08/16/19
Message Overview:
Fault Message:
STEER-BY-WIRE SYSTEM FAULT
Fault Code:
3250003DWY
Associated CAS:
| Reporting LRU: | Steering Control Unit (SCU) |
| System Description: | 32-51-00 |
| Schematic Diagram: | 32-51-00 [ Global Express ] [ G5000 ] [ Global XRS ] |
| Wiring Diagram: | 32-51-01 [ Global Express ] [ G5000 ] [ Global XRS ] |
Fault Description:
This message shows when there is a problem with the Steer-by-Wire System, Steering Control Unit (SCU) or the related wiring interface. This is a generic system fault message. Refer to other CAIMS faults or SCU Non-Volatile Memory (NVM) to find the root cause.
Possible Causes:
- Steering Control Unit (SCU) (A36)
- Right Steering Actuator Feedback Position-linear Variable Differential-Transformer (LVDT) (MT16)
- Left Steering Actuator Feedback Position-linear Variable Differential-Transformer (LVDT) (MT17)
- Electro-Hydraulic Servo Valve (L12)
- Solenoid Select Valve (L1)
- Rudder Pedal Dual Rotary Variable Differential-Transducer (RVDT) (MT219)
- Steering Control Handwheel Rotary Variable-Differential Transformer (RVDT) Tiller (MT2)
- Associated Wiring
Troubleshooting Tips:
Advisory Wire/Service Bulletin:
- AW700-32-0280 - Nose Wheel Steering - Troubleshooting of SCU GW415-8100-3
Forum Articles/Infoservice/Newsletter: None
The Fault annunciation window in front of the Steering Control Unit (SCU) may be used to identify which part of the system failed. This fault is usually combined with other faults.
Quick Links:
| 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 Control Handwheel | AMM 32-51-05-000-801 [ Global Express ] [ G5000 ] [ Global XRS ] |
| Installation of the Steering Control Handwheel | AMM 32-51-05-400-801 [ Global Express ] [ G5000 ] [ Global XRS ] |
| Removal of the Rudder-Control Rotary-Variable Differential-Transducer (RVDT) |
AMM 32-51-09-000-801 [ Global Express ] [ G5000 ] [ Global XRS ] |
| Installation of the Rudder-Control Rotary-Variable Differential-Transducer (RVDT) |
AMM 32-51-09-400-801 [ 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 ] |
| Removal of the Steering Actuator | AMM 32-51-21-000-801 [ Global Express ] [ G5000 ] [ Global XRS ] |
| Installation of the Steering Actuator | AMM 32-51-21-400-801 [ Global Express ] [ G5000 ] [ Global XRS ] |
| Access to Active Faults | AMM 45-45-00-970-802 [ Global Express ] [ G5000 ] [ Global XRS ] |
| Wire Repair - Maintenance Practices - ALL | SPM 20-12-10-02 [ Global Express ] [ G5000 ] [ Global XRS ] |
Troubleshooting Recommendations:
- Check CAIMS for other active NWS faults.
- If there are NWS related CAIMS faults, troubleshoot them first and do close out.
- If there are no faults displayed in CAIMS, continue with next step.
- Check the Steering Control Unit Fault window for fault codes and use the correlation Table below to establish which part of the system is at fault as follows:
SCU Fault Window Code Action Required - If shown alone, System Fault.
Perform SCU NVM download and submit to Bombardier Customer Response Center.Ground Mode/No fault 00 Air Mode/No fault 01 Replace Steering Control Unit 02 Check Hand-wheel wiring, if good replace Hand-wheel 04 Check Rudder Pedal RVDT wiring, if good replace Rudder Pedal RVDT 05 Check Solenoid Selector Valve wiring, if good replace Solenoid Selector Valve 06 Perform Smart Fix plus troubleshooting for the following fault:
3250009DWY PRESSURE SWITCH #1 and #2 MISMATCH07 Check EHSV wiring, if good replace EHSV 08 Check Right Steering Actuator wiring, if good replace Right Steering Actuator 09 Check Left Steering Actuator wiring, if good replace Left Steering Actuator A Rigging Mode Entered C Rigging Mode Terminated E Rigging Fault - If there are no fault displayed in CAIMS or SCU fault window, perform an SCU NVM download and send it to Bombardier Customer Response Centre for analysis.
- Do close out.