JLG 460SJ Service Manual - Manual (Page 341)

SECTION 6 - JLG CONTROL SYSTEM (S/N 61718 TO PRESENT)
3120895 – JLG Lift – 6-25
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 FOOTSWITCH Drive was selected before and during footswitch closure. Can be reported dur-
ing 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 at the same time.
D/S JOY. OUT OF RANGE LOW Resistive joysticks: These faults do not occur.
D/S JOY. OUT OF RANGE LOW Resistive joysticks: These faults do not occur.
D/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 tolerance or a short to
battery has occurred.
D/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.
WAITING FOR FSW TO BE OPEN Footswitch was closed when platform mode was selected. Can be reported
during power-up sequence.
FOOTSWITCH SELECTED BEFORE
START The user attempted to start the machine with the
footswitch engaged.
2/3 Flash code 2/3 indicates problems with boom function selection. 3
LIFT/SWING LOCKED — JOYSTICK
MOVED BEFORE FOOTSWITCH Platform upper lift or swing was selected before and during footswitch 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 tolerance 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 6-3. Help Fault Codes, Displayed Faults, and Descriptions - S/N 66995 to Present
Fault Flash
Code
Communicated (Displayed on
Analyzer) Fault
Description Priority