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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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04/22/21

Message Overview:

Message Name:

OIL TEMP SENSOR 2A

Message Code:

B3-303625

Associated CAS:

None

Reporting LRU: L ENG OIL TEMP
System Description: 79-30-00
Schematic Diagram: None
Wiring Diagram: None

Message Description:

Left engine oil temperature sensor fault 2A.

[MCID 1008]
Oil Temperature Sensor 2A.
Detection of a fault in the oil temperature sensor harness between the oil temperature sensor and the ECU A. The ECU A cannot support full system operation.

Possible Causes:

  • Oil Temperature Transducer
  • Full Authority Digital Engine Control Unit (FADEC) Electronic Control Unit A (ECU) (A41)
  • Wiring Harness (W6)
  • Wiring Harness (W4)

Troubleshooting Tips:

Advisory Wire/Service Bulletin: None

Forum Articles/Infoservice/Newsletter: None

Quick Links:

Removal of the Engine Electronic Control Unit (ECU) AMM 76-10-05-000-801
Installation of the Engine Electronic Control Unit (ECU) AMM 76-10-05-400-801
Removal of the Oil Pump AMM 79-21-01-000-802
Installation of the Oil Pump AMM 79-21-01-400-802
Removal of the Oil Filter AMM 79-21-05-000-801
Installation of the Oil Filter AMM 79-21-05-400-801
Removal of the Chip Detector AMM 79-21-09-000-801
Installation of the Chip Detector AMM 79-21-09-400-801
Removal of the Oil Filter Bypass-Indicator AMM 79-31-01-000-802
Installation of the Oil Filter Bypass-Indicator AMM 79-31-01-400-802
Removal of the Oil Temperature Transducer AMM 79-31-05-000-801
Installation of the Oil Temperature Transducer AMM 79-31-05-400-801
Removal of the Oil Pressure Transducer AMM 79-31-09-000-801
Installation of the Oil Pressure Transducer AMM 79-31-09-400-801
Removal of the Oil Level Probe AMM 79-31-13-000-801
Installation of the Oil Level Probe AMM 79-31-13-400-801
Wire Repair - Maintenance Practices - ALL SPM 20-12-10-02

Troubleshooting Recommendations:

  1. MCID 1008 fault present, troubleshoot using the following steps for aircraft and engine fault isolation with reference to the Light Engine Maintenance Manual Subtask 72-00-00-810-168-A01.

Oil Temp BlockOil Temp Transducer

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