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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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08/16/19

Message Overview:

Fault Message:

STEERING SOLENOID VLV[OPEN CKT]/WRG

Fault Code:

3250014DWY

Associated CAS:

NOSE STEER FAIL
(Caution)

Reporting LRU: Steering Control Unit (SCU)
System Description: 32-51-00
Schematic Diagram: 32-51-00 [ Global Express ]  [ G5000 ]  [ Global XRS ]
Wiring Diagram: 32-51-02 [ Global Express ]  [ G5000 ]  [ Global XRS ]

Message Description:

The Steering Control Unit detected that there is pressure at Pressure Switch 1 when the Steering Switch is off and the Hydraulic System 3 is pressurized.

Possible Causes:

  • Steering Solenoid Valve (SSV) (L1)
  • Steering Control Unit (SCU) (A36)
  • Associated Wiring

Troubleshooting Tips:

Advisory Wire/Service Bulletin:

  • AW700-32-0280 - Nose Wheel Steering - Troubleshooting SCU GW415-8100-3

Forum Articles/Infoservice/Newsletter: None

Quick Links:

Rigging of the Nosewheel-Steering Control System (Recommended Procedure) AMM 32-51-00-820-801 [ Global Express ]  [ G5000 ]  [ Global XRS ]
Rigging Check of the Nosewheel-Steering Control System AMM 32-51-00-220-801 [ Global Express ]  [ G5000 ]  [ Global XRS ]
Removal of the Steering Control Unit AMM 32-51-01-000-801 [ Global Express ]  [ G5000 ]  [ Global XRS ]
Installation of the Steering Control Unit AMM 32-51-01-400-801 [ Global Express ]  [ G5000 ]  [ Global XRS ]
Removal of the Steering Solenoid Valve AMM 32-51-13-000-801 [ Global Express ]  [ G5000 ]  [ Global XRS ]
Installation of the Steering Solenoid Valve AMM 32-51-13-400-801 [ Global Express ]  [ G5000 ]  [ Global XRS ]
Wire Repair - Maintenance Practices - ALL SPM 20-12-10-02 [ Global Express ]  [ G5000 ]  [ Global XRS ]

Troubleshooting Recommendations:

  1. With no hydraulic pressure on the aircraft and the NLG doors open, manually close the NLG up-lock by hand.
  2. Select Hydraulic system 3 pumps 3A or 3B ON and check if the NLG Up-Lock opened.

    1. If the NLG Up-Lock did not open, troubleshoot the Landing Gear Selector Valve 3 using the GEAR DISAGREE procedure and not selecting any CAIMS message.
    2. If the NLG Up-Lock opened, continue with next step.

  3. Set the NOSE STEER switch to OFF.
  4. Disconnect the SSV connector (L1P1). Perform a voltage check between L1P1-A, and L1P1-B (28±2 VDC).

    1. If voltage is present replace the SCU.
    2. If voltage is not present replace the SSV.

  5. Do close out.

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