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Appendix D
November 2018
Page 509
TEO-540-C1A Engine Maintenance Manual
Fault ID
408
Fault Group
52
Fault Name
[FAULT: ADL hardware failure]
Fault
Description
Data logger failure fault
Fault Lamp
None
Root Cause
This fault could be caused from multiple data logger hardware issues such as: RTC battery
low, missing calibration data, Manufacturer ID is incorrected, RTC is incorrect or the
Accelerometer is broken. The fault will become inactive if the data logger hardware issue
is resolved
Troubleshooting Steps
1.
Is fault active? If yes, replace the data logger, then go to step 3. If no, go to step 2.
2.
Is fault 410 (
ADL_STATE_RTC reception failure
) * active or logged? If no, go to step 3. If yes replace the
data logger and go to step 3.
3.
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.
*NOTE: The ADL hardware fault and ADL_STATE_RTC reception failure fault occurring simultaneously
is an indication that the ADL RTC battery is depleted.
Fault ID
409
Fault Group
52
Fault Name
[FAULT: ADL software error]
Fault
Description
Data logger software error fault
Fault Lamp
None
Root Cause
This fault indicates the data logger task wasn’t completed in its allotted time possibly due
to a software functionality issue.
Troubleshooting Steps
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 3. If yes, go to step 2.
2.
Contact Lycoming Engines to correct the calibration files and reflash the ADL. Is fault still active? If
no, go to step 3. If yes, replace ADL.
3.
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.
Fault ID
410
Fault Group
52
Fault Name
[FAULT: ADL_STATE_RTC
reception failure]
Fault
Description
Data logger state/RTC message
reception failure fault
Fault Lamp
None
Root Cause
This fault indicates a failure receiving the appropriate message from data logger possibly
due to an issue with data logger communications
Troubleshooting Steps
1.
Is fault active or logged? If yes, go to step 2. If no, go to step 4.
2.
Is fault 408 (
ADL hardware failure
) active? If yes, replace the data logger then go to step 5. If no, go to step 3.
3.
Inspect data logger and cabling for damage. If damage is noted, repair damage in accordance with aircraft
maintenance manual. If data logger is damaged, replace. If no damage noted, go to step 4.
4.
Complete a continuity test of the harness from the data logger connector to the ECU connector using the
engine system schematic in Appendix B and airframe wiring manual. If the continuity check fails, isolate
to affected harness by disconnecting the airframe interface connection AF-P1. If the continuity fails
between the data logger and AF-J1, repair cable in accordance with aircraft maintenance manual. If the
continuity fails between AF-P1 and ECU, contact Lycoming Engines. If the continuity checks good,
replace the data logger.
5.
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.
*NOTE: The ADL hardware fault and ADL_STATE_RTC reception failure fault occurring simultaneously
is an indication that the ADL RTC battery is depleted.