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Appendix D
November 2018
Page 459
TEO-540-C1A Engine Maintenance Manual
Fault ID
244
Fault Group
31
Fault Name
-Reserved-
Fault
Description
Fault Lamp
TLO
Root Cause
Troubleshooting Steps
Fault ID
245
Fault Group
31
Fault Name
[FAULT: turbine inlet temperature 2
range]
Fault
Description
Primary: -reserved-
Secondary: TIT2 Sensor Range Fault
Fault Lamp
TLO
Root Cause
This fault occurs if the Engineering value of the measured parameter is outside the expected
window defined by the calibratable Highest and Lowest Valid Engineering Values.
The Highest and Lowest possible engineering values define the range of values that can be
expected for the entire engine operating envelope. Any value observed outside this envelope is
flagged as a sensor range fault.
Troubleshooting Steps
1.
Run the engine in accordance with the engine and aircraft maintenance manuals. Is the fault active?
If yes, go to step 3. If no, go to step 2.
2.
Using the FST, download active and service fault logs, then clear fault logs and monitor engine
operation for the fault to repeat.
3.
Inspect the sensor, sensor lead and connector. If there is damage found, replace the sensor per the
“Sensor Replacement Procedure” in Chapter 72-70. If there is no damage, go to step 4.
4.
Inspect engine harness for visible signs of damage. If damage is found, contact Lycoming Engines. If
no damage is found, go to step 5.
5.
Swap the sensor from the channel giving the fault with another sensor in a different position (if
equipped) and run the engine. Did the fault move with the sensor? If yes, replace the sensor per the
“Sensor Replacement Procedure” in Chapter 72-70. If there is no sensor to swap with, replace the
sensor. Did the fault clear? If no, complete a continuity test of the harness from the harness sensor
connector to the ECU connector using the engine system schematic. If the continuity check fails, isolate
to affected harness by disconnecting the firewall connection, then contact Lycoming Engines. If the
continuity checks good, replace the ECU.
6.
If the above steps are unsuccessful, contact Lycoming.