User Manual

FENDT 900 Vario COM III Faults
B
OVERALL SYSTEM/TRACTOR
Fault Code Table FENDT 900 Vario – COM III
Service Training
919 .. 1001- 934 .. 1001- 922 .. 1001- 925 .. 1001- 928 .. 1001- 931 .. 1001-
0000 B T000002
Version 3
21/09/2007
41
Crop_this_page
0A.1.X5 Y071 - Control valve
Y072 - Control valve
Y074 - Control valve
Y075 - Control valve
Y076 - Control valve
Y078 - Control valve
Y079 - Control valve
Y080 - Control valve
High overvoltage (> 45V) Valve moves to neu-
tral and locks
Circuit diagram
Sheet 8
0A.1.X6 Y071 - Control valve
Y072 - Control valve
Y074 - Control valve
Y075 - Control valve
Y076 - Control valve
Y078 - Control valve
Y079 - Control valve
Y080 - Control valve
Final stage error (pilot control
solenoid valve)
Valve moves to neu-
tral and locks
Circuit diagram
Sheet 8
0A.1.X7 Y071 - Control valve
Y072 - Control valve
Y074 - Control valve
Y075 - Control valve
Y076 - Control valve
Y078 - Control valve
Y079 - Control valve
Y080 - Control valve
Position pickup sensor error Valve moves to neu-
tral and locks
Circuit diagram
Sheet 8
0A.1.X8 Y071 - Control valve
Y072 - Control valve
Y074 - Control valve
Y075 - Control valve
Y076 - Control valve
Y078 - Control valve
Y079 - Control valve
Y080 - Control valve
Valve actuator does not return
to neutral position (frequent
cause: valve actuator mechan-
ically jams (pilot control or
main actuator) caused by con-
tamination in hydraulics area)
Valve remains deflect-
ed when engine is on;
valve locks,
Pilot pressure OFF
Circuit diagram
Sheet 8
Fault
code
DIN brief description Cause Consequences Reference FENDIAS/Note