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(WARNING)
RED MESSAGE (CAUTION)
AMBER MESSAGE (ADVISORY)
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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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09/11/23

Message Overview:

Fault Message:

CPC1 DISCRETE INPUT WIRING

Fault Code:

2137325ABG

Associated CAS:

None

Reporting LRU: Cabin Pressure Controller (CPC) 1
System Description: 21-31-00 - Cabin-Pressure Control 
Schematic Diagram: [ Global Express ]  [ G5000 ]  [ Global XRS ] 21-31-00-101 - Cabin Pressure Control System
Wiring Diagram: [ Global Express ]  [ G5000 ]  [ Global XRS ] 21-31-01-1 - Cabin Pressure Control System # 1

Message Description:

Cabin Pressure Controller (CPC) 1 does not recognize the pin programming.

Possible Causes:

  • Cabin Pressure Controller (CPC) 1 (A21)
  • Ground Stud (GS135)
  • Associated Wiring

Troubleshooting Tips:

Advisory Wire/Service Bulletin: None

Forum Articles/Infoservice/Newsletter: None

Quick Links:

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
Removal of the Cabin Pressure Controllers [ G5000 ]  [ Global Express ]  [ Global XRS ] AMM21-31-01-000-801
Installation of the Cabin Pressure Controllers [ G5000 ]  [ Global Express ]  [ Global XRS ] AMM21-31-01-400-801
Operational Test of the Cabin-Pressure-Controller Pressure Sensors [ G5000 ]  [ Global Express ]  [ Global XRS ] AMM21-31-01-710-801
Connect Electrical Power to the Aircraft [ G5000 ]  [ Global Express ]  [ Global XRS ] AMM24-00-00-861-801
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
CAIMS PMAT General Instructions [ G5000 ]  [ Global Express ]  [ Global XRS ] AMM45-45-00-970-801
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

Troubleshooting Recommendations:

  1. Perform wiring checks of the wire connected to A21P1-13.

    1. If the wiring checks are good, go to step 4.
    2. If the wiring checks are not good, repair as required and do the close out.

  2. Make sure GS135 is properly grounded.

    1. If GS135 is not properly grounded, repair as required and do close out.
    2. If GS135 is properly grounded, continue with the next step.

  3. Perform visual check of A21P1-12. Make sure there is no wire connected to pin 12. Pin 12 is used for CPC 2 position.

    1. If fault indication is gone, do close out.
    2. If fault remains, continue with the next step.

  4. Interchange CPC 1 with CPC 2.
  5. Does the fault follow the CPC?

    1. If YES, replace the CPC 1 and do close out.
    2. If NO, continue with the next step.

  6. Do close out.

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