JLG 450A series II Service And Maintenance Manual page 352

SECTION 6 - JLG CONTROL SYSTEM
Flash Code Fault Displayed on Analyzer
2/2 D/S JOY. CENTER TAP BAD
(Continued)
WAITING FOR FSW TO BE OPEN
FOOTSWITCH SELECTED BEFORE
START
2/3
LIFT/SWING LOCKED – JOYSTICK
MOVED BEFORE FOOTSWITCH
PUMP SWITCHES FAULTY – CHECK
DIAGNOSTICS/BOOM
PUMP SWITCHES LOCKED –
SELECTED BEFORE FOOTSWITCH
PUMP SWITCHES LOCKED –
SELECTED BEFORE AUX POWER
l/S JOY. OUT OF RANGE LOW
l/S JOY. OUT OF RANGE HIGH
l/S JOY. CENTERTAP BAD
PUMP SWITCHES LOCKED –
SELECTED BEFORE START SWITCH
FOOTSWITCH SELECTED BEFORE
START
2/4
2/5
BOOM PREVENTED – DRIVE
SELECTED
DRIVE PREVENTED – ABOVE ELEVA-
TION
DRIVE PREVENTED – BOOM
SELECTED
DRIVE PREVENTED – TILTED &
ABOVE ELEVATION
JIB SWING PREVENTED – IN 1000#
MODE
CAN DONGLE ATTACHED –
HYDRAULICS NOT RESTRICTED
MODEL CHANGED – HYDRAULICS
SUSPENDED – CYCLE EMS
BACKUP BLAM COMMUNICATIONS
ACTIVE
6-42
Table 6-6. Help Fault Codes, Displayed Faults, and Descriptions
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.
Footswitch closed when platform mode was selected. Can be
reported during power-up sequence.
User attempted to start machine with footswitch engaged.
Flash code 2/3 indicates problems with boom function selec-
tion.
Platform upper lift or swing was selected before and during foot-
switch closure.
A boom function (lower lift, telescope, basket level, basket rotate,
jib) has both directions selected together.
A platform boom function (lower lift, telescope, basket level, basket
rotate, jib) was selected before key switch or footswitch closure.
A ground boom function (lower lift, telescope, basket level, basket
rotate, jib) was selected before aux power.
Resistive joysticks: These faults do not occur.
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.
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.
Hydraulic function switch closed before start switch closed.
User attempted to start machine with footswitch engaged.
Flash code 2/4 indicates steering digital inputs are faulty.
NOT REQUIRED
Flash code 2/5 indicates a function is prevented due to a cutout.
A boom function is selected while a drive function is selected and
drive cutout is configured to prevent simultaneous drive & boom
operation.
Drive is selected while above elevation and drive cutout is config-
ured to prevent drive.
Drive is selected while a boom function is selected and drive cutout
is configured to prevent simultaneous drive & boom operation.
Drive is selected while tilted and above elevation and tilt is config-
ured to cutout drive.
User is trying to jib swing in 1000# mode, which is not allowed.
System allows user to operate all hydraulics with very limited restric-
tions.
User changed model number using analyzer. User must cycle power
before hydraulics system will be active again.
Serial backup communications link to BLAM module is active
– JLG Lift –
Description Priority
3
4
11
3121290