Lycoming TEO-540-C1A Maintenance Manual page 536

Fault ID 392
Fault Control Priority message out-of-sync-
Description fault
This fault indicates the PWM and CAN 1 control state disagree for a period of time
Root Cause possibly due to an unexpected response from standby channel (unexpected heartbeat) or
CAN 1 failure
Fault ID 393
Fault Control Priority PWM heartbeat duty
Description cycle fault
This fault indicates remote PWM heartbeat has an invalid frequency or duty cycle possibly
Root Cause
due to an unexpected response from standby channel
Fault ID 394
Fault Remote PWM heartbeat duty cycle
Description fault
This fault indicates remote PWM heartbeat has an invalid duty cycle possibly due to an
Root Cause
unexpected response from standby channel
Fault ID 395
Fault Control Priority PWM invalid
Description frequency
This fault indicates remote PWM heartbeat has an invalid frequency possibly due to an
Root Cause
unexpected response from standby channel
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 ECU.
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 396
Fault
Description
Root Cause
Fault ID 397
Fault
Description
Root Cause
Appendix D
Page 506
Fault Group 50
Fault Group 50
Fault Group 50
Fault Group 50
Troubleshooting Steps for Faults 392 thru 395
Fault Group 50
Troubleshooting Steps
Fault Group 50
Troubleshooting Steps
TEO-540-C1A Engine Maintenance Manual
[FAULT: control priority message
Fault Name
out-of-sync]
Fault Lamp
Fault Name
[FAULT: control priority PWM]
Fault Lamp
[FAULT: remote PWM heartbeat
Fault Name
duty cycle]
Fault Lamp
[FAULT: control priority PWM
Fault Name
frequency invalid]
Fault Lamp
Fault Name
-Reserved-
Fault Lamp
Fault Name
-Reserved-
Fault Lamp
© 2018 Avco Corporation. All Rights Reserved
NTO
NTO
NTO
NTO
NTO
NTO
November 2018