  [ Global XRS ] AMM45-45-00-970-803
Access to System Diagnostics [ G5000 ]  [ Global Express ]  [ Global XRS ] AMM45-45-00-970-804
Flight Deck Effect to Fault Correlations [ G5000 ]  [ Global Express ]  [ Global XRS ] AMM45-45-00-970-821
Integrated Maintenance Test (IMT) Fault Code Look-Up [ G5000 ]  [ Global Express ]  [ Global XRS ] AMM45-45-00-970-826
Safety Precautions - Maintenance Practices - ALL [ G5000 ]  [ Global Express ]  [ Global XRS ] SPM20-00-01-02
Electrical Wiring - Continuity Test - Adjustment /Test - ALL [ G5000 ]  [ Global Express ]  [ Global XRS ] SPM20-12-01-05
Wire Repair - Maintenance Practices - ALL [ G5000 ]  [ Global Express ]  [ Global XRS ] SPM20-12-10-02

Troubleshooting Recommendations:

  1. Select related CAIMS message below:
  2. Do close out.

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