Lycoming TEO-540-C1A Maintenance Manual page 516

Fault ID 314
Fault
TBO corrupt record fault*
Description
This fault indicates one or more corrupt records were found in the TBO fault record and
Root Cause
scratch blocks
1. With Ignition switch in OFF position, remove ECU power by pulling the ECU circuit breaker. Wait 10s
before resetting. Is fault active? If no, go to step 2. If yes, go to step 3.
2. Clear Service faults using the FST by following the steps outlined in the "Access the Field Service
Tool" section in Appendix C or the latest revision of SSP-118.
3. Set ignition switch to on, do not start engine, complete step 2. Is fault still active? If no, sequence
complete. If yes, replace the ECU.
*NOTE: This fault does not cause any performance or operational limitations.
Fault ID 315
Fault
TBO integrity failure fault*
Description
This fault indicates the ECU is unable to determine which TBO record block contains
Root Cause
valid fault data
1. With Ignition switch in OFF position, remove ECU power by pulling the ECU circuit breaker. Wait 10s
before resetting. Is fault active? If no, go to step 2. If yes, go to step 3.
2. Clear Service faults using the FST by following the steps outlined in the "Access the Field Service
Tool" section in Appendix C or the latest revision of SSP-118.
3. Set ignition switch to on, do not start engine, complete step 2. Is fault still active? If no, sequence
complete. If yes, replace the ECU.
*NOTE: This fault does not cause any performance or operational limitations.
Fault ID 316
Fault
TBO time discrepancy fault*
Description
This fault indicates tacho time differs between primary and secondary channel possibly
Root Cause
due to a memory corruption or one channel being down while the other was running.
1. With Ignition switch in OFF position, remove ECU power by pulling the ECU circuit breaker. Wait 10s
before resetting. Is fault active? If no, go to step 2. If yes, go to step 3.
2. Clear Service faults using the FST by following the steps outlined in the "Access the Field Service
Tool" section in Appendix C or the latest revision of SSP-118.
3. Set ignition switch to on, do not start engine, complete step 2. Is fault still active? If no, sequence
complete. If yes, replace the ECU.
*NOTE: This fault does not cause any performance or operational limitations.
Appendix D
Page 486
Fault Group 40
Troubleshooting Steps
Fault Group 40
Troubleshooting Steps
Fault Group 40
Troubleshooting Steps
TEO-540-C1A Engine Maintenance Manual
Fault Name
[FAULT: TBO Corrupt Record]
Fault Lamp
Fault Name
[FAULT: TBO Integrity Failure]
Fault Lamp
Fault Name
[FAULT: TBO time discrepancy]
Fault Lamp
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November 2018