JLG G12-55A AccuPlace Service Manual - Manual (Page 179)

9.61 G10-55A & G12-55A AccuPlace
Electrical System
AUX
HYDRAULICS
JOYSTICK NOT
IN NEUTRAL AT
POWER UP
2
2127 The Aux Hydraulic joystick is
not centered or one of the
joystick directional switches
is closed during system
startup. N Center joystick and normal operation
should resume. If not, check that the
command is 0% and the neutral switch
state is In-Neutral under Diagnostics/Mini
Joystick/Aux Joystick on the Analyzer
when the joystick is centered. A command
= -100% and signal voltage = 0.0V
indicates that the Joystick Power or Signal
wire has an open circuit. A command =
100% and signal voltage > 4.75V indicates
the Joystick Ground wire has an open
circuit. If the Neutral state always
indicates Neutral, then either the
directional switch or the Joystick Switch
Power wire has an open circuit.
If neutral voltage is near 2.4V or 2.5V
when centered, check that the joystick
voltage is still within the allowed deadband
detailed in the Personalities section. If
outside the deadband, adjust the
Personality setting for the Deadband.
If not, swap connector between Aux
joystick and an adjacent Mini Joystick to
determine whether the Aux joystick is
faulty. If the joystick is fine, focus
troubleshooting efforts on the connector
and wiring. If this is fine and the Joystick
Interface Module is suspected to be faulty,
verify by temporarily interchanging wiring
on the Joystick Interface Module between
joysticks for troubleshooting purposes.
Help Message
1
DTC Fault Condition
(for configurable items,
fault applies only if
configured)
Fault
Requires
AccuPlace
Reset?
Action(s)