09/25/19
Message Overview:
Fault Message:
R LOW PRESS FUEL FILTER BLKG
Fault Code:
7326514RBR
Associated CAS:
| Reporting LRU: | Engine Electronic Controller (EEC) 2 |
| System Description: | 73-30-00 |
| Schematic Diagram: | None |
| Wiring Diagram: | 71-50-01 [ Global Express ] [ G5000 ] [ Global XRS ] |
Fault Description:
The Low Pressure (LP) Fuel Filter Differential Pressure Switch has detected an impending Fuel Filter Bypass.
Possible Causes:
- Low Pressure (LP) Fuel Filter Differential Pressure Switch
- Right Engine Electronic Controller (EEC)
- Fuel Low-Pressure Switch (P1114)
- Contaminated Fuel System
Troubleshooting Tips:
Advisory Wire/Service Bulletin: None
Forum Articles/Infoservice/Newsletter: None
- During an impending fuel filter blockage, "R FUEL FILTER DIFF PRESS WRG/SWITCH" CAIMS message could also be displayed when the engine is running. If this message is still shown when the engine is not running, it is an indication that the switch has failed open.
- The switch will open when the fuel filter differential pressure is 5±2 psid.
- The fuel filter bypass valve will open at 25±1 psid and will trigger the mechanical pop-up indicator on the fuel filter.
Fuel Synoptic page: Indication of a Fuel Filter blockage due to a pressure switch failed or impending filter blockage is detected.
Quick Links:
| Contamination Check of the Fuel System | AMM 28-00-00-750-801 [ Global Express ] [ G5000 ] [ Global XRS ] |
| Start the Engine | AMM 71-00-00-866-806 [ Global Express ] [ G5000 ] [ Global XRS ] |
| Engine Shutdown (Usual) | AMM 71-00-00-866-809 [ Global Express ] [ G5000 ] [ Global XRS ] |
| Opening of the Cowls | AMM 71-10-00-010-801 [ Global Express ] [ G5000 ] [ Global XRS ] |
| Closing of the Cowls | AMM 71-10-00-410-801 [ Global Express ] [ G5000 ] [ Global XRS ] |
| Removal of the LP Fuel Filter and Pop-Out Indicator | EMM 73-12-01-000-801 [ Global Express ] [ G5000 ] [ Global XRS ] |
| Installation of the LP Fuel Filter and Pop-Out Indicator | EMM 73-12-01-400-801 [ Global Express ] [ G5000 ] [ Global XRS ] |
| Removal of the HP filter | EMM 73-12-02-000-801 [ Global Express ] [ G5000 ] [ Global XRS ] |
| Cleaning of the HP Fuel Filter | EMM 73-12-02-110-801 [ Global Express ] [ G5000 ] [ Global XRS ] |
| Installation of HP filter | EMM 73-12-02-400-801 [ Global Express ] [ G5000 ] [ Global XRS ] |
Troubleshooting Recommendations:
- Check if CAIMS message "R FUEL FILTER DIFF PRESS WRG/SWITCH" is displayed when the engine is not running.
- If the message exists, troubleshoot a pressure switch failure and continue with next step.
- If the message does not exists, continue with next step.
- Check the LP fuel filter bypass valve mechanical pop-up indicator on the fuel filter.
- If system checks are good, do close out.
- If fault remains, continue with next step.
- Remove and examine the LP fuel filter and filter bowl for contamination.
- If system checks are good, do close out.
- If fault remains, continue with next step.
- Check the HP fuel filter and filter bowl for contamination.
- If system checks are good, do close out.
- If fault remains, continue with next step.
- Check the fuel system for contamination.
- If system checks are good, do close out.
- If fault remains, continue with next step.
- Run the engine and check the fuel system for contamination.
- If contamination not persists, do close out.
- If contamination persists, continue with next step.
- Remove and examine the LP fuel filter for contamination.
- If contamination not persists, do close out.
- If contamination persists, continue with next step.
- Replace the fuel low pressure switch.
- If system checks are good, do close out.
- If fault remains, continue with next step.
- Replace EEC 2.
- Do close out.