Lycoming TEO-540-C1A Maintenance Manual page 566

Fault ID 552
Fault
CHT cyl 1 cross-check fault
Description
This fault is a cross-check between local cylinder head temperature and inferred cylinder
Root Cause
head temperature has consistently exceeded its calibrated maximum threshold
Fault ID 553
Fault
CHT cyl 2 cross-check fault
Description
This fault indicates a cross-check between local cylinder head temperature and inferred
Root Cause
cylinder head temperature has consistently exceeded its calibrated maximum threshold
Fault ID 554
Fault
CHT cyl 3 cross-check fault
Description
This fault indicates cross-check between local cylinder head temperature and inferred
Root Cause
cylinder head temperature has consistently exceeded its calibrated maximum threshold
Fault ID 555
Fault
CHT cyl 4 cross-check fault
Description
This fault indicates the cross-check of cylinder head temperature which means a cross-
Root Cause check between local cylinder head temperature and inferred cylinder head temperature has
consistently exceeded its calibrated maximum threshold
Fault ID 556
Fault
CHT cyl 5 cross-check fault
Description
This fault indicates the cross-check of cylinder head temperature which means a cross-
Root Cause check between local cylinder head temperature and inferred cylinder head temperature has
consistently exceeded its calibrated maximum threshold
Fault ID 557
Fault
CHT cyl 6 cross-check fault
Description
This fault indicates the cross-check of cylinder head temperature which means a cross-
Root Cause check between local cylinder head temperature and inferred cylinder head temperature has
consistently exceeded its calibrated maximum threshold
Fault ID 558
Fault
CHT cyl 7 cross-check fault
Description
This fault indicates the cross-check of cylinder head temperature which means a cross-
Root Cause check between local cylinder head temperature and inferred cylinder head temperature has
consistently exceeded its calibrated maximum threshold
Fault ID 559
Fault
CHT cyl 8 cross-check fault
Description
This fault indicates the cross-check of cylinder head temperature which means a cross-
Root Cause check between local cylinder head temperature and inferred cylinder head temperature has
consistently exceeded its calibrated maximum threshold
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.
Appendix D
Page 536
Fault Group 70
Fault Group 70
Fault Group 70
Fault Group 70
Fault Group 70
Fault Group 70
Fault Group 70
Fault Group 70
Troubleshooting Steps for Faults 552 thru 559
TEO-540-C1A Engine Maintenance Manual
Fault Name
[FAULT: CHT cyl 1 coss-check]
Fault Lamp
Fault Name
[FAULT: CHT cyl 2 coss-check]
Fault Lamp
Fault Name
[FAULT: CHT cyl 3 coss-check]
Fault Lamp
Fault Name
[FAULT: CHT cyl 4 coss-check]
Fault Lamp
Fault Name
[FAULT: CHT cyl 5 coss-check]
Fault Lamp
Fault Name
[FAULT: CHT cyl 6 coss-check]
Fault Lamp
Fault Name
[FAULT: CHT cyl 7 coss-check]
Fault Lamp
Fault Name
[FAULT: CHT cyl 8 coss-check]
Fault Lamp
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November 2018