Appendix D
© 2018 Avco Corporation. All Rights Reserved
Page 520
November 2018
TEO-540-C1A Engine Maintenance Manual
Fault ID
444
Fault Group
56
Fault Name
[FAULT: TOR lamp output failure]
Fault
Description
Take off Reserve output failure driver
fault
Fault Lamp
None
Root Cause
This fault indicates Take off reserve output failure has been consistently detected.
Troubleshooting Steps
1.
If annunciator uses an incandescent bulb, go to step 2. If annunciator uses an LED bulb, go to step 4.
2.
Replace the bulb. Does fault become inactive. If yes, go to step 3. If no, go to step 4.
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.
4.
Remove connector/wires from annunciator. Complete continuity/short circuit test on annunciator
assembly, using a multi-meter and aircraft wiring manual. If annunciator is defective, replace. If
annunciator passes tests, go to step 5.
5.
Complete a continuity test of the harness from the annunciator to the ECU connector using the engine
system schematic in Appendix B and aircraft wiring diagram manual. If the continuity check fails,
isolate to affected harness by disconnecting AF-P1. If engine airframe harness is at fault, contact
Lycoming Engines. If aircraft wiring is at fault, repair in accordance with aircraft maintenance manual.
If the continuity checks good, replace annunciator. If fault persists, replace the ECU.
Fault ID
445
Fault Group
56
Fault Name
-Reserved-
Fault
Description
Fault Lamp
None
Root Cause
Troubleshooting Steps
Fault ID
447
Fault Group
56
Fault Name
-Reserved-
Fault
Description
Fault Lamp
None
Root Cause
Troubleshooting Steps
Fault ID
448
Fault Group
56
Fault Name
-Reserved-
Fault
Description
Fault Lamp
None
Root Cause
Troubleshooting Steps