© 2018 Avco Corporation. All Rights Reserved
Appendix D
November 2018
Page 481
TEO-540-C1A Engine Maintenance Manual
Fault ID
297
Fault Group
38
Fault Name
[FAULT: manifold temperature
cross-check]
Fault
Description
Manifold Temperature crosscheck fault
Fault Lamp
FFL
Root Cause
This fault indicates the combined and inferred manifold temperature differ by more than a
calibrated maximum threshold. The fault will become inactive if the combined and
inferred values converge
Troubleshooting Steps
1.
Are there any active MAT sensor slew rate, circuit or range faults? If yes, refer to troubleshooting
section for the active fault. If no, go to step 2.
2.
Contact Lycoming Engines.
Fault ID
298
Fault Group
38
Fault Name
[FAULT: deck temperature cross-
check]
Fault
Description
Deck Temperature crosscheck fault
Fault Lamp
FFL
Root Cause
This fault indicates the combined and inferred deck temperature differ by more than a
calibrated maximum threshold. The fault will become inactive if the combined and
inferred values converge
Troubleshooting Steps
1.
Are there any active deck temperature sensor slew rate, circuit or range faults? If yes, refer to
troubleshooting section for the active fault. If no, go to step 2.
2.
Contact Lycoming Engines.
Fault ID
299
Fault Group
38
Fault Name
[FAULT: manifold pressure cross-
check]
Fault
Description
Manifold Pressure crosscheck fault
Fault Lamp
FFL
Root Cause
This fault indicates the combined and inferred manifold pressure from throttle position
differ by more than a calibrated maximum threshold. The fault will become inactive if the
combined and inferred values converge
Troubleshooting Steps
1.
Are there any active MAP sensor slew rate, circuit or range faults? If yes, refer to troubleshooting
section for the active fault. If no, go to step 2.
2.
Contact Lycoming Engines.
Fault ID
300
Fault Group
38
Fault Name
[
FAULT: air mass flow rate cross-
check]
Fault
Description
Air mass flow crosscheck fault
Fault Lamp
FFL
Root Cause
This fault indicates the primary and secondary air mass flow differ by more than a
calibrated maximum threshold. The fault will become inactive if the primary and
secondary air mass flow rates converge
Troubleshooting Steps
1.
Are there any active venturi, CIP, or MAP sensor slew rate, circuit or range faults? If yes, refer to
troubleshooting section for the active fault. If no, go to step 2.
2.
Contact Lycoming Engines.
