Lycoming TEO-540-C1A Maintenance Manual page 537

TEO-540-C1A Engine Maintenance Manual
Fault ID 398
Fault
Description
Root Cause
Fault ID 399
Fault
Description
Root Cause
Fault ID 400
Fault
QADC calibration failure fault
Description
This fault indicates a failure to write to the flash memory potentially due to flash memory
Root Cause
corruption.
Fault ID 401
Fault
QADC Initialization fault
Description
This fault indicates QADC has failed to initialize properly potentially due to a hardware
Root Cause failure in the QADC. The fault will become inactive if the converter successfully
initializes on subsequent attempts.
Fault ID 402
Fault
QADC scan overrun fault
Description
This fault indicates QADC has failed to sample the analogue channels every 1ms
Root Cause potentially due to a hardware failure in the converter. The fault will become inactive if the
converter returns to normal function
Fault ID 403
Fault
QADC consistency fault
Description
Root Cause This fault indicates a memory corruption has affected the QADC
1. With Ignition switch in OFF position, remove ECU power by pulling the ECU circuit breaker. Wait 10s
before resetting. Is fault active? If no, go to step 3. If yes, go to step 2.
2. Contact Lycoming Engines to correct the calibration files and reflash the ECU. Is fault still active? If
no, go to step 3. If yes, replace the ECU.
3. 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.
© 2018 Avco Corporation. All Rights Reserved
November 2018
Fault Group 50
Troubleshooting Steps
Fault Group 50
Troubleshooting Steps
Fault Group 51
Fault Group 51
Fault Group 51
Fault Group 51
Troubleshooting Steps for Faults 400 thru 403
Fault Name
-Reserved-
Fault Lamp
Fault Name
-Reserved-
Fault Lamp
Fault Name
[FAULT: QADC calibration failure]
Fault Lamp
Fault Name
[FAULT: QADC Initialization]
Fault Lamp
Fault Name
[FAULT: QADC scan overrun]
Fault Lamp
Fault Name
[FAULT: Consistency QADC]
Fault Lamp
NTO
NTO
None
None
None
None
Appendix D
Page 507