background
x
loader
Troubleshooting
arrow By ATA By Message Color By Observed Faults by MDCBy 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

03/10/21

Message Overview:

Message Name:

LGWOFW2 BCU OVLD FAULT

Message Code:

B3-006580

Associated CAS:

None

Reporting LRU: BCU;LGWOFW2
System Description: 32-60-00
Schematic Diagram: 32-61-00
Wiring Diagram: 32-43-01
32-43-25
32-61-09

Message Description:

PSEU detects an overload condition on the discrete output to the Brake Control Unit (BCU).

Possible Causes:

  • Brake Control Unit (BCU) (A67)
  • Proximity-Sensor Electronic Unit (PSEU) (A9)
  • Associated Wiring

Troubleshooting Tips:

Advisory Wire/Service Bulletin: None

Forum Articles/Infoservice/Newsletter: None

Quick Links:

Operational Test of the Brake System AMM 32-43-00-710-801
Removal of the Brake Control Unit AMM 32-43-01-000-801
Installation of the Brake Control Unit AMM 32-43-01-400-801
Removal of the Proximity-Sensor Electronic Unit (PSEU) AMM 32-61-09-000-801
Installation of the Proximity-Sensor Electronic Unit (PSEU) AMM 32-61-09-400-801
Functional Test of the Proximity-Sensor Electronic Unit (PSEU) AMM 32-61-09-720-801
Standard Practices - Replace Wiring SPM 20-12-00-02
Standard Practices - Wire Repair SPM 20-12-10-02

Troubleshooting Recommendations:

  1. Do wiring check from the BCU (A67) connector A67P1 Pin 14 to the PSEU connector A9AP1 Pin 3J. Repair as required.

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

  2. Replace the BCU.

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

  3. Replace the PSEU.
  4. Do close out.

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