JLG 15/20MSP Service Manual - Manual (Page 59)

SECTION 4 - CONTROL COMPONENTS
3121231 – JLG Lift – 4-3
4.3 CONTROL COMPONENTS -
INSTALLATION
BEFORE REMOVING ANY COMPONENT FROM THE ELECTRICAL
SYSTEM, DISCONNECT THE POSITIVE TERMINAL FROM THE
LEFT SIDE BATTERY.
Ground Control Module
The Ground Control Module is located under the center
cover at the rear of the machine and is mounted on the
mast support column. All electrical components on the
machine operate directly or indirectly through the Ground
Control Module. The module is currently programmed at
the factory with the machines operating profile. If replac-
ing a Ground Control Module the new module may
require some programming to enable any optional equip-
ment. See Section 4.6, Ground Control Module - Program-
ming.
Traction Control Module
The Traction Control Module is mounted below the
Ground Control Module on the mast support column.
The traction module controls the voltage to the drive
motors as regulated by the ground control module, from
signals received via the joystick controller located on the
platform control module.
There are no internal parts serviced on this module.
Ground Control Module Installation
1. Ground Control Module 2. Attach Screws/Washers
Note: See Figure 4-2. for wiring connection instructions.
1
2
2
Traction Control Module Installation
1. Traction Control Module 2. Attach Screws/Washers
Note: See Figure 4-2. for wiring connection instructions.
1
2
2