Lycoming TEO-540-C1A Maintenance Manual page 481

TEO-540-C1A Engine Maintenance Manual
Fault ID 199
Fault
Description
Root Cause
Fault ID 200
Primary: ACJ Temperature Circuit Fault
Fault
Secondary: ACJ Temperature Circuit
Description
This fault occurs if the Raw voltage observed on the input is outside the expected window
defined by the calibratable Highest and Lowest Valid Raw voltage values.
This does not distinguish between Open and Short Circuit Faults as any of the following
Root Cause
failures would result in the Raw voltage outside the expected voltage window:
-
-
1. With Ignition switch in OFF position, remove ECU power by pulling the ECU circuit breaker. Wait 10s
before resetting. Is fault still active or repetitive? If yes, replace the ECU.
Fault ID 201
Primary: Thermocouple Offset Voltage
Fault
Description Secondary: Thermocouple Offset
This fault occurs if the Raw voltage observed on the input is outside the expected window
defined by the calibratable Highest and Lowest Valid Raw voltage values.
This does not distinguish between Open and Short Circuit Faults as any of the following
Root Cause
failures would result in the Raw voltage outside the expected voltage window:
-
-
1. With Ignition switch in OFF position, remove ECU power by pulling the ECU circuit breaker. Wait 10s
before resetting. Is fault still active or repetitive? If yes, replace the ECU.
Fault ID 202
Fault Primary/Secondary: ECU Temperature
Description
This fault occurs if the Raw voltage observed on the input is outside the expected window
defined by the calibratable Highest and Lowest Valid Raw voltage values.
This does not distinguish between Open and Short Circuit Faults as any of the following
Root Cause
failures would result in the Raw voltage outside the expected voltage window:
-
-
1. With Ignition switch in OFF position, remove ECU power by pulling the ECU circuit breaker. Wait 10s
before resetting. Is fault still active or repetitive? If yes, replace the ECU.
© 2018 Avco Corporation. All Rights Reserved
November 2018
Fault Group
Troubleshooting Steps
Fault Group
Fault
-
Open Circuit
-
Short to 5V
Troubleshooting Steps
Fault Group
Circuit Fault
Voltage Circuit Fault
-
Open Circuit
-
Short to 5V
Troubleshooting Steps
Fault Group
Circuit Fault
-
Open Circuit
-
Short to 5V
Troubleshooting Steps
25 Fault Name
Fault Lamp
26 Fault Name
Fault Lamp
Short to VPwr
Short to GND
26 Fault Name
Fault Lamp
Short to VPwr
Short to GND
26 Fault Name
Fault Lamp
Short to VPwr
Short to GND
-Reserved-
TLO
[FAULT: AN34 circuit]
TLO
[FAULT: AN35 circuit]
TLO
[FAULT: AN36 circuit]
TLO
Appendix D
Page 451