JLG 660SJ Service Manual - Manual (Page 266)

SECTION 6 - JLG CONTROL SYSTEM
6-20 – JLG Lift – 3121202
Table 6-2. Help Fault Codes, Displayed Faults, and Descriptions
Fault Flash
Code
Communicated (Displayed on
Analyzer) Fault
Description Priority
None No flash code is indicated for the following help messages. They are
intended to hint at a possible problem if the vehicle is not behaving as
expected. 1
EVERYTHING OK The “normal” help message in platform mode
GROUND MODE OK The “normal” help message in ground mode
FSW OPEN A drive or boom function has been selected but footswitch is open.
RUNNING AT CREEP –
CREEP SWITCH OPEN All function speeds are limited to creep because the creep switch is open.
RUNNING AT CREEP – TILTED
AND ABOVE ELEVATION All boom function speeds are limited to creep because the vehicle is tilted
and above elevation.
RUNNING AT CUTBACK –
ABOVE ELEVATION Drive speed is limited to “ELEVATED MAX” because the vehicle is above
elevation.
TILT SENSOR OUT OF RANGE The tilt sensor has indicated a tilt angle greater than 19 degrees for more
than 4 seconds. Not reported during 2 second power-up.
LOAD SENSOR READING
UNDER WEIGHT The load sensor is reading 20% or more under the calibrated zero point.
This fault may occur if the basket is resting on the ground. Not reported
during 2 second power-up.
1/1 Flash code 1/1 indicates a “sleep” mode.
NOT REQUIRED
2/1 Flash code 2/1 indicates problems with footswitch. 2
FSW FAULTY The two footswitch inputs have read the same state for more than one sec-
ond.
KEYSWITCH FAULTY Both platform and ground modes are selected simultaneously
2/2 Flash code 2/2 indicates problems with drive & steer selection. Except
where noted, these faults are not reported during 2 second power-up
sequence. 3
DRIVE LOCKED – JOYSTICK
MOVED BEFORE FOOT-
SWITCH Drive was selected before and during footswitch closure. Can be reported
during power-up sequence.
FSW INTERLOCK TRIPPED Footswitch was closed for seven seconds with no function selected. Can
be reported during power-up sequence.
STEER LOCKED – SELECTED
BEFORE FOOTSWITCH Steer was selected before and during footswitch closure.
STEER SWITCHES FAULTY Both steer switches are active together.
DRIVE / STEER WITH NO
QPROX This fault only occurs with inductive joysticks. It occurs if the joystick is
moved out of the neutral position with no Qprox sensors active.
D/S JOY. QPROX BAD These faults only occur with inductive joysticks. They indicate that the Q-
Prox sensor is reading above 3.18 volts.
D/S JOY. OUT OF RANGE LOW 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
triggered below 1.05 volts. If the centertap is at the low end of the range,
these faults will be triggered below 0.79 volts.