Lycoming TEO-540-C1A Maintenance Manual page 459

TEO-540-C1A Engine Maintenance Manual
Fault ID 128
Fault Cylinder head temperature 1 slew rate
Description fault
Fault ID 129
Fault Cylinder head temperature 2 slew rate
Description fault
Fault ID 130
Fault Cylinder head temperature 3 slew rate
Description fault
Fault ID 131
Fault Cylinder head temperature 4 slew rate
Description fault
Fault ID 132
Fault Cylinder head temperature 5 slew rate
Description fault
Fault ID 133
Fault Cylinder head temperature 6 slew rate
Description fault
Fault ID 134
Fault Cylinder head temperature 7 slew rate
Description fault
Fault ID 135
Fault Cylinder head temperature 8 slew rate
Description fault
This fault indicates the temperature sensor slew rate is greater than the calibrated
Root Cause
maximum.
1. Run the engine in accordance with the engine and aircraft maintenance manuals. Is the fault active? *
If yes, go to step 3. If no, go to step 2.
2. Using the FST, download active and service fault logs, then clear fault logs and monitor engine
operation for the fault to repeat.
3. Swap the sensor from the channel giving the fault with another sensor in a different cylinder, and run the
engine. Did the fault move with the sensor? If yes, replace the sensor per the "Sensor Replacement
Procedures" section in Chapter 72-70. If no, complete a continuity test of the harness from the harness
sensor connector to the ECU connector using the engine system schematic. If the continuity check fails,
isolate to affected harness by disconnecting the firewall connection, then contact Lycoming Engines. If
the continuity checks good, replace the ECU.
*NOTE: This fault could be caused by another CHT fault. If there are any other active CHT faults on the
same cylinder go to troubleshooting steps for the corresponding CHT fault.
© 2018 Avco Corporation. All Rights Reserved
November 2018
Fault Group 17
Fault Group 17
Fault Group 17
Fault Group 17
Fault Group 17
Fault Group 17
Fault Group 17
Fault Group 17
Troubleshooting Steps for Faults 128 thru 135
[FAULT: cylinder head temperature
Fault Name
cyl 1 slew rate]
Fault Lamp
[FAULT: cylinder head temperature
Fault Name
cyl 2 slew rate]
Fault Lamp
[FAULT: cylinder head temperature
Fault Name
cyl 3 slew rate]
Fault Lamp
[FAULT: cylinder head temperature
Fault Name
cyl 4 slew rate]
Fault Lamp
[FAULT: cylinder head temperature
Fault Name
cyl 5 slew rate]
Fault Lamp
[FAULT: cylinder head temperature
Fault Name
cyl 6 slew rate]
Fault Lamp
[FAULT: cylinder head temperature
Fault Name
cyl 7 slew rate]
Fault Lamp
[FAULT: cylinder head temperature
Fault Name
cyl 8 slew rate]
Fault Lamp
None
None
None
None
None
None
None
None
Appendix D
Page 429