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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

10/02/20

Message Overview:

Fault Message:

ACPC GTC 9 CONTACTOR-K2 FAILED

Fault Code:

2451349ACP

Associated CAS:

ELEC SYS FAULT
(Advisory)

Reporting LRU: AC Power Center (ACPC)
System Description: 24-50-00
Schematic Diagram: 24-51-00 [ Global Express ]  [ G5000 ]  [ Global XRS ]
Wiring Diagram: 24-51-01 [ Global Express ]  [ G5000 ]  [ Global XRS ]

Fault Description:

The AC Power Center (ACPC) Primary Logic Cards (PLC) detect a discrepancy between coil drive status and auxiliary contact status of the contactor K2.

Possible Causes:

  • AC Power Center (ACPC) Contactor (K2)
  • AC Power Center (ACPC) (A54)
  • AC Power Center (ACPC) TB601
  • AC Power Center (ACPC) TB202
  • AC Power Center (ACPC) TB101
  • Electronic Module 1 (EM1)
  • Primary Logic Card (PLC)
  • Primary Logic Card (PLC)
  • Primary Logic Card (PLC)
  • Associated Wiring

Troubleshooting Tips:

Advisory Wire/Service Bulletin: None

Forum Articles/Infoservice/Newsletter: None

Quick Links:

Removal of the AC Power Center (ACPC) AMM 24-51-00-000-801 [ Global Express ]  [ G5000 ]  [ Global XRS ]
Installation of the AC Power Center (ACPC) AMM 24-51-00-400-801 [ Global Express ]  [ G5000 ]  [ Global XRS ]
Removal of the AC Power Center (ACPC) Primary Logic AMM 24-51-09-000-801 [ Global Express ]  [ G5000 ]  [ Global XRS ]
Installation of the AC Power Center (ACPC) Primary Logic AMM 24-51-09-400-801 [ Global Express ]  [ G5000 ]  [ Global XRS ]
Removal of the AC Power Center (ACPC) L-Series Contactors AMM 24-51-33-000-801 [ Global Express ]  [ G5000 ]  [ Global XRS ]
Installation of the AC Power Center (ACPC) L-Series Contactors AMM 24-51-33-400-801 [ Global Express ]  [ G5000 ]  [ Global XRS ]
Removal of the AC Power Center (ACPC) Electronic Modules AMM 24-51-81-000-801 [ Global Express ]  [ G5000 ]  [ Global XRS ]
Installation of the AC Power Center (ACPC) Electronic Modules AMM 24-51-81-400-801 [ Global Express ]  [ G5000 ]  [ Global XRS ]
Wire Repair - Maintenance Practices - ALL SPM 20-12-10-02 [ Global Express ]  [ G5000 ]  [ Global XRS ]
AC Power Center Component Maintenance Manual CMM 24-51-02 [ Global Express ]  [ G5000 ]  [ Global XRS ]

Troubleshooting Recommendations:

  1. Disconnect contactor K2 connector P106.
  2. In the cockpit, turn the BATT MSTR SW to ON.
  3. Check for 28 Volts DC between P106 to ground as follow:

    From To Result
    P106-1 Ground

    1. If there is Voltage, go to step 5.
    2. If there is no Voltage, continue with next step.

  4. Perform wiring checks between EM1, TB101 and TB202 as follow:

    From To Result
    P407 TB202-1
    TB101-1 TB202-1

    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.

  5. In the cockpit, turn the BATT MSTR SW to OFF.
  6. Perform a continuity check between K2 to ground as follows:

    From To Result
    P106-1 Ground

    1. If there is continuity, go to step 9.
    2. If there is no continuity, continue with next step.

  7. Check TB101-2 connection. Repair as required.

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

  8. Check TB601-7 connection. Repair as required.

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

  9. Remove PLC 1, PLC 2 and PLC 3.
  10. Perform a continuity check on K8 relay between K2 and ground as follows:

    From To Result
    P106-8 Ground
    P106-22 Ground

    1. If there is continuity, go to step 16.
    2. If there is no continuity, continue with next step.

  11. Perform a continuity check as follows:

    From To Result
    P106-22 P315C-36
    P106-22 P115C-36
    P106-22 P415C-36
    P106-8 P315B-22
    P106-8 P115B-22
    P106-8 P415B-22

    1. If there is continuity, continue with next step.
    2. If there is no continuity, go to step 16.

  12. Replace K2.

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

  13. Re-install PLC 2 and PLC 3.

    1. If system checks is good, replace PLC 1 and do close out.
    2. If fault remains, continue with next step.

  14. Remove PLC 2 and reinstall PLC 1.

    1. If system checks is good, replace PLC 2 and do close out.
    2. If fault remains, continue with next step.

  15. Remove PLC 3 and reinstall PLC 2.

    1. If system checks is good, replace PLC 3 and do close out.
    2. If fault remains, continue with next step.

  16. Replace ACPC.
  17. Do close out.

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