SECTION 5 - JLG CONTROL SYSTEM
3121642 – 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 elevation.
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 RIG HT LEVEL ING JAC K AT EN D O F S TRO KE
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 communication 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 system defaults control to ground
mode.
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