Lycoming TEO-540-C1A Maintenance Manual page 471

TEO-540-C1A Engine Maintenance Manual
Fault ID 169
Fault
ECU temperature voltage slew rate
Description
Root Cause This fault indicates ECU temperature slew rate is greater than the calibrated maximum
1. With Ignition switch in OFF position, remove ECU power by pulling the ECU circuit breaker. Wait 10s
before resetting. Is fault still active or repetitive? If yes, go to step 2. If no, monitor engine operation
for the fault to repeat. If fault repeats, go to step 2.
2. Check area surrounding ECU and Power Box to ensure there is nothing that could be causing a rapid
temperature change. If something is found, correct discrepancy. If nothing is found, go to step 3.
3. If fault is still active or repetitive, but is not affecting engine operation, contact Lycoming for further
assistance. If fault affects engine operation (ie... causes other faults), replace the ECU.
Fault ID 170
Fault
Description
Root Cause
Fault ID 171
Fault
Description
Root Cause
Fault ID 172
Fault
Description
Root Cause
© 2018 Avco Corporation. All Rights Reserved
November 2018
Fault Group 22
Troubleshooting Steps
Fault Group 22
Troubleshooting Steps
Fault Group 22
Troubleshooting Steps
Fault Group 22
Troubleshooting Steps
[FAULT: ECU temperature slew
Fault Name
rate]
Fault Lamp
Fault Name
-Reserved-
Fault Lamp
Fault Name
-Reserved-
Fault Lamp
Fault Name
-Reserved-
Fault Lamp
None
None
None
None
Appendix D
Page 441