Lycoming TEO-540-C1A Maintenance Manual page 482

Fault ID 203
Primary/Secondary: Power Box
Fault
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 204
Primary/Secondary: Power Box
Fault
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 205
Fault Primary/Secondary: Actuator Supply
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 Power Box.
Fault ID 206
Fault
Description
Root Cause
Appendix D
Page 452
Fault Group
Temperature
Circuit Fault
-
Open Circuit
-
Short to 5V
Troubleshooting Steps
Fault Group
Temperature
Circuit Fault
-
Open Circuit
-
Short to 5V
Troubleshooting Steps
Fault Group
Voltage Monitor Circuit Fault
-
Open Circuit
-
Short to 5V
Troubleshooting Steps
Fault Group
Troubleshooting Steps
TEO-540-C1A Engine Maintenance Manual
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
26 Fault Name
Fault Lamp
© 2018 Avco Corporation. All Rights Reserved
[FAULT: AN39 circuit]
TLO
[FAULT: AN37 circuit]
TLO
[FAULT: AN38 circuit]
TLO
-Reserved-
TLO
November 2018