Lycoming TEO-540-C1A Maintenance Manual page 428

Fault ID 0
Fault
Description:
Root Cause
Fault ID 1
Loss of FMPLL (Frequency
Fault
Modulation Phase Lock Loop Lock)
Description:
Reset circuitry
Root Cause This fault indicates a hardware failure occurred during System Initialization.
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.
3. If fault repeats, replace the ECU.
Fault ID 2
Fault Loss of FMPLL clock reset
Description
Root Cause This fault indicates a failure of the FMPLL feature on the processor
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.
3. If fault repeats, replace the ECU.
Fault ID
Fault
Internal Watchdog Reset
Description
This fault indicates a disabled reset has occurred. Internal processor watchdog timer reset
Root Cause
has been disabled in the system by default.
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.
3. If fault repeats, replace the ECU.
Appendix D
Page 398
Fault Group
Troubleshooting Steps
Fault Group
Troubleshooting Steps
Fault Group
Troubleshooting Steps
3 Fault Group
Troubleshooting Steps
TEO-540-C1A Engine Maintenance Manual
1 Fault Name
Fault Lamp
1 Fault Name
Fault Lamp
1 Fault Name
Fault Lamp
1 Fault Name
Fault Lamp
© 2018 Avco Corporation. All Rights Reserved
RESERVED
N/A
[FAULT: Loss of Lock Reset]
None
[FAULT: Loss of Clock Reset]
None
[FAULT: Internal Watchdog Reset]
None
November 2018