Service Manual Instruction Manual

SECTION 6 - JLG CONTROL SYSTEM
3121171 – JLG Lift – 6-75
236 23 6 FUNCTION SWITCHES LOCKED - SELECTED BEFORE START SWITCH A boom function was selected
before engine start.
237 23 7 START SWITCH LOCKED - SELECTED BEFORE KEYSWITCH The Start Switch was closed dur-
ing power-up.
23100 23 TOWER LIFT PRESSURE SENSOR - OUT OF RANGE HIGH Pressure transducer output
more than 4.6 VDC.
Out of range high
23101 23 TOWER LIFT PRESSURE SENSOR - OUT OF RANGE LOW Pressure transducer output less
than 0.4 VDC.
Out of range low
23102 23 TOWER LIFT PRESSURE SENSOR - NOT DETECT IN G C HA NGE P re ssure do es no t chan ge b y a t
least 20 psi when tower lift is
commanded
Not detecting change
23103 23 TOWER LIFT CYLINDER - OVER PRESSURE At the conclusion of a tower lift
command that was held for at
least three seconds with the
boom not on the rest and the
pressure is greater than 2200 psi
for three seconds
Tower lift cylinder over pressure
250 25 0 <<< FUNCTION PREVENTED >>>
259 25 9 MODEL CHANGED - HYDRAULICS SUSPENDED - CYCLE EMS The model selection has been
changed.
2513 25 13 GENERATOR MOTION CUTOUT ACTIVE Driving is not possible while the
vehicle generator is running
AND is configured to prevent
drive.
2514 25 14 BOOM PREVENTED - DRIVE SELECTED Boom functions are not possible
while the vehicle is being driven
AND is configured to not allow
simultaneous drive & boom
operation.
2515 25 15 DRIVE PREVENTED - BOOM SELECTED Driving is not possible while the
vehicle above elevation AND is
configured to prevent drive
while above elevation.
2516 25 16 DRIVE PREVENTED - ABOVE ELEVATION Driving is not possible while
Boom functions are selected
AND is configured to not allow
simultaneous drive & boom
operation.
2517 25 17 DRIVE PREVENTED - TILTED & ABOVE ELEVATION Driving is not possible while the
vehicle is tilted and above eleva-
tion AND is configured to pre-
vent drive while tilted and
above elevation.
2521 25 21 JIB SWING PREVENTED - IN 1000# MODE JIB Swing is not possible while
the vehicle is in 1000 LB Mode.
2522 25 22 CAN DONGLE ATTACHED - HYDRAULICS NOT RESTRICTED CAN Dongle attached. Very lim-
ited restrictions for all hydrau-
lics systems.
Table 6-6. Diagnostic Trouble Code Chart
DTC
Flash
Code
Sequence
Fault Message Fault Description Check