Lycoming TEO-540-C1A Maintenance Manual page 557

TEO-540-C1A Engine Maintenance Manual
Fault ID 474
Fault Transmit inter-channel message
Description watchdog fault
Root Cause This fault indicates a failure to transmit inter-channel CAN messages
Fault ID 475
Fault
Potential watchdog reset fault
Description
Root Cause This fault indicates a system wide reset due to watchdog
1. With Ignition switch in OFF position, remove ECU power by pulling the ECU circuit breaker. Wait 10s
before resetting. Is fault still active? If yes, replace ECU. If no, go to step 2.
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 476
Fault Receive inter-channel message
Description watchdog fault
Root Cause This fault indicates a failure to receive inter-channel CAN messages
1. With Ignition switch in OFF position, remove ECU power by pulling the ECU circuit breaker. Wait 10s
before resetting. Is fault still active? If yes, go to step 2. If no, go to step 3.
2. Are there any other active or logged CAN 2 or CAN 3 fault? If yes, go to troubleshooting procedure for
corresponding fault. If no, 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.
Fault ID 477
Fault
Description
Root Cause
Fault ID 478
Fault
Description
Root Cause
© 2018 Avco Corporation. All Rights Reserved
November 2018
Fault Group 60
Fault Group 60
Troubleshooting Steps for Faults 474 and 475
Fault Group 60
Troubleshooting Steps
Fault Group 60
Troubleshooting Steps
Fault Group 60
Troubleshooting Steps
[FAULT: transmit inter-channel
Fault Name
message watchdog]
Fault Lamp
Fault Name
[FAULT: Potential Watchdog Reset]
Fault Lamp
[FAULT: receive inter-channel
Fault Name
message watchdog]
Fault Lamp
Fault Name -Reserved-
Fault Lamp
Fault Name -Reserved-
Fault Lamp
None
None
None
None
None
Appendix D
Page 527