JLG 660SJ Service And Maintenance Manual page 268

SECTION 6 - JLG CONTROL SYSTEM
Fault Flash Communicated (Displayed on
Code Analyzer) Fault
None
EVERYTHING OK
GROUND MODE OK
FSW OPEN
RUNNING AT CREEP – CREEP
SWITCH OPEN
RUNNING AT CREEP – TILTED
AND ABOVE ELEVATION
RUNNING AT CUTBACK – ABOVE
ELEVATION
TILT SENSOR OUT OF RANGE
LOAD SENSOR READING UNDER
WEIGHT
1/1
2/1
FSW FAULTY
KEYSWITCH FAULTY
2/2
DRIVE LOCKED – JOYSTICK
MOVED BEFORE FOOTSWITCH
FSW INTERLOCK TRIPPED
STEER LOCKED – SELECTED
BEFORE FOOTSWITCH
STEER SWITCHES FAULTY
DRIVE / STEER WITH NO QPROX
D/S JOY. QPROX BAD
D/S JOY. OUT OF RANGE LOW
6-18
Table 6-3. Help Fault Codes, Displayed Faults, and Descriptions
No flash code is indicated for the following help messages. They are intended to
hint at a possible problem if vehicle is not behaving as expected.
The "normal" help message in platform mode
The "normal" help message in ground mode
A drive or boom function has been selected but footswitch is open.
All function speeds are limited to creep because creep switch is open.
All boom function speeds are limited to creep because vehicle is tilted and
above elevation.
Drive speed is limited to "ELEVATED MAX" because vehicle is above elevation.
The tilt sensor has indicated a tilt angle greater than 19 degrees for more than 4
seconds. Not reported during 2 second power-up.
The load sensor is reading 20% or more under the calibrated zero point. This
fault may occur if platform is resting on the ground. Not reported during 2 sec-
ond power-up.
Flash code 1/1 indicates a "sleep" mode.
NOT REQUIRED
Flash code 2/1 indicates problems with footswitch.
The two footswitch inputs have read the same state for more than one second.
Both platform and ground modes are selected simultaneously
Flash code 2/2 indicates problems with drive & steer selection. Except where
noted, these faults are not reported during 2 second power-up sequence.
Drive was selected before and during footswitch closure. Can be reported dur-
ing power-up sequence.
Footswitch was closed for seven seconds with no function selected. Can be
reported during power-up sequence.
Steer was selected before and during footswitch closure.
Both steer switches are active together.
This fault only occurs with inductive joysticks. It occurs if the joystick is moved
out of the neutral position with no Qprox sensors active.
These faults only occur with inductive joysticks. They indicate that the Q-Prox
sensor is reading above 3.18 volts.
Resistive joysticks: These faults do not occur.
Inductive joysticks: The trigger points for these faults are dependent on the
centertap voltage reading. These faults will be triggered when the voltage is
less than the centertap voltage minus half the center tap voltage minus 0.3
volts. If the centertap is at the high end of the range, these faults will be trig-
gered below 1.05 volts. If the centertap is at the low end of the range, these
faults will be triggered below 0.79 volts.
– JLG Lift –
Description Priority
1
2
3
3121298