JLG 510AJ Service Manual - Manual (Page 351)

SECTION 6 - JLG CONTROL SYSTEM
3121181 – JLG Lift – 6-69
2/3 Flash code 2/3 indicates problems with boom function selec-
tion. 3
LIFT/SWING LOCKED – JOYSTICK
MOVED BEFORE FOOTSWITCH Platform upper lift or swing was selected before and during foot-
switch closure.
PUMP SWITCHES FAULTY – CHECK
DIAGNOSTICS/BOOM A boom function (lower lift, telescope, basket level, basket rotate,
jib) has both directions selected together.
PUMP SWITCHES LOCKED – SELECTED
BEFORE FOOTSWITCH A platform boom function (lower lift, telescope, basket level, basket
rotate, jib) was selected before key switch or footswitch closure.
PUMP SWITCHES LOCKED – SELECTED
BEFORE AUX POWER A ground boom function (lower lift, telescope, basket level, basket
rotate, jib) was selected before aux power.
l/s joy. out of range low Resistive joysticks: These faults do not occur.
l/s joy. out of range high Resistive joysticks: These faults do not occur if the Vref voltage is
below 8.1 volts. If Vref is above 7.7 volts, Vref is operating out of toler-
ance or a short to battery has occurred.
l/s joy. center tap bad Resistive joysticks: These faults occur when the center tap voltage is
not between 3.08 volts and 3.83 volts. Due to resistor tolerances
there is a +/-.1 volt range around these values where the fault may be
indicated.
PUMP SWITCHES LOCKED – SELECTED
BEFORE START SWITCH This fault occurs when a hydraulic function switch is closed before
the start switch is closed.
FOOTSWITCH SELECTED BEFORE START The user attempted to start the machine with the footswitch
engaged.
2/4 Flash code 2/4 indicates that steering digital inputs are faulty.
NOT REQUIRED
Table 6-9. Help Fault Codes, Displayed Faults, and Descriptions
Fault Flash
Code
Analyzer Display Description Priority