Symptom
KCP FAIL
GPS 1 FAIL
GPS 2 FAIL
VLOC 1 FAIL
VLOC 2 FAIL
VLOC 3 FAIL
UAT FAIL
AHRS AIDED SECONDARY
MODE
AHRS AIDED SECONDARY
MODE NOT AVAILABLE
89000109-002
Rev 2
© Honeywell International Inc. Do not copy without express permission of Honeywell.
For Use in Non-Certified Aircraft
Table 8-6 Alerts Troubleshooting Chart
Causes
KCP 100EXP Failed to Respond
Checksum Failed
Values Echoed Back Does Not
Match The Transmitted Values
See "No Navigation Data or Failure" troubleshooting procedure in
Table 8-1 xVue Touch System Troubleshooting Chart
See "No Navigation Data or Failure" troubleshooting procedure in
Table 8-1 xVue Touch System Troubleshooting Chart
Loss of Communication with UAT
Improper Configuration Setup
UAT Not Functioning Properly
ADAHRS is in airspeed aiding only
mode
Airspeed not available
Corrective Action
• Check KCP 100EXP Current
Draw
• Check Wiring from KCP 100EXP
to KSD 100EXP
• If fault persists, replace KCP
100EXP
Replace KCP 100EXP
Replace KCP 100EXP
Check Wiring from UAT to KSD
100EXP
Check data port configuration
setting of the UAT
• Reset UAT
• Check function of UAT
If observed before takeoff, do not
take off in IMC/IFR until the
message clears
Note: This message is
accompanied by the Cross Check
Attitude caution alert in flight.
• Reset KG 71EXP. Inspect pitot
and static system blockage or
leaks
• If fault persists, replace KG
71EXP
xVue Touch Installation Manual
Page 8-20
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