Lycoming TEO-540-C1A Maintenance Manual page 447

TEO-540-C1A Engine Maintenance Manual
Fault ID 80
Fault Cylinder 1 detonation sensor circuit
Description fault
Fault ID 81
Fault Cylinder 2 detonation sensor circuit
Description fault
Fault ID 82
Fault Cylinder 3 detonation sensor circuit
Description fault
Fault ID 83
Fault Cylinder 4 detonation sensor circuit
Description fault
Fault ID 84
Fault Cylinder 5 detonation sensor circuit
Description fault
Fault ID 85
Fault Cylinder 6 detonation sensor circuit
Description fault
Fault ID 86
Fault Cylinder 7 detonation sensor circuit
Description fault
Fault ID 87
Fault Cylinder 8 detonation sensor circuit
Description fault
This fault indicates that the cylinder detonation voltage is consistently outside the
Root Cause minimum and maximum threshold limits inputted in the calibration. The fault will become
inactive if the range is within the calibrated range.
1. Is the fault active? If yes, continue. If no, go to step 3. Is there more than one fault? If yes, continue.
If no, go to step 2. Are the faults occurring in the combinations shown below? If yes, go to step 5. If
no, go to step 2.
Group 1
Knock 1 (A016)
Knock 3 (A018)
2. Check the connector for the following:
a) Harness connector is securely seated to the detonation sensor connector
b) No damage to both connectors or cabling.
c) Improper/intermittent connection due to loose-fit or vibration
d) Improper/Intermittent electrical contact due to debris (such as dust, grease, oil etc.)
If a thru d check good, go to step 6.
© 2018 Avco Corporation. All Rights Reserved
November 2018
Fault Group 11
Fault Group 11
Fault Group 11
Fault Group 11
Fault Group 11
Fault Group 11
Fault Group 11
Fault Group 11
Troubleshooting Steps for Faults 80 thru 87
Group 2
Knock 2 (A015)
Knock 6 (A017)
[FAULT: Cylinder 1 detonation
Fault Name
sensor]
Fault Lamp
[FAULT: Cylinder 2 detonation
Fault Name
sensor]
Fault Lamp
[FAULT: Cylinder 3 detonation
Fault Name
sensor]
Fault Lamp
[FAULT: Cylinder 4 detonation
Fault Name
sensor]
Fault Lamp
[FAULT: Cylinder 5 detonation
Fault Name
sensor]
Fault Lamp
[FAULT: Cylinder 6 detonation
Fault Name
sensor]
Fault Lamp
[FAULT: Cylinder 7 detonation
Fault Name
sensor]
Fault Lamp
[FAULT: Cylinder 8 detonation
Fault Name
sensor]
Fault Lamp
TLO
TLO
TLO
TLO
TLO
TLO
TLO
TLO
Appendix D
Page 417