background
x
loader
Troubleshooting
arrow By ATA By Message Color By Observed Faults By CAIMS By Tips

Select color for CAS message that you wish to troubleshoot

(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.

This page includes :

For AOG assistance contact:

CRC Montreal (YUL)
Quick Links

10/09/19

Message Overview:

Fault Message:

L MAINTENANCE TEST ENABLE SWITCH MA

Fault Code:

7327226LBR

Associated CAS:

None

Reporting LRU: Left Engine Electronic Controller (EEC)
System Description: 78-30-00
Schematic Diagram: 78-33-00 [ Global Express ]  [ G5000 ]  [ Global XRS ]
Wiring Diagram: 71-50-01 [ Global Express ]  [ G5000 ]  [ Global XRS ]
76-10-01 [ Global Express ]  [ G5000 ]  [ Global XRS ]

Fault Description:

The fault message is set when there is an open/short circuit in the Maintenance Test-Enable Switch (MTES) or the interface wiring.

Possible Causes:

  • Maintenance Test-Enable Switch (MTES)
  • Left Engine Electronic Controller (EEC)
  • Associated Wiring

Troubleshooting Tips:

Advisory Wire/Service Bulletin: None

Forum Articles/Infoservice/Newsletter: None

Quick Links:

Opening of the Cowls AMM 71-10-00-010-801 [ Global Express ]  [ G5000 ]  [ Global XRS ]
Closing of the Cowls AMM 71-10-00-410-801 [ Global Express ]  [ G5000 ]  [ Global XRS ]
Deactivation of the Thrust Reverser (for Maintenance) AMM 78-30-00-040-801 [ Global Express ]  [ G5000 ]  [ Global XRS ]
Activation of the Thrust Reverser (for Maintenance) AMM 78-30-00-440-801 [ Global Express ]  [ G5000 ]  [ Global XRS ]
Removal of the Eng Electronic Controller (EEC)
Mod 73-101559		 EMM 73-21-01-000-801-B00 [ Global Express ]  [ G5000 ]  [ Global XRS ]
Installation of the Eng Electronic Controller (EEC)
Mod 73-101559		 EMM 73-21-01-400-801-B001 [ Global Express ]  [ G5000 ]  [ Global XRS ]
Wire Repair - Maintenance Practices - ALL SPM 20-12-10-02 [ Global Express ]  [ G5000 ]  [ Global XRS ]

Troubleshooting Recommendations:

CAUTION: DO NOT DO ELECTRICAL CHECKS INTO THE ENGINE ELECTRONIC CONTROLLER (EEC). IF YOU DO NOT OBEY THIS INSTRUCTION, DAMAGE TO THE EEC CAN OCCUR.

  1. Perform a visual inspection of the interface wiring and connectors for damage between MTES and EEC (P1043).

    1. If there is damage, repair as required and do close out.
    2. If there is no damage, continue with next step.

  2. Perform wiring checks between between the pins of the connector MTES and P1043 (EEC).

    1. If wiring checks are not good, repair defective wiring as required and do close out.
    2. If wiring checks are good, continue with next step.

  3. Connect the connector P1043 and the contacts S1093 and S1094, and the ground connector GC1095.

    1. If the fault message does not occur, do close out.
    2. If the fault message was stored, then the fault could be intermittent. Monitor the system to see if the fault message occurs again and continue with next step.

  4. Perform a check of the insulation resistance of the interface between S1093 and S1094, and the connector P1043.

    1. If there is damage, repair as required and do close out.
    2. If there is no damage, continue with next step.

  5. Replace MTES.

    1. If system checks are good, do close out.
    2. If fault remains, continue with next step.

  6. Replace Left EEC.
  7. Do close out.



Registered and/or unregistered trademarks of Bombardier Inc. or its subsidiaries. © 2015 Bombardier Inc. All rights reserved.