User Manual

FENDT 900 Vario COM III Faults
B
OVERALL SYSTEM/TRACTOR
Fault Code Table FENDT 900 Vario – COM III
919 .. 1001- 934 .. 1001- 922 .. 1001- 925 .. 1001- 928 .. 1001- 931 .. 1001-
0000 B T000002
Version 3
21/09/2007
42
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0A.1.X9 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 not in neutral
position when switched on
(frequent cause: valve actua-
tor mechanically jams (pilot
control or main actuator)
caused by contamination in
hydraulics area)
Valve remains deflect-
ed when engine is on;
valve locks,
Pilot pressure OFF
Circuit diagram
Sheet 8
0A.1.XA 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 deflected too
far
Valve moves to neu-
tral and locks
Circuit diagram
Sheet 8
0A.1.XB Y071 - Control valve
Y072 - Control valve
Y074 - Control valve
Y075 - Control valve
Y076 - Control valve
Y078 - Control valve
Y079 - Control valve
Y080 - Control valve
Floating position is not
reached (dto. A.1.X4)
Valve moves to neu-
tral and locks
Circuit diagram
Sheet 8
0A.1.XC Y071 - Control valve
Y072 - Control valve
Y074 - Control valve
Y075 - Control valve
Y076 - Control valve
Y078 - Control valve
Y079 - Control valve
Y080 - Control valve
Manual actuation (occurs
when a valve is deflected
from its neutral position)
All valve positions, no
function;
Valve locked,
Pilot pressure OFF
Circuit diagram
Sheet 8
Fault
code
DIN brief description Cause Consequences Reference FENDIAS/Note