Lycoming TEO-540-C1A Maintenance Manual page 431

TEO-540-C1A Engine Maintenance Manual
Fault ID 11
Fault
TLB data access exception
Description
This fault indicates an invalid entry from the data translation lookup into the TLB
Root Cause (Translation Lookaside Buffer) caused by a possible hardware issue (processor, memory
corruption)
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 3. If yes, go to step 2.
2. Contact Lycoming Personnel to have the ECU reprogrammed. Is fault active or reprogram
unsuccessful? If no, go to step 3. If yes, 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.
4. If fault repeats, replace the ECU.
Fault ID 12
Fault
Debug Module Exception
Description
This fault indicates a debug exception was received from processor possibly due to a
Root Cause
hardware issue
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 3. If yes, go to step 2.
2. Contact Lycoming Personnel to have the ECU reprogrammed. Is fault active or reprogram
unsuccessful? If no, go to step 3. If yes, 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.
4. If fault repeats, replace the ECU.
Fault ID 13
Fault
GRA memory corrupt (Internal RAM)
Description
This fault indicates a corrupted General On-Chip RAM area due to a processor issue. This
Root Cause
is the On-Chip RAM excluding the shared Reset Persistent RAM area.
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 3. If yes, go to step 2.
2. Contact Lycoming Personnel to have the ECU reprogrammed. Is fault active or reprogram
unsuccessful? If no, go to step 3. If yes, 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.
4. If fault repeats, replace the ECU.
© 2018 Avco Corporation. All Rights Reserved
November 2018
Fault Group 2
Troubleshooting Steps
Fault Group 2
Troubleshooting Steps
Fault Group 2
Troubleshooting Steps
Fault Name
[FAULT: DATA TLB]
Fault Lamp
Fault Name
[FAULT: DEBUG]
Fault Lamp
Fault Name
[FAULT: GRA CORRUPT]
Fault Lamp
NTO
NTO
NTO
Appendix D
Page 401