Lycoming TEO-540-C1A Maintenance Manual page 454

Fault ID 106
Fault
PFT out of sequence
Description
This fault indicates that the PFT test state is not at the correct state based on an internal
Root Cause timer possibly due to a failed test case or timed out during PFT. The fault will be cleared
once the PFT passes.
1. If PFT failed, push PFT switch again to acknowledge a failed test and reset the PFT state
2. Initiate PFT using the PFT switch and ensure PFT pass condition is achieved
3. If PFT failed twice in a row, contact Lycoming for further troubleshooting guidance.
Fault ID 107
Fault
PFT test switch discrepancy fault
Description
This fault indicates that the primary and secondary channel's pre-flight test switch differ
possibly due to a hardware switch issue. The fault will become inactive if both test
Root Cause
switches change and agree with each other.
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 108
Fault
Description
Root Cause
Fault ID 109
Fault
Description
Root Cause
Fault ID 110
Fault
Description
Root Cause
Appendix D
Page 424
Fault Group 14
Troubleshooting Steps
Fault Group 14
Troubleshooting Steps
Fault Group 14
Troubleshooting Steps
Fault Group 14
Troubleshooting Steps
Fault Group 14
Troubleshooting Steps
TEO-540-C1A Engine Maintenance Manual
Fault Name
[FAULT: PFT out of sequence]
Fault Lamp
[FAULT: pre-flight test switch
Fault Name
discrepancy]
Fault Lamp
Fault Name
-Reserved-
Fault Lamp
Fault Name
-Reserved-
Fault Lamp
Fault Name
-Reserved-
Fault Lamp
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November 2018