JLG 4394RT Service Manual - Manual (Page 215)

SECTION 5 - JLG CONTROL SYSTEM
3121249 – JLG Lift – 5-9
5.3 FLASH CODES AND DESCRIPTIONS
Table 5-2. Fault Code Listing - Software P1.X
Fault Flash
Code
Communicated (Displayed on Analyzer) Fault Description Priority
None
No flash code is indicated for the following help messages.
They are intended to hint at a possible problem if the vehicle is
not behaving as expected.
1
FUNCTION SELECTED BUT TRIGGER SWITCH OPEN
Reported when the trigger is not closed with function selected and
joystick out of center.
RUNNING AT CUTBACK – ABOVE ELEVATION
Reported any time the machine is considered to be above eleva-
tion.
ACCESSORY FAULT Reports when CAN faults are reported by an accessory module.
FRONT LEFT LEVELING JACK AT END OF STROKE
Reported when the front left leveling jack is reported to be at the
end of stroke pressure.
FRONT RIGHT LEVELING JACK AT END OF STROKE
Reported when the front right leveling jack is reported to be at the
end of stroke pressure.
REAR LEFT LEVELING JACK AT END OF STROKE
Reported when the rear left leveling jack is reported to be at the
end of stroke pressure.
REAR RIGHT LEVELING JACK AT END OF STROKE
Reported when the rear right leveling jack is reported to be at the
end of stroke pressure.
LEVELING JACK SET PREVENTED - ECM LOST
Reported when autoleveling is not available when communication
with the ECM times-out.
GENERATOR PREVENTED - ECM LOST
Reported when generator is not available when communication
with the ECM times-out.
DRIVE PREVENTED - ECM LOST
Reported when elevated drive is not available when communica-
tion with the ECM times-out.
ELEVATION SENSOR DISAGREEMENT
Reported when elevation prox switch is closed when the 26 ft
(3394RT) or 30 ft (4394RT) voltage is reached on the elevation
angle sensor. (prevents further lift up from platform controls)
2/1
Flash code 2/1 indicates issues at power up.
2
KEYSWITCH FAULTY – PLATFORM & GROUND ACTIVE
TOGETHER
Reported when the ground module is reading both ground and
platform modes are selected by the keyswitch. The control sys-
tem defaults control to ground mode.