SECTION 8 - DIAGNOSTIC TROUBLE CODES
3121222
– JLG Lift –
8-7
222
FUNCTION PROBLEM -
INDOOR / OUTDOOR
PERMANENTLY
SELECTED
The indoor / outdoor (zone A /
zone B) switch was closed dur-
ing power-up in platform mode.
•
Check if the indoor/outdoor (zone A / zone B) capacity switch is damaged,
obstructed or jammed.
•
Replace platform board.
223
FUNCTION PROBLEM -
DRIVE & LIFT ACTIVE
TOGETHER
The drive and lift inputs are
closed simultaneously in plat-
form mode.
•
Check drive/lift switch for visible damage.
•
Check switch continuity. There should only be continuity from the center
post to one of the outer posts at a time. Otherwise, replace the switch.
•
Check drive/lift switch signal and wiring to the platform board. Its input
(0V) is from platform board terminal J1-11. "Lift" selection output (0V
when selected) is to platform board terminal J1-9. "Drive" selection out-
put (0V when closed) is to platform board terminal J1-10.
•
Replace platform board.
224
FUNCTION PROBLEM -
STEER LEFT PERMA-
NENTLY SELECTED
The steer left switch was closed
during power-up in platform
mode.
•
Check if the steer left switch is obstructed or jammed.
•
Check steer left switch and its wiring. The steer left switch input (24V) is
from platform board terminal J1-1, and its output (24V when closed) is to
platform board terminal J1-15.
•
Replace platform board.
225
FUNCTION PROBLEM -
STEER RIGHT PERMA-
NENTLY SELECTED
The steer right switch was
closed during power-up in plat-
form mode.
•
Check if the steer right switch is obstructed or jammed.
•
Check steer right switch and its wiring to the platform board. The steer
right switch input (24V) is from platform board terminal J1-1, and its out-
put (24V when closed) is to platform board terminal J1-16.
•
Replace platform board.
226
ACCELERATOR FAULTY -
WIPER OUT OF RANGE
The joystick signal is outside the
acceptable range of 0.50V - 4.5V,
or is unstable.
•
Center joystick and check to see if a power cycle will clear DTC.
•
Check the joystick signal and its wiring. The joystick input (5V) is from the
platform board terminal J1-5, its output (2.5V with joystick at center) to
the platform board terminal J1-6, and its ground (0V) is to the platform
board terminal J1-7. Observe output signal while slowly operating joy-
stick.
•
Replace platform board.
227
STEER SWITCHES
FAULTY
The steer left and steer right
inputs were closed simultane-
ously.
•
Check if the steer switches are damaged, obstructed or jammed.
•
Check the steer switch signals and wiring to the platform board. The steer
switch input (24V) is from platform board terminal J1-1, outputs (24V
when closed) are to platform board terminals J1-15 and J1-16 (left and
right).
•
Replace platform board.
228
FUNCTION LOCKED
OUT - ACCELERATOR
NOT CENTERED
The joystick was not centered at
power-up.
•
Release joystick and allow to center.
•
Check if the joystick is obstructed or jammed.
•
Check the joystick signal and its wiring. The joystick input (5V) is from the
platform board terminal J1-5, its output (2.5V with joystick at center) to
the platform board terminal J1-6, and its ground (0V) is to the platform
board terminal J1-7. Observe output signal while slowly operating joy-
stick.
•
Replace platform board.
229
FUNCTION PROBLEM -
TRIGGER PERMA-
NENTLY CLOSED
The trigger switch was closed
during power-up in platform
mode.
•
Check if the trigger switch is obstructed or jammed.
•
Check the trigger switch signal and wiring to the platform board. The trig-
ger input (24V) is from platform board terminal J1-1, and its output (24V
when closed) is to platform board terminal J1-8.
•
Replace platform board.
2-2 Platform Controls
DTC
FAULT MESSAGE
DESCRIPTION
CHECK
Summary of Contents for 1230ES
Page 1: ...AS NZS Service and Maintenance Manual Model s 1230ES P N 3121222 June 22 2017 ...
Page 2: ...NOTES ...
Page 24: ...SECTION 1 MACHINE SPECIFICATIONS 1 12 JLG Lift 3121222 NOTES ...
Page 32: ...SECTION 2 GENERAL SERVICE INFORMATION 2 8 JLG Lift 3121222 NOTES ...
Page 78: ...SECTION 4 BASE COMPONENTS 4 40 JLG Lift 3121222 NOTES ...
Page 104: ...SECTION 5 CONTROL COMPONENTS 5 26 JLG Lift 3121222 NOTES ...
Page 158: ...SECTION 8 DIAGNOSTIC TROUBLE CODES 8 22 JLG Lift 3121222 NOTES ...
Page 198: ...SECTION 9 GENERAL ELECTRICAL INFORMATION SCHEMATICS 9 40 JLG Lift 3121222 ...
Page 199: ...SECTION 9 GENERAL ELECTRICAL INFORMATION SCHEMATICS 3121222 JLG Lift 9 41 ...
Page 200: ...SECTION 9 GENERAL ELECTRICAL INFORMATION SCHEMATICS 9 42 JLG Lift 3121222 ...
Page 202: ...SECTION 9 GENERAL ELECTRICAL INFORMATION SCHEMATICS 9 44 JLG Lift 3121222 NOTES ...