09/16/19
Message Overview:
Fault Message:
SHORT CKT - BOOST PUMP RELAY/WIRING
Fault Code:
4960218APU
Associated CAS:
| Reporting LRU: | Full-Authority Digital Engine-Controller (FADEC) |
| System Description: | 49-30-00 |
| Schematic Diagram: | 49-61-00 [ Global Express ] [ G5000 ] [ Global XRS ] |
| Wiring Diagram: | 28-20-01 [ Global Express ] [ G5000 ] [ Global XRS ] 28-21-01 [ Global Express ] [ G5000 ] [ Global XRS ] |
Fault Description:
The Fuel Pump relay signals from the AC Power Center (ACPC) are out of the expected range.
Possible Causes:
- Auxiliary Power Unit (APU) Full-Authority Digital Engine-Controller (FADEC) (A108)
- Associated Wiring
Troubleshooting Tips:
Advisory Wire/Service Bulletin: None
Forum Articles/Infoservice/Newsletter: None
Quick Links:
| Removal of the Full-Authority Digital Engine-Controller (FADEC) | AMM 49-61-01-000-801 [ Global Express ] [ G5000 ] [ Global XRS ] |
| Installation of the Full-Authority Digital Engine-Controller (FADEC) | AMM 49-61-01-400-801 [ Global Express ] [ G5000 ] [ Global XRS ] |
| Wire Repair - Maintenance Practices - ALL | SPM 20-12-10-02 [ Global Express ] [ G5000 ] [ Global XRS ] |
Troubleshooting Recommendations:
- Perform a wiring check between ACPC (A54P2) and FADEC (A108BP1) as follows:
From To Expected Result Result A54P2-M A108BP1-B5 <10 ohms A54P3-P A108BP1-B5 <10 ohms - If wiring checks are not good, repair defective wiring as required and do close out.
- If wiring checks are good, continue with next step.
- Make sure there is no short between A54P2-M and the connector shell of A54P2.
- Make sure there is no short between A54P3-P and the connector shell of A54P3.
- Do close out.