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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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07/11/19

Message Overview:

Fault Message:

COCKPIT RDCP/WRG

Fault Code:

2844603PK

Associated CAS:

None

Reporting LRU: Fuel Management Quantity and Gauging Computer (FMQGC)
System Description: 28-23-00
Schematic Diagram: 28-23-00 [ Global Express ]  [ G5000 ]  [ Global XRS ]
Wiring Diagram: 28-23-01 [ Global Express ]  [ G5000 ]  [ Global XRS ]
24-00-14 [ Global Express ]  [ G5000 ]  [ Global XRS ]
24-00-14 [ Global Express ]  [ G5000 ]  [ Global XRS ]

Fault Description:

The Fuel Management Quantity and Gauging Computer (FMQGC) cannot sense the REFUEL/DEFUEL Control Panel (RDCP) data busses.

Possible Causes:

  • Junction Box (JB6)/PCB1
  • Junction Box (JB6)/PCB3
  • Auxiliary Power Unit (APU) Start Contactor Assembly (ACSA) (A48)
  • Refuel/Defuel Control Panel (RDCP) (A46)
  • Refuel/Defuel Control Panel (RDCP) (A213)
  • Fuel Management Quantity and Gauging Computer (FMQGC) (A47)
  • Associated Wiring

Troubleshooting Tips:

Advisory Wire/Service Bulletin: None

Forum Articles/Infoservice/Newsletter: None

Quick Links:

Connect Electrical Power to the Aircraft AMM 24-00-00-861-801 [ Global Express ]  [ G5000 ]  [ Global XRS ]
Remove the Electrical Power from the Aircraft AMM 24-00-00-861-802 [ Global Express ]  [ G5000 ]  [ Global XRS ]
Opening of Non-Thermal Circuit Breakers AMM 24-00-00-863-801 [ Global Express ]  [ G5000 ]  [ Global XRS ]
Closing of Non-Thermal Circuit Breakers AMM 24-00-00-863-802 [ Global Express ]  [ G5000 ]  [ Global XRS ]
Electrical/Electronic Safety Precautions AMM 24-00-00-910-801 [ Global Express ]  [ G5000 ]  [ Global XRS ]
Removal of the Junction Box JB6 Circuit-Cards AMM 24-00-14-000-801 [ Global Express ]  [ G5000 ]  [ Global XRS ]
Installation of the Junction Box JB6 Circuit-Cards AMM 24-00-14-400-801 [ Global Express ]  [ G5000 ]  [ Global XRS ]
Removal of the REFUEL/DEFUEL Control Panel AMM 28-23-01-000-801 [ Global Express ]  [ G5000 ]  [ Global XRS ]
Installation of the REFUEL/DEFUEL Control Panel AMM 28-23-01-400-801 [ Global Express ]  [ G5000 ]  [ Global XRS ]
Operational Test of the Refuel/Defuel Control Panel AMM 28-23-01-710-801 [ Global Express ]  [ G5000 ]  [ Global XRS ]
Removal of the Computer AMM 28-41-01-000-801 [ Global Express ]  [ G5000 ]  [ Global XRS ]
Installation of the Computer AMM 28-41-01-400-801 [ Global Express ]  [ G5000 ]  [ Global XRS ]
Access to Active Faults AMM 45-45-00-970-802 [ Global Express ]  [ G5000 ]  [ Global XRS ]
Safety Precautions - Maintenance Practices - ALL SPM 20-00-01-02 [ Global Express ]  [ G5000 ]  [ Global XRS ]
Wire Repair - Maintenance Practices - ALL SPM 20-12-10-02 [ Global Express ]  [ G5000 ]  [ Global XRS ]

Troubleshooting Recommendations:

  1. Disconnect the connector A213P1 from the REFUEL/DEFUEL control panel. In the front spar RH on the REFUEL/DEFUEL control panel, set the switch START-STOP/SOV TEST to START and Perform a check for 28 ±2 VDC on the wiring side as follows:

    From To Result
    A213P1-12 A213P1-13 28 ±2 VDC

    1. If there is 28 ±2 VDC, continue with step 6.
    2. If there is no 28 ±2 VDC, continue with next step.

  2. Disconnect the connector A48P1 from the ASCA and perform a check for 28 ±2 VDC on the LRU side as follows:

    From To Result
    A48P1-T A48P1-U 28 ±2 VDC

    1. If there is no 28 ±2 VDC, perform a troubleshooting for "DC/Batt Bus Isolated".
    2. If there is 28 ±2 VDC, continue with next step.

  3. Perform a continuity check as follows:

    From To Result
    A48P1-T JB6EP1-59
    A48P1-U JB6BP1-41
    JB6EP1-56 A213P1-13
    JB6DP1-6A A213P1-12
    A213P1-16 GS906
    A213P1-17 GS907
    A213P1-18 GS908
    A213P1-19 GS909

    1. If there is no continuity, repair or replace defective wiring as required and do close out.
    2. If there is continuity, continue with next step.

  4. Check the relay K1 operation in the circuit-card 3 test points (refer to WM 24-00-14 sheet 8).

    1. If it is defective, replace the circuit-card 3 from JB6 and do close out.
    2. If it is not defective, continue with next step.

  5. Check the relay K8 operation in the circuit-card 1 test points (refer to WM 24-00-14 sheet 1).

    1. If it is defective, replace the circuit-card 1 from JB6 and do close out.
    2. If it is not defective, continue with next step.

  6. Perform a continuity check as follows:

    From To Result
    A213P1-4 A47EP1-A11
    A213P1-5 A47EP1-A12
    A213P1-6 A47EP1-C11
    A213P1-7 A47EP1-C12
    A213P1-8 A47EP1-E11
    A213P1-9 A47EP1-E12
    A213P1-10 A47EP1-G11
    A213P1-11 A47EP1-G12
    A47FP1-12 JB6BP1-35
    A47CP1-E1 JB6BP1-37
    A47FP1-11 GS43
    A47FP1-17 GS43

    1. If there is no continuity, repair or replace defective wiring as required and do close out.
    2. If there is continuity, replace the REFUEL/DEFUEL control panel and continue with next step.

  7. Check if the fault message "COCKPIT REFUEL/DEFUEL PANEL/WRG FLT" is still present.

    1. If NO, do close out.
    2. If YES, continue with next step.

  8. Perform a continuity check as follows:

    From To Result
    A46P1-4 A47EP1-A14
    A46P1-5 A47EP1-A15
    A46P1-6 A47EP1-C14
    A46P1-7 A47EP1-C15
    A46P1-8 A47EP1-E14
    A46P1-9 A47EP1-E15
    A46P1-10 A47EP1-G14
    A46P1-11 A47EP1-G15
    A47FP1-12 JB6BP1-35
    A47CP1-E1 JB6BP1-37
    A47FP1-11 GS43
    A47FP1-17 GS43

    1. If there is no continuity, repair or replace defective wiring as required and do close out.
    2. If there is continuity, continue with next step.

  9. Replace the FMQGC.
  10. Do close out.

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