05/15/25
Message Overview:
Message Name:
EMS CDU 2 FAILED (LEVEL C)
Message Code:
2470211CDU
| Reporting LRU: | Electrical Management System Control-and-Display Unit 2 (EMS CDU) |
| Associated CAS: | ELEC SYS FAULT (Advisory) |
| System Description: | 24-70-00 - Electrical Management System |
| Schematic Diagram: | [ G5000 ] [ Global Express ] [ Global XRS ] SSM 24-70-00-101 - Electrical Management System (EMS) - Electrical Schematic |
| Wiring Diagram: | [ G5000 ] [ Global Express ] [ Global XRS ] WM 24-70-00-1_002 - Sheet 2 - EMS CDU No. 2 - ALL [ G5000 ] [ Global Express ] [ Global XRS ] WM 24-70-02-1_001 - Sheet 1 - CDU No. 2 - ALL |
Message Description:
Electrical Management System Control-and-Display Unit 2 (EMS CDU) has detected an internal failure related to the Processor, Memory, ARINC 429 Card or internal fuses.
Possible Causes:
- Electrical Management System Control-and-Display Unit 2 (EMS CDU) (A91)
Troubleshooting Tips:
Advisory Wire/Service Bulletin: None
Full Throttle Blog/Forum Articles/Infoservice/Newsletter: None
Flight Operation Notifications Manual (FONM): None
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 |
| Removal of the Electrical Management System Control-and-Display Units (EMS CDU) | [ G5000 ] [ Global Express ] [ Global XRS ] AMM24-70-01-000-801 |
| Installation of the Electrical Management System Control-and-Display Units (EMS CDU) | [ G5000 ] [ Global Express ] [ Global XRS ] AMM24-70-01-400-801 |
| Operational Test of the Electrical Management System Control-and-Display Units (EMS CDU) | [ G5000 ] [ Global Express ] [ Global XRS ] AMM24-70-01-710-801 |
| 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 |
| Wire Repair - Maintenance Practices - ALL | [ G5000 ] [ Global Express ] [ Global XRS ] SPM20-12-10-02 |
Troubleshooting Recommendations:
NOTE: For possible future reference, perform a download of the EMS CDU NVM. This step must be done before performing a 'Virgin Start' and clearing the NVM.
- Download EMS CDU 1 and 2 NVM (for future reference).
- Clear the EMS CDUs NVM.
- Perform a Virgin Start Procedure On EMS CDU 2.
- If system checks are good, go to step 6.
- If fault remains, continue with next step
- Interchange EMS CDUs and monitor.
- If system checks are good, replace EMS CDU 2 and do close out.
- If fault remains, continue with next step.
- Download EMS CDU 1 and 2 NVM (for future reference).
- Do close out.