Lycoming TEO-540-C1A Maintenance Manual page 451

TEO-540-C1A Engine Maintenance Manual
Fault ID 94
Fault
Description
Root Cause
Fault ID 95
Fault
Description
Root Cause
Fault ID 96
Fault Local Take off reserve switch stuck
Description fault
This fault indicates digital input local take-off switch is stuck "ON" possibly due to a
switch hardware issue. The fault will become inactive is the switch toggles to "OFF"
Root Cause
position
1. Disconnect wires from switch. Does fault go inactive? If yes, replace the switch. If no, go to step 2.
2. Complete a continuity and short circuit test of the harness from the switch connector(s) to ECU
connectors using the engine system schematic. If the continuity or short circuit check fails, isolate to
affected harness by disconnecting the airframe interface connection AF-P1. If problem is isolated to
engine airframe harness, contact Lycoming Engines. If problem is found from switch to AF-J1, repair in
accordance with aircraft maintenance manual. If the continuity check is good, replace the ECU.
Fault ID 97
Fault Local Take off reserve switch noise
Description fault
This fault indicates local take-off switch is noisy. The fault will become inactive if the
Root Cause
noise is reduced.
1. Disconnect wires from switch. Does fault go inactive? If yes, replace the switch. If no, go to step 2.
2. Complete a continuity and short circuit test of the harness from the switch connector(s) to ECU
connectors using the engine system schematic. If the continuity or short circuit check fails, isolate to
affected harness by disconnecting the airframe interface connection AF-P1. If problem is isolated to
engine airframe harness, contact Lycoming Engines. If problem is found from switch to AF-J1, repair in
accordance with aircraft maintenance manual. If the continuity check is good, replace the ECU.
© 2018 Avco Corporation. All Rights Reserved
November 2018
Fault Group 12
Troubleshooting Steps
Fault Group 12
Troubleshooting Steps
Fault Group 13
Troubleshooting Steps
Fault Group 13
Troubleshooting Steps
Fault Name -reserved-
Fault Lamp
Fault Name -reserved-
Fault Lamp
[FAULT: local takeoff reserve
Fault Name
switch stuck]
Fault Lamp
[FAULT: local takeoff reserve
Fault Name
switch noise]
Fault Lamp
NTO
NTO
FFL
FFL
Appendix D
Page 421