10/04/19
Message Overview:
Fault Message:
R CH B TURB O'HEAT WRG/PROBE RNG MA
Fault Code:
7327628RBR
Associated CAS:
| Reporting LRU: | Right Engine Electronic Controller (EEC) |
| System Description: | 77-20-00 |
| Schematic Diagram: | 77-20-00 [ Global Express ] [ G5000 ] [ Global XRS ] |
| Wiring Diagram: | 71-50-01 [ Global Express ] [ G5000 ] [ Global XRS ] 77-20-01 [ Global Express ] [ G5000 ] [ Global XRS ] |
Fault Description:
There is an open or short circuit in the interface wiring or the Turbine Overheat-Detection Thermocouple. During engine operation the Turbine Overheat-Detection Circuits are continuously monitored by the Full-Authority Digital Engine-Controller (FADEC).
Possible Causes:
- Turbine Overheat-Detection Thermocouple
- Right Engine Electronic Controller (EEC)
- Associated Wiring
Troubleshooting Tips:
Advisory Wire/Service Bulletin: None
Forum Articles/Infoservice/Newsletter: None
Quick Links:
| Connect Electrical Power to the Aircraft | AMM 24-00-00-861-801 [ Global Express ] [ G5000 ] [ Global XRS ] |
| Remove the Electrical Power from the Aircraft | AMM 24-00-00-861-802 [ Global Express ] [ G5000 ] [ Global XRS ] |
| Opening of Non-Thermal Circuit Breakers | AMM 24-00-00-863-801 [ Global Express ] [ G5000 ] [ Global XRS ] |
| Closing of Non-Thermal Circuit Breakers | AMM 24-00-00-863-802 [ Global Express ] [ G5000 ] [ Global XRS ] |
| Electrical/Electronic Safety Precautions | AMM 24-00-00-910-801 [ Global Express ] [ G5000 ] [ Global XRS ] |
| CAIMS PMAT General Instructions | AMM 45-45-00-970-801 [ Global Express ] [ G5000 ] [ Global XRS ] |
| Access to Active Faults | AMM 45-45-00-970-802 [ Global Express ] [ G5000 ] [ Global XRS ] |
| Access to Stored Faults | AMM 45-45-00-970-803 [ Global Express ] [ G5000 ] [ Global XRS ] |
| Engine Safety Precautions | AMM 71-00-00-910-801 [ 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 Bypass-Duct Access Panels (451AL/461AL, 451BL/461BL, 451CL/461CL, 451DL/461DL, 451EL/461EL, 452FR/462FR, 452GR/462GR, 452HR/462HR, 452JR/462JR, 452KR/462KR) |
AMM 72-71-01-000-801 [ Global Express ] [ G5000 ] [ Global XRS ] |
| Installation of the Bypass-Duct Access Panels (451AL/461AL, 451BL/461BL, 451CL/461CL, 451DL/461DL, 451EL/461EL, 452FR/462FR, 452GR/462GR, 452HR/462HR, 452JR/462JR, 452KR/462KR) |
AMM 72-71-01-400-801 [ Global Express ] [ G5000 ] [ Global XRS ] |
| Deactivation of the Thrust Reverser (for Maintenance) | AMM 78-30-00-040-801 [ Global Express ] [ G5000 ] [ Global XRS ] |
| Activation of the Thrust Reverser (for Maintenance) | AMM 78-30-00-440-801 [ Global Express ] [ G5000 ] [ Global XRS ] |
| Connection of Electrical Connectors | EMM 70-50-01-910-801 [ Global Express ] [ G5000 ] [ Global XRS ] |
| Removal of the Combustion Section Fairings | EMM 72-03-02-000-801 [ Global Express ] [ G5000 ] [ Global XRS ] |
| Installation of the Combustion Section Fairings | EMM 72-03-02-400-801 [ Global Express ] [ G5000 ] [ Global XRS ] |
| Removal of the Turbine Overheat-Detection Thermocouple | EMM 77-23-01-000-801 [ Global Express ] [ G5000 ] [ Global XRS ] |
| Installation of the Turbine Overheat-Detection Thermocouple | EMM 77-23-01-400-801 [ Global Express ] [ G5000 ] [ Global XRS ] |
| Safety Precautions - Maintenance Practices - ALL | SPM 20-00-01-02 [ Global Express ] [ G5000 ] [ Global XRS ] |
| Wire Repair - Maintenance Practices - ALL | SPM 20-12-10-02 [ Global Express ] [ G5000 ] [ Global XRS ] |
Troubleshooting Recommendations:
- Perform a visual inspection of the turbine overheat-detection system. Inspect for damage and proper installation.
NOTE: Look specially for signs of damage adjacent to clip locations.- If damage or defect is found, rectify or repair as required and do close out.
- If damage or defect is not found, continue with next step.
- Disconnect the EEC connector (P1047) and the bypass duct connectors (P1032 and J1032). Disconnect the interface wiring at the terminal blocks TB2210 and TB2225 and at the ground connector (GC2201). Perform a visual inspection of the wiring and connectors for damage between the connectors and the terminal blocks.
NOTE: Look specially for signs of chafing adjacent to clip locations, condition of connector pins and wiring kink or strain.- If defects are found, rectify or repair as required and do close out.
- If defects are not found, continue with next step.
- Perform a continuity check between the terminal blocks TB2210 and TB2225 (Chromel and Alumel terminal lugs) and the connector P1032 as follows:
From To Result TB2210 P1032-12 TB2225 P1032-13 - If there is no continuity, repair defective wiring as required and do close out.
- If there is continuity, continue with next step.
- Perform a continuity check between the connectors J1032 and P1047 as follows:
From To Result J1032-12 P1047-53 J1032-13 P1047-54 - If there is no continuity, repair defective wiring as required and do close out.
- If there is continuity, continue with next step.
- Perform a insulation resistance check of the wiring between the bypass duct and the terminal blocks as follows:
From To Resistance Value Result P1032-12 Ground 20 MΩ or more P1032-13 Ground 20 MΩ or more - If the resistance value is less than the value specified in the table or if there is a short to ground, repair defective wiring as required and do close out.
- If there is no continuity or resistance value is as specified in the table, continue with next step.
- Perform a insulation resistance check of the wiring between the EEC and the bypass duct connector (P1047) as follows:
From To Resistance Value Result P1047-53 Ground 20 MΩ or more P1047-54 Ground 20 MΩ or more - If the resistance value is less than the value specified in the table or if there is a short to ground, repair defective wiring as required and do close out.
- If there is no continuity or resistance value is as specified in the table, continue with next step.
- Replace turbine overheat-detection thermocouple.
- Do close out.
