Lycoming TEO-540-C1A Maintenance Manual page 484

3. Inspect the sensor, sensor lead and connector. If there is damage found, replace the sensor per the "Sensor
Replacement Procedure" in Chapter 72-70 . If there is no damage, go to step 4.
4. Inspect engine harness for visible signs of damage. If damage is found, contact Lycoming Engines. If no
damage is found, go to step 5.
5. Swap the sensor from the channel giving the fault with another sensor in a different position and run the
engine. Did the fault move with the sensor? If yes, replace the sensor per the "Sensor Replacement
Procedure" in Chapter 72-70 . If no, complete a continuity test of the harness from the harness sensor
connector to the ECU connector using the engine system schematic. If the continuity check fails, isolate to
affected harness by disconnecting the firewall connection, then contact Lycoming Engines. If the continuity
checks good, replace the ECU.
6. If the above steps are unsuccessful, contact Lycoming.
Fault ID 216
Fault Primary: EGT2 External Reference Fault
Description Secondary: -reserved-
Fault ID 217
Fault Primary: EGT2 External Reference Fault
Description Secondary: -reserved-
Fault ID 218
Fault Primary: EGT2 External Reference Fault
Description Secondary: -reserved-
Fault ID 219
Fault Primary: EGT2 External Reference Fault
Description Secondary: -reserved-
Fault ID 220
Fault Primary -reserved-
Description Secondary EGT1 External Reference Fault
Fault ID 221
Fault Primary -reserved-
Description Secondary EGT3 External Reference Fault
Fault ID 222
Fault Primary -reserved-
Description Secondary EGT5 External Reference Fault
Fault ID 223
Fault Primary -reserved-
Description Secondary EGT7 External Reference Fault
Root Cause This fault occurs if there is a loss of the ACJ (Auto Cold Junction) in the ECU.
1. Is the fault active? If no, go to step 2. If yes, are there any other ACJ faults? If yes, go to
troubleshooting procedure for corresponding fault. If no, replace the ECU. Then go to step 2.
2. Using the FST, download active and service fault logs, then clear fault logs and monitor engine operation
for the fault to repeat.
Appendix D
Page 454
Troubleshooting Steps for Faults 208 thru 215 (Cont.)
Fault Group
Fault Group
Fault Group
Fault Group
Fault Group
Fault Group
Fault Group
Fault Group
Troubleshooting Steps
TEO-540-C1A Engine Maintenance Manual
28 Fault Name
Fault Lamp
28 Fault Name
Fault Lamp
28 Fault Name
Fault Lamp
28 Fault Name
Fault Lamp
28 Fault Name
Fault Lamp
28 Fault Name
Fault Lamp
28 Fault Name
Fault Lamp
28 Fault Name
Fault Lamp
© 2018 Avco Corporation. All Rights Reserved
[FAULT EGT 2 External
Supply Fault]
None
[FAULT EGT 4 External
Supply Fault]
None
[FAULT EGT 6 External
Supply Fault]
None
[FAULT EGT 8 External
Supply Fault]
None
[FAULT EGT 1 External
Supply Fault]
None
[FAULT EGT 3 External
Supply Fault]
None
[FAULT EGT 5 External
Supply Fault]
None
[FAULT EGT 7 External
Supply Fault]
None
November 2018