Fault Isolation; Recommended Approach To Fault Isolation - Lycoming TEO-540-C1A Maintenance Manual

TEO-540-C1A Engine Maintenance Manual
TEO-540-C1A Engine Maintenance Manual

1. Recommended Approach to Fault Isolation

The Field Service Tool (FST) is a diagnostic software tool loaded on a digital display device
(computer laptop, Notebook, etc. running Microsoft
the engine using the iE
(ST-530). As the EECS components and the Engine Control Unit (ECU) monitor and control
engine operation. The optional Data Logger (if installed) continuously collects data.
When connected to the ECU the FST can:
• Display fault codes (referenced in the Trouble-Shooting Guide in Appendix D)
• Clear fault codes
• Display real time engine data
• Download Data Logger data
The data history can show trends to further help with engine diagnostics. The FST is to be used
only during servicing and maintenance and NOT during flight.
A. Additional Fault Isolation Guidelines
(1) In addition to the FST, the Fault Isolation Guide in Table 1 shows the specific problems,
causes, and corrections. Continue from the simplest to the most complex possible causes
and corrections.
(2) Review maintenance logs to identify trends and possible causes.
(3) Discuss operational problems with the pilot to identify background, details, or incidents
of unusual operation.
(4) The "Ref." column in Table 1 contains references to the following:
(a) A lone numeric entry such as "72-00" refers to a chapter in this manual.
(b) IOM refers to the TEO-540-C1A Engine Installation and Operation Manual.
(c) AMM refers to the Airframe Manufacturer's Manual.
(d) POH refer to the Pilot's Operating Handbook.
B. Record all findings and corrective action.
Problem
Engine will not start or
starts with difficulty
© 2018 Avco Corporation. All Rights Reserved
November 2018

12-30 - FAULT ISOLATION

2
Service Cable (ST-528) and the iE
TO ENSURE CORRECT EECS OPERATION, DO NOT USE THE FST
DURING FLIGHT.
Fault Isolation Guide
Cause
Discharged battery
Incorrect starting
procedure
Power control open too far
Faulty starter
®
Windows 7, 8.1, or 10) that interfaces with
2
Field Service Tool CAN Interface
Table 1
Corrective Action
Replace with a charged battery.
Obey starting procedures or the
Pilot's Operating Handbook.
Set power control all the way
aft.
Complete the "Starter
Replacement" procedure.
Ref.
AMM
IOM
POH
72-70
12-30
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