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
40
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0A.1.X1 Y071 - Control valve
Y072 - Control valve
Y074 - Control valve
Y075 - Control valve
Y076 - Control valve
Y078 - Control valve
Y079 - Control valve
Y080 - Control valve
EEPROM inconsistent Valve moves to neu-
tral and locks
Circuit diagram
Sheet 8
0A.1.X2 Y071 - Control valve
Y072 - Control valve
Y074 - Control valve
Y075 - Control valve
Y076 - Control valve
Y078 - Control valve
Y079 - Control valve
Y080 - Control valve
Undervoltage (where U < 8V) Valve moves to neu-
tral and locks
Circuit diagram
Sheet 8
0A.1.X3 Y071 - Control valve
Y072 - Control valve
Y074 - Control valve
Y075 - Control valve
Y076 - Control valve
Y078 - Control valve
Y079 - Control valve
Y080 - Control valve
Overvoltage, safe (where U >
18 V)
Valve moves to neu-
tral and locks
Circuit diagram
Sheet 8
0A.1.X4 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 falls short (fre-
quent cause: brief control
pressure dips or oil too vis-
cous at very low tempera-
tures)
Valve moves to neu-
tral and locks
Circuit diagram
Sheet 8
Fault
code
DIN brief description Cause Consequences Reference FENDIAS/Note