Field Service Tool - Software Problems - Lycoming TEO-540 Series User's Manual And Troubleshooting Manual

Field Service Tool User Manual
TEO-540-C1A Engine Maintenance Manual
Table 1 shows the more common and recurring problems, causes, and corrective actions. Continue
from the simplest to the most complex possible causes.
Problem
Software will not load
on the laptop.
Laptop will not
interface with the ECU.
After opening the FST
program, the "ECU
Connection Status"
indicator in the lower
left corner of the screen
is not lit.
After opening the FST
program, both the
"ECU Connection
Status" indicator and
the "CAN Hardware
Status" indicator in the
lower left corner of the
screen are not lit.
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August 2022

FIELD SERVICE TOOL - SOFTWARE PROBLEMS

Corrective Action Guide
Cause
Laptop operating system is
not compatible with Field
Service Tool software.
Aircraft power is off.
Cable is not connected.
Cable is damaged or broken.
CAN Adapter is not
operating correctly.
There is no communication
between the laptop and the
ECU.
There is a problem with the
connecting hardware and/or
cables.
Table 1
Make sure the laptop has Windows 7 or 10
operating system installed.
Replace the laptop if necessary.
Turn the aircraft power on.
Check all cable connections; make sure all
plugs are correctly installed.
Contact Lycoming for a replacement iE
Service Cable (ST-528).
Contact Lycoming for a replacement iE
Field Service Tool CAN Interface (ST-530).
Close the FST program per the "Close the
FST Program" section in this chapter then
start to FST program per the "Start the FST
Program" in the "Access the Field Service
Tool" chapter.
Examine the cable and connection
1.
between the CAN Adapter and the ECU
to make sure the connections are secure,
and the cable is not damaged.
Replace damaged cables or cables with
2.
damaged connectors.
Attach the cable per the "ECU to FST
3.
Connection" Chapter in this manual.
Start to FST program per the "Start the
4.
FST Program" in the "Access the Field
Service Tool" chapter.
Field Service Tool – Software Problems
Corrective Action
2
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