JLG M600 Service Manual User Manual
Page 182
SECTION 6 - JLG CONTROL SYSTEM
6-16
– JLG Lift –
3121813
2/2
Flash code 2/2 indicates problems with drive & steer selection.
DRIVE JOYSTICK FAULTY
The drive joystick center tap is out of valid range, or the wiper is wire-off.
DRIVE LOCKED - JOYSTICK MOVED BEFORE EMS/FSW
Drive was selected before and during footswitch closure or at EMS switch-on.
FSW INTERLOCK TRIPPED
Footswitch was closed for seven seconds with no function selected.
STEER LOCKED - SELECTED BEFORE EMS/FSW
Steer was selected before and during footswitch closure or at EMS switch-on.
STEER SWITCHES FAULTY
Both steer switches are active together.
WAITING FOR FSW TO BE OPEN
Footswitch was closed when platform mode was selected.
4WD ASSIST DISABLED-NOT AVAILABLE WITH BOOM
4WD Assist has been selected and is not available due to a boom function being operated at the same time.
JOYSTICK FAULTS - CHECK PLATFORM BOX WIRING
There are drive, lift, or swing joystick faults but the exact cause cannot be determined (a short-circuit of any one joystick or the pump
pot could cause this).
2/3
Flash code 2/3 indicates problems with boom function selection.
LIFT/SWING JOYSTICK FAULTY
The lift or swing joystick center tap is out of valid range, or the wiper is wire-off.
LIFT/SWING LOCKED - JOYSTICK MOVED BEFORE EMS/FSW
Platform upper lift or swing was selected before and during footswitch closure.
PUMP POT FAULTY
The pump pot is open-circuit; all platform boom functions except upper lift & swing will run at creep.
PUMP SWITCHES FAULTY - CHECK DIAGNOSTICS/BOOM
A boom function (telescope, basket level, basket rotate, jib) has both directions selected together.
PUMP SWITCHES LOCKED - SELECTED BEFORE EMS/FSW
A boom function (telescope, basket level, basket rotate, jib) was selected before keyswitch or footswitch closure.
PUMP SWITCHED LOCKED - SELECTED BEFORE EMS
A ground boom function (telescope, basket level, basket rotate, jib) was selected before keyswitch.
SWING/LIFT JOYSTICK FAULTY
The swing joystick center tap is out of valid range, or the wiper is wire-off.
Table 6-5. Help Descriptions and Fault Flash Codes