Lycoming TEO-540-C1A Maintenance Manual page 509

TEO-540-C1A Engine Maintenance Manual
Fault ID 289
Fault Manifold Temperature Discrepancy
Description Fault
This fault indicates MAT 1 and MAT 2 differ by more than a maximum discrepancy
Root Cause threshold. The fault will become inactive if MAT 1 and MAT 2 converge below the
maximum discrepancy
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 290
Fault Engine Load airflow SD Vs Venturi
Description Discrepancy fault
This fault indicates venturi airflow (primary airflow measurement) and speed density
(secondary airflow measurement) differ by more than calibrated threshold. The fault will
Root Cause
become inactive once the discrepancy between venturi and speed density airflow values
are below the maximum discrepancy limit
1. Are there any active slew rate, circuit or range faults for the venturi sensor, MAP sensor, MAT sensor,
or Deck Temperature? If yes, refer to troubleshooting section for the active fault. If no, go to step 2.
2. Contact Lycoming Engines.
Fault ID 291
Fault
Engine Load airflow ST Vs SD fault
Description
This fault indicates ST airflow (tertiary airflow measurement) and speed density
(secondary airflow measurement) differ by more than calibrated threshold. The fault will
Root Cause
become inactive once the discrepancy between tertiary and speed density airflow values
are below the maximum discrepancy limit
1. Are there any active slew rate, circuit or range faults for the venturi sensor, MAP sensor, MAT sensor,
or Deck Temperature? If yes, refer to troubleshooting section for the active fault. If no, go to step 2.
2. Contact Lycoming Engines.
Fault ID 292
Fault Engine Load airflow ST Vs Venturi
Description fault
This fault indicates ST airflow (tertiary airflow measurement) and speed density
(secondary airflow measurement) differ by more than calibrated threshold. The fault will
Root Cause
become inactive once the discrepancy between tertiary and speed density airflow values
are below the maximum discrepancy limit
1. Are there any active slew rate, circuit or range faults for the venturi sensor, MAP sensor, MAT sensor,
or Deck Temperature? If yes, refer to troubleshooting section for the active fault. If no, go to step 2.
2. Contact Lycoming Engines.
© 2018 Avco Corporation. All Rights Reserved
November 2018
Fault Group 37
Troubleshooting Steps
Fault Group 37
Troubleshooting Steps
Fault Group 37
Troubleshooting Steps
Fault Group 37
Troubleshooting Steps
[FAULT: manifold temperature
Fault Name
discrepancy]
Fault Lamp
[FAULT: engine load airflow speed
Fault Name
density vs venturi discrepancy]
Fault Lamp
[FAULT: engine load airflow speed
Fault Name
throttle vs speed density discrepancy]
Fault Lamp
[FAULT: engine load airflow speed
Fault Name
throttle vs venturi discrepancy]
Fault Lamp
FFL
FFL
FFL
FFL
Appendix D
Page 479