Lycoming TEO-540-C1A Maintenance Manual page 457

TEO-540-C1A Engine Maintenance Manual
Fault ID 118
Fault CAN configuration Protocol message
Description watchdog fault
This fault indicates a communication failure of CAN configuration protocol interface. The
Root Cause
fault will become inactive communication resumes
1. Is the fault intermittent? If yes, see note. If no, go to step 2.
2. With Ignition switch in OFF position, remove ECU power by pulling the ECU circuit breaker. Wait 10s
before resetting. Is fault still active? If no, go to step 3. If yes, replace the ECU, then go to step 3.
3. Using the FST, download active and service fault logs, then clear fault logs and monitor engine
operation for the fault to repeat.
*NOTE: This fault can be caused by too much data being requested from the ECU than the controller can
provide through CAN 2 and CAN 3. This fault doesn't cause any operational or performance issues
and is considered low risk.
Fault ID 119
Fault
Description
Root Cause
Fault ID 120
Fault
Channel Identifier Discrepancy Fault
Description
This fault indicates that ECU channel ID was conflicted between the GPIO (General
Purpose Input Output) channel ID pin, Unit Factory Calibration and the Application
Root Cause
Software program version possibly due a wrong software load, corrupted memory and or
hardware issues.
1. Contact Lycoming Personnel to have the ECU reprogrammed.
2. Clear service fault codes. Start the engine. Is the fault still active? If yes, replace the ECU.
Fault ID 121
Fault
Description
Root Cause
© 2018 Avco Corporation. All Rights Reserved
November 2018
Fault Group 15
Troubleshooting Steps
Fault Group 15
Troubleshooting Steps
Fault Group 16
Troubleshooting Steps
Fault Group 16
Troubleshooting Steps
Fault Name
[FAULT: CCP message watchdog]
Fault Lamp
Fault Name
-Reserved-
Fault Lamp
Fault Name
[FAULT: channel ID discrepancy]
Fault Lamp
Fault Name
-Reserved-
Fault Lamp
None
NTO
NTO
Appendix D
Page 427