Lycoming TEO-540-C1A Maintenance Manual page 529

TEO-540-C1A Engine Maintenance Manual
Fault ID 360
Fault
Power Down diagnostic failure fault
Description
Root Cause This fault indicates the power remains on after a power down warning was detected.
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 2. If yes, replace the Power Box.
2. 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.
Fault ID 361
Fault
Power Down diagnostic noise fault
Description
Root Cause This fault indicates the power down diagnostic pin is noisy.
1. Is the fault active? If no, go to step 2. If yes, are there any other active or logged Power Box (APU)
faults? If yes, replace the Power Box. If no, go to step 3.
2. 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.
3. Complete a continuity test and short circuit test of the harness as shown in the table below using a multi-
meter and the engine system schematic. If the continuity check fails, contact Lycoming Engines. If the
continuity checks good, replace the Power Box. Then go to step 2.
ECU Connector
A001-P1 (PRI)
A001-P2 (SEC)
Fault ID 362
Fault
Description
Root Cause
Fault ID 363
Fault
Description
Root Cause
© 2018 Avco Corporation. All Rights Reserved
November 2018
Fault Group 46
Troubleshooting Steps
Fault Group 46
Troubleshooting Steps
Pin Power Box Connector
77 A002-P1 (PRI)
77 A002-P2 (SEC)
Fault Group 46
Troubleshooting Steps
Fault Group 46
Troubleshooting Steps
[FAULT: Power Down Diagnostic
Fault Name
Failure]
Fault Lamp
[FAULT: Power Down Diagnostic
Fault Name
Noise]
Fault Lamp
Pin
22
22
Fault Name
-Reserved-
Fault Lamp
Fault Name
-Reserved-
Fault Lamp
None
None
None
None
Appendix D
Page 499