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

04/06/21

Message Overview:

Message Name:

DISCRETE INPUT TO DCU
(Service Message)

Message Code:

B3-006392

Associated CAS:

None

Reporting LRU: BLEED VALVE 1
System Description: 36-10-00
Schematic Diagram: 36-11-00
Wiring Diagram: 36-15-01

Message Description:

A disagreement has been detected between the position feedback from the BLEED VALVE 1 to the Data Concentrator Unit and the Left PBA selection feedback to the Data Concentrator Unit.

Possible Causes:

  • Bleed Valve 1
  • Data Concentrator Unit (DCU) (A14)
  • Left PBA selection feedback to the Data Concentrator Unit (DCU)
  • Associated Wiring

Troubleshooting Tips:

Advisory Wire/Service Bulletin: None

Forum Articles/Infoservice/Newsletter: None

Fault Confirmation Procedure:

  1. Message# = 5
  2. Comp Id = V03
  3. {Term Definitions}

    1. DWDC1-9 1X 106 00 EXCT XXXX-XXXX XXXT-XXXX XXXX-XXXX 106A: 21;L BV OPEN
    2. DWDC1-8 1X 106 00 EXCT XXXX-XXXX XXXX-XTXX XXXX-XXXX 106A: 19;L BLEED PBA SEL OFF

Quick Links:

Removal of the Data Concentrator Unit (DCU) AMM 31-41-01-000-802
Installation of the Data Concentrator Unit (DCU) AMM 31-41-01-400-802
Removal of the Bleed Check Valve AMM 36-11-09-000-801
Installation of the Bleed Check Valve AMM 36-11-09-400-801
Removal of the Cross-Bleed Valve AMM 36-11-15-000-801
Installation of the Cross-Bleed Valve AMM 36-11-15-400-801
Deactivation of the Cross-Bleed Valve AMM 36-11-15-040-801
Activation of the Cross-Bleed Valve AMM 36-11-15-440-801
Wiring - Maintenance Practices - ALL SPM 20-12-00-02
Wire Repair - Maintenance Practices - ALL SPM 20-12-10-02
Electrical Connectors - Maintenance Practice - ALL SPM 20-20-00-02

Troubleshooting Recommendations:

  1. Do a wiring check.

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