Lycoming TEO-540-C1A Maintenance Manual page 414

3. If the "ECU Connection
Status" indicator in the lower
left corner of the screen reads
"Not Connected" (Figure C-
23):
A. Examine the cable and
connection between the
CAN Adapter and the
ECU to make sure the
connections are secure,
and the cable is not
damaged.
B. Replace damaged cables
or cables with damaged
connectors.
C. Attach the cable per the
"ECU to FST
Connection" Chapter in
this manual.
D. 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"
previously in this chapter.
4. If the engine serial number
displayed by the FST is not
the same as the serial number
on the engine data tag:
A. Click the Edit S/N
(Figure C-24) button on
the "Engine Serial
Number" panel.
B. Enter the correct engine
serial number in the
"New Serial Number"
box of the "Prompt User
for Input" window.
C. Click OK then click
Upload on the "Engine
Serial Number" panel.
Appendix C
Page 384
TEO-540-C1A Engine Maintenance Manual
Figure C-23
ECU Not Connected
Figure C-24
New Serial Number Window
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November 2018