Lycoming TEO-540-C1A Maintenance Manual page 546

Fault ID 432
Fault Fuel filter pressure drop limit
Description 2exceeded Fault
This fault indicates the fuel filter drop pressure drop has consistently exceeded its
Root Cause maximum allowable threshold. This also indicates a severe restricted flow between the fuel
pump outlet pressure and fuel rail pressure
1. Run the engine in accordance with the engine and aircraft maintenance manuals. Is the fault active? If
yes, go to step 2. If no, go to step 4.
2. Are there any active or logged fuel pressure or MAP sensor faults? If yes, go to troubleshooting
procedure for related fault. If no, go to step 3.
3. Remove engine fuel filter and clean in accordance with Chapter 73-10 of this manual. Reinstall filter,
run the engine in accordance with the engine and aircraft maintenance manuals. Is the fault active?
If yes, replace the filter. If no, go to step 4.
4. 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.
Fault ID 433
Fault TLO timer expired
Description
This fault indicates the time limited operation timer has expired after a calibrated amount
Root Cause
of time
1. Are there any active TLO faults? If yes, correct faults using troubleshooting procedure for that fault(s),
then go to step 2. If no, go to step 2.
2. Contact Lycoming Engines to reset the TLO* timer. Go to step 3.
3. Set ignition switch to on, do not start engine, then 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.
*NOTE: It is NORMAL for the TLO time remaining discrepancy fault (Fault 329) to occur when the
Primary and Secondary TLO timers are reset. These faults should clear in step 3 of this procedure.
Fault ID 434
Fault
Description
Root Cause
Appendix D
Page 516
Fault Group 55
Troubleshooting Steps
Fault Group 55
Troubleshooting Steps
Fault Group 55
Troubleshooting Steps
TEO-540-C1A Engine Maintenance Manual
[FAULT: fuel filter pressure drop
Fault Name
exceeded_2]
Fault Lamp
Fault Name
[FAULT: TLO time expired]
Fault Lamp
Fault Name -Reserved-
Fault Lamp
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November 2018