JLG 45e Service Manual - Manual (Page 31)

SECTION -
3120861 – JLG Lift – -5
2. General Features.
a. Diagnostics.
To obtain flash code, depress footswitch and
repeat operation which caused fault. After fault
occurs, maintain footswitch and function posi-
tion and read flash code. NOTE: Flash code
repeats after pause.
Flash codes are as follows:
LED On - Controller Operational.
LED Off - Internal Fault or Power Not Turned On.
1 Flash - Internal Fault
2 Flashes - Procedure Fault.
(Recycle Footswitch)
This includes direction or function selected at
power on, or direction and function selected
together.
3 Flashes - Motor Permanently Low.
This includes MOSFET short circuit.
4 Flashes - Motor Permanently High.
This includes direction or pump/traction contac-
tor welded.
5 Flashes - Motor Neither Low Nor High. (Open
Circuit)
This includes direction or pump/traction contac-
tor open circuit, MOSFET open circuit and hard-
ware fail-safe trip.
6 Flashes - Faulty Drive Hand Controller.
This includes drive hand controller greater than
30% at power on, and wire off. Note that the
pump accelerator is not fault detected.
7 Flashes - Low Battery Voltage.
This includes battery voltage below 13 volts.
8 Flashes - Thermal Cutback, Controller.
This includes MOSFET temperature above 80
degrees C (176 degrees F).
10 Flashes - Tachometer Fault.
When in traction drive with the controller pulsing
at greater than 33% ON for more than 1 second,
the tachometer input shall be monitored. Failure
of the tachometer will result in a 10 flash diag-
nostic fault being raised and the brake applied,
i.e., machine is disabled if tachometer fails. The
fault is only recyclable using the footswitch.
11 Flashes - Tachometer out of calibration.
Tachometer output is sensed when vehicle is in
neutral failure occurs when at the input to
MOS90:
1 tachometer PCB output was above 9.0 volts or
below 6 volts.
Prevents TRACTION and PUMP modes.
NOTE: Refer to Figure 2-1, Troubleshooting Flow Charts, for
specific troubleshooting information.