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

07/22/19

Message Overview:

Fault Message:

DAU2A NO DATA / WRG

Fault Code:

3031008HBM

Associated CAS:

None

Reporting LRU: Heater/Brake-Temperature Monitoring Unit (HBMU) 2
System Description: 30-31-00
Schematic Diagram: 30-31-00 [ Global Express ]  [ G5000 ]  [ Global XRS ]
Wiring Diagram: 31-42-06 [ Global Express ]  [ G5000 ]  [ Global XRS ]

Fault Description:

Heater/Brake-Temperature Monitoring Unit (HBMU) 2 does not receive A429 data from Data Acquisition Unit (DAU) 2A.

Possible Causes:

  • Data Acquisition Unit (DAU) 2 (A18)
  • Junction Box 4 (JB4)
  • Heater/Brake-Temperature Monitoring Unit (HBMU) 2 (A93)
  • Associate Wiring

Troubleshooting Tips:

Advisory Wire/Service Bulletin: None

Forum Articles/Infoservice/Newsletter: None

Quick Links:

Removal of the Junction Box JB4 AMM 24-00-05-000-801 [ Global Express ]  [ G5000 ]  [ Global XRS ]
Installation of the Junction Box JB4 AMM 24-00-05-400-801 [ Global Express ]  [ G5000 ]  [ Global XRS ]
Removal of the Heater/Brake-Temperature Monitoring
Unit (HBMU)		 AMM 30-31-01-000-801 [ Global Express ]  [ G5000 ]  [ Global XRS ]
Installation of the Heater/Brake-Temperature Monitoring
Unit (HBMU)		 AMM 30-31-01-400-801 [ Global Express ]  [ G5000 ]  [ Global XRS ]
Removal of the Data Acquisition Units (DAU) AMM 31-42-01-000-801 [ Global Express ]  [ G5000 ]  [ Global XRS ]
Installation of the Data Acquisition Units (DAU) AMM 31-42-01-400-801 [ Global Express ]  [ G5000 ]  [ Global XRS ]
Wire Repair - Maintenance Practices - ALL SPM 20-12-10-02 [ Global Express ]  [ G5000 ]  [ Global XRS ]

Troubleshooting Recommendations:

  1. Swap HBMU 2 with HBMU 1.

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

  2. Swap DAU 2 with DAU 1.

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

  3. Perform wiring checks between JB4, DAU 2 and HBMU 2.

    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.

  4. Replace JB4.
  5. Do close out.

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