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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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03/16/21

Message Overview:

Message Name:

RFWSOV K60 OVLD FAULT

Message Code:

B3-307630

Associated CAS:

PROX SYS FAULT
(Advisory)

Reporting LRU: K60; RFWSOV
System Description: 32-60-00
Schematic Diagram: 32-61-00
Wiring Diagram: 29-12-35
32-61-09

Message Description:

Proximity Sensor Electronic Unit detects an overload condition on the discrete output to the RFWSOV Relay (K60).

Possible Causes:

  • Relay (K60)
  • Junction Box JB4 Circuit-Card 4 (JB4-DB4)
  • Proximity-Sensor Electronic Unit (PSEU) (A9)
  • Associated Wiring

Troubleshooting Tips:

Advisory Wire/Service Bulletin: None

Forum Articles/Infoservice/Newsletter: None

Quick Links:

Removal of the Junction Box JB4 Circuit-Cards AMM 24-63-13-000-803
Installation of the Junction Box JB4 Circuit-Cards AMM 24-63-13-400-803
Operational Test of Junction Box JB4 Card 4 AMM 24-63-13-710-804
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
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. Dowiring check from the JB4-DB4 connector JB4FP1 Pin 1A to the PSEU connector A9AP1 Pin 5K. Repair as required.

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

  2. Replace the Circuit Board 4 of the Junction Box 4.

    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.

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