JLG 450A_AJ Series II Service Manual - Manual (Page 396)

SECTION 6 - JLG CONTROL SYSTEM
6-60 – JLG Lift – 3121180
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 selected before and during footswitch closure. Can be reported during
power-up sequence.
FSW INTERLOCK TRIPPED Footswitch 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 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 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 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 fault may be indicated.
WAITING FOR FSW TO BE OPEN Footswitch closed when platform mode was selected. Can be reported during
power-up sequence.
FOOTSWITCH SELECTED BEFORE
START User attempted to start machine with 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 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 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 fault may be indicated.
PUMP SWITCHES LOCKED –
SELECTED BEFORE START SWITCH Hydraulic function switch closed before start switch closed.
FOOTSWITCH SELECTED BEFORE
START User attempted to start machine with footswitch engaged.
2/4 Flash code 2/4 indicates steering digital inputs are faulty.
NOT REQUIRED
Table 6-8. Help Fault Codes, Displayed Faults, and Descriptions - S/N 0300066949 & S/N 1300000001 to Present
Fault Flash
Code
Communicated (Displayed on
Analyzer) Fault
Description Priority