JLG E450A, Service And Maintenance Manual

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SECTION 6 - JLG CONTROL SYSTEM
6-36 3121714
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/FWS
Drive was selected before and during footswitch closure.
FWS INTERLOCK TRIPPED
Footswitch was closed for seven seconds with no function selected.
STEER LOCKED - SELECTED BEFORE EMS/FWS
Steer was selected before and during footswitch closure.
STEER SWITCHES FAULTY
Both steer switches are active together.
WAITING FOR FWS TO BE OPEN
Footswitch was closed when platform mode was selected.
JOYSTICK FAULTS - CHECK PLATFORM BOX WIRING
More than one of the drive, lift and swing joystick center tap or wiper voltages is out of range.
This is probably due to a short-circuit across a joystick port.
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/FWS
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 (lower lift, telescope, basket level, basket rotate, jib) has both directions selected together.
PUMP SWITCHES LOCKED - SELECTED BEFORE EMS/FWS
A boom function (lower lift, telescope, basket level, basket rotate, jib) was selected before and during footswitch
closure.
PUMP SWITCHED LOCKED - SELECTED BEFORE EMS
A ground boom function (lower lift, 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.
2/5
Flash code 2/5 indicates that a function is prevented due to a cutout.
BOOM PREVENTED - DRIVE SELECTED
A boom function is selected while a drive function is selected and drive cutout is configured to prevent simultane-
ous drive & boom operation.
BOOM PREVENTED - FUNCTION CUTOUT ACTIVE
A boom function is selected while function cutout is active and configured to cutout boom functions.
DRIVE & BOOM PREVENTED - FUNCTION CUTOUT ACTIVE
Drive or a boom function is selected while function cutout is active and configured to cutout all functions.
DRIVE PREVENTED - ABOVE ELEVATION
Drive is selected while above elevation and drive cutout is configured to prevent drive.
DRIVE PREVENTED - BOOM MOVEMENT SELECTED
Drive is selected while a boom function is selected and drive cutout is configured to prevent simultaneous drive &
boom operation.
DRIVE PREVENTED - CHARGER CONNECTED
Drive is selected while the charger is on (indicated by drive cutout being active) and drive cutout is configured to
prevent drive.
DRIVE PREVENTED - TILTED AND ABOVE ELEVATION
Drive is selected while drive cutout is active and drive cutout is configured to prevent drive.
Table 6-8. Help Descriptions and Fault Flash Codes