SECTION 5 - JLG CONTROL SYSTEM
3121166 – JLG Lift – 5-13
Help messages with the 2-5 flash code indicate that a function is prevented due to a cutout.
2 5 E LEV ANGLE SENSOR FAULTY – NOT MOUNTED
OR VOLTAGE OUT OR RANGE
The input voltage from the sensor that measures lower arm
motion is outside acceptable range. This may be caused by
improper sensor mounting, difficulty with the sensor wiring,
or a faulty sensor.
The elevation sensor is unhealthy
Platform height assumed to be full elevation.
Check mounting, review sen-
sor wiring against the electri-
cal schematic, or replace the
sensor to clear the message.
2 5 ELEV ANGLE SENSOR HAS NOT BEEN CALI-
BRATED
The Elevation Sensor’s Calibration EEPROM is set to the
signature implanted by the In-Circuit Test Fixture. Retained
until Calibration EEPROM is over-written by a valid calibra-
tion.
Platform Height assumed to be Full Elevation.
The Elevation Proximity Switch is Open to indicate that the
Platform is Elevated, but the Elevation Sensor’s Voltage
indicates that the Platform is Stowed. To be conservative,
the control system will assume that the Platform is Ele-
vated.
Elevation Sensor is “Healthy” AND
the Elevation Sensor’s
Zeroed Voltage is < 0.04V AND
the Elevation Prox Switch
is Open for 2000mS. Retained until situation changes.
Calibrate the elevation angle
sensor using the calibration
procedure to clear the mes-
sage.
2 5 DRIVE PREVENTED – CHARGER CONNECTED Driving is not possible since the vehicle is charging and it is
configured to only allow lifting.
In Platform Mode, the Battery Charger is Charging AND the
Drive / Lift Select Toggle is set to Lift AND Machine Setup’s
CHARGE INTERLOC is set to 0=DRIVE ONLY.
Drive & Steer Prevented
Disconnect battery charger
2 5 DRIVE & LIFT UP PREVENTED – CHARGER CON-
NECTED
Driving and lifting are not possible since the vehicle is
charging and it is configured to prevent all motion.
In Platform Mode, the Battery Charger is Charging AND
the
Drive / Lift Select Toggle is set to Lift AND Machine Setup’s
CHARGE INTERLOC is set to 1=DRV & LIFT UP.
Drive & Lift Up Prevented.
Disconnect battery charger
2 5 PLATFORM OVERLOADED While the Load Sensing System is enabled, the platform
load measured by the Load Sensing System is excessive.
Functions from platform control are prevented, and func-
tions from ground control may be prevented, depending on
machine configuration.
The Load Sensing System Functionality’s Overload is True
AND
[Machine Setup’s LOAD is set to 1=CUTOUT PLT OR
2=CUTOUT ALL].
Drive, Steer, & Lift Prevented (except 3246ES CE, Indoor
Mode, Height >24 Ft and < 26Ft, Lift Dn allowed).
Remove excess weight from
platform.
2 5 DRIVE PREVENTED – POTHOLE NOT ENGAGED While elevated, driving is not possible since the control sys-
tem detected that the pot-hole protection mechanism failed
to deploy.
In Platform Mode with a Healthy Elevation Sensor, the Ele-
vation Sensor Voltage > 0.15V AND Pot-Hole Protection’s
PHP Switches detect Up.
In Platform Mode with an Unhealthy Elevation Sensor, the
Elevation Prox Sensor is Open (no Arm Detected) AND
Pot-Hole Protection’s PHP Switches detect Up.
Drive & Steer Prevented.
Clear the obstacle blocking
the pot-hole protection mech-
anism, repair the mechanical
problem, re-adjust the pot-
hole limit switches, or repair
the wiring to correct the prob-
lem.
Table 5-2. Flash Code Listing
FLASH
CODE
HELP MESSAGE CAUSE POSSIBLE RESOLVE
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