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
13
Crop_this_page
04.1.58 A050 - ECU, basic control unit
A009 - Actuator unit
B014 - Sensor, hydrostatic collecting
shaft
B015 - Sensor, bevel pinion
Transmission slip monitor
Transmission output speed
deviates by more than 30%
from setpoint value
May occur at ex-
tremely low tempera-
tures in isolated
cases; repeated oc-
currence under nor-
mal conditions
causes a rise in oil
temperature and fur-
ther transmission
damage; TMS is
switched off
Fault not active if tur-
bo-clutch (TK) func-
tion is on - clutch is
depressed,
check clutch from ac-
tuator unit
TRANSMISSION, TRANS-
MISSION ADJUSTMENT
("ideal ratio/actual ratio"
comparison)
04.1.61 A050 - ECU, basic control unit
Y002 - Solenoid valve, travel range I
Faulty valve actuation, travel
range I
Circuit diagram
Sheet 6
04.1.62 A050 - ECU, basic control unit
Y003 - Solenoid valve, travel range II
Faulty valve actuation, travel
range II
Circuit diagram
Sheet 6
04.1.63 A050 - ECU, basic control unit
Y005 - Solenoid valve, speed gover-
nor
Faulty valve actuation, mech.
speed governor
Circuit diagram
Sheet 6
04.1.64 A050 - ECU, basic control unit
Y004 - Solenoid valve, turbo-clutch
Faulty solenoid valve actua-
tion, turbo-clutch
TK valve cannot be
actuated manually,
i.e. tractor must not
be driven!
Circuit diagram
Sheet 6
TRANSMISSION, TURBO-
CLUTCH
04.1.65 A050 - ECU, basic control unit
Y053 - Active hold function solenoid
valve
Faulty stationary function ac-
tuation, low side brake
Fault on earth side to
solenoid valve
Circuit diagram
Sheet 6
04.1.66 A050 - ECU, basic control unit
Y053 - Active hold function solenoid
valve
Faulty actuation of stationary
function, high side brake
Fault on + side to so-
lenoid valve
Circuit diagram
Sheet 6
04.1.67 A050 - ECU, basic control unit
Y053 - Active hold function solenoid
valve
Self-test on brake stationary
function failed
Check electrical cir-
cuit,
relay poss. incorrect
Circuit diagram
Sheet 6
Fault
code
DIN brief description Cause Consequences Reference FENDIAS/Note