JLG 3246ES Service Manual - Manual (Page 133)

SECTION 5 - JLG CONTROL SYSTEM
3121166 – JLG Lift – 5-13
2 5 ELEV ANGLE SENSOR HAS NOT BEEN CALIBRATED
The Elevation Sensor’s Calibration EEPROM is set to the signa-
ture implanted by the In-Circuit Test Fixture. Retained until
Calibration EEPROM is over-written by a valid calibration.
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 indi-
cates that the Platform is Stowed. To be conservative, the con-
trol system will assume that the Platform is Elevated.
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 pro-
cedure to clear the message.
2 5 DRIVE PREVENTED – CHARGER CONNECTED
Driving is not possible since the vehicle is charging and it is con-
figured 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 CONNECTED
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 functions from
ground control may be prevented, depending on machine con-
figuration.
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 system
detected that the pot-hole protection mechanism failed to
deploy.
In Platform Mode with a Healthy Elevation Sensor, the Eleva-
tion Sensor Voltage > 0.15V AND Pot-Hole Protection’s PHP
Switches detect Up.
In Platform Mode with an Unhealthy Elevation Sensor, the Ele-
vation 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 mecha-
nism, repair the mechanical
problem, re-adjust the pot-hole
limit switches, or repair the wir-
ing to correct the problem.
Table 5-2. Flash Code Listing
Flash
Code
Help Message Cause Possible Resolve