Fault Diagnostics; Problems And Possible Remedial Action - FENDT varioguide Operator's Manual

8.1 Fault diagnostics

8.1.1 Problems and possible remedial action

Fault
The following appears:
Automatic way-line
guidance is not
possible or has been
terminated.
The automatic steering
system is engaged but
automatic way-line
guidance does not
drive straight along the
way-line.
VarioGuide
438.020.070.012
Possible cause:
The steering wheel has
been turned by the
operator.
Electrohydraulic steering
(EHL) has not been pre-
activated.
Road speed is not
between
0.1 km/h and 25 km/h.
No valid way-line has
been created.
GNSS positioning is not
accurate enough.
The automatic steering
system was switched on
when the tractor was too
far from the required
way-line.
The automatic steering
was switched on with
too great a deviation
from the required travel
direction.
The steering angle
sensor is supplying a
faulty signal.
The steering angle
sensor has mechanical or
electrical tolerances.
Indication
No lines are displayed in
map view on the
terminal.
The signal strength
display shows fewer
than three bars.
The distance from the
required way line is
greater than 10 m.
The approach angle to
the required way-line is
greater than 75°.
Fault codes in instrument
panel.
8. Faults and remedy
Remedy
Press button (K) on multi-
function armrest (MFA).
Adjust the road speed.
Create new way-line.
Drive away from the
shadowing and do not
start way-line guidance
until at least three bars
are displayed.
Drive the tractor closer
to the required way-line
before activating way-
line guidance.
Decrease the approach
angle to the required
way-line.
Calibrate steering angle
sensor (2401), see
chapter 6.1.1
Calibrate
steering angle sensor
and steering valve, page
55
Calibrate steering angle
sensor (2401), see
chapter 6.1.1
Calibrate
steering angle sensor
and steering valve, page
55
Contact your FENDT
dealer.
145