SECTION 6 - JLG CONTROL SYSTEM
3121659
– JLG Lift –
6-49
START SOLENOID – SHORT TO
BATTERY
3364
UGM detects a short to battery at this output
Disable UGM Engine Start by
deenergizing Fuel Actuator
(Kubota) or sending Engine
Shutdown command (CAN-
based ECUs)
Power Cycled
STEER DUMP VALVE – SHORT
TO GROUND
3365
The UGM detects a short to ground at this output
The UGM shall prohibit Steer
Dump
Power Cycled
TWO SPEED VALVE - SHORT TO
GROUND
3368
The UGM detects a short to ground at this output
Disable UGM 2 Speed output.
If in Max Speed drive mode,
switch to Max Torque; disable
Max Speed drive mode
Power Cycled
TWO SPEED VALVE - OPEN CIR-
CUIT
3369
The UGM detects an open circuit at this output
If in Max Speed drive mode,
switch to Max Torque; disable
Max Speed drive mode
Power Cycled
TWO SPEED VALVE - SHORT TO
BATTERY
3370
The UGM detects a short to battery at this output
If in Max Speed drive mode,
switch to Max Torque; disable
Max Speed drive mode. Ramp
and limit drive speed to Creep
value for associated drive
mode:
The UGM shall disable Drive
when the Boom is Above Ele-
vation.
Power Cycled
GEN SET/WELDER – SHORT TO
GROUND
3373
MACHINE SETUP > GEN SET = BELT DRIVE and the UGM detects
a short to ground at this output
Disable UGM Generator out-
put. Do not Enable generator
functionality or set Engine to
Generator RPM.
Power Cycled
GEN SET/WELDER – OPEN CIR-
CUIT
3374
MACHINE SETUP > GEN SET = BELT DRIVE and the UGM detect
an open circuit at this output
No response required for this
DTC
Power Cycled
GEN SET/WELDER – SHORT TO
BATTERY
3375
MACHINE SETUP > GEN SET = BELT DRIVE and the UGM detects
a short to battery at this output
Disable UGM Generator out-
put, but UGM shall consider
Generator always excited
(enabled) and restrict engine
to Generator RPM. If
MACHINE SETUP > GENSET
CUTOUT = MOTION CUTOUT,
disregard cutout and permit
motion.
Power Cycled
HEAD TAIL LIGHT – SHORT TO
GROUND
3376
MACHINE SETUP > H & T LIGHTS =YES and the UGM detects a
short to ground at this output
Disable UGM H&T Light relay
output
Power Cycled
HEAD TAIL LIGHT – OPEN CIR-
CUIT
3377
MACHINE SETUP > H & T LIGHTS =YES and the UGM detects an
open circuit at this output
No response required for this
DTC
Power Cycled
HEAD TAIL LIGHT – SHORT TO
BATTERY
3378
MACHINE SETUP > H & T LIGHTS =YES and the UGM detects a
short to battery at this output
Disable UGM H&T Light relay
output
Power Cycled
Table 6-5. Diagnostic Trouble Code Chart
Help Message
DTC
Fault Condition/Trigger
(For configurable items, fault applies only if
configured. All listed conditions to be met unless
stated otherwise)
Required Control
Response or State
Assignment
Conditions Required for Movement
and/or to Clear Fault
Summary of Contents for JLG 450AJ
Page 2: ......
Page 32: ...SECTION 1 SPECIFICATIONS 1 18 JLG Lift 3121659 NOTES...
Page 80: ...SECTION 4 BOOM PLATFORM 4 2 JLG Lift 3121659 Figure 4 1 Boom Assembly...
Page 81: ...SECTION 4 BOOM PLATFORM 3121659 JLG Lift 4 3 Figure 4 2 Main Boom Assembly Sheet 1 of 2...
Page 82: ...SECTION 4 BOOM PLATFORM 4 4 JLG Lift 3121659 Figure 4 3 Main Boom Assembly Sheet 2 of 2...
Page 83: ...SECTION 4 BOOM PLATFORM 3121659 JLG Lift 4 5 Figure 4 4 Upper Boom Assembly...
Page 84: ...SECTION 4 BOOM PLATFORM 4 6 JLG Lift 3121659 Figure 4 5 Jib Assembly...
Page 118: ...SECTION 4 BOOM PLATFORM 4 40 JLG Lift 3121659 NOTES...
Page 156: ...SECTION 5 BASIC HYDRAULIC INFORMATION HYDRAULIC SCHEMATICS 5 38 JLG Lift 3121659 NOTES...
Page 164: ...SECTION 6 JLG CONTROL SYSTEM 6 8 JLG Lift 3121659 Figure 6 2 Tilt Sensor Location...
Page 169: ...SECTION 6 JLG CONTROL SYSTEM 3121659 JLG Lift 6 13 Figure 6 7 Analyzer Connecting Points...
Page 181: ...SECTION 6 JLG CONTROL SYSTEM 3121659 JLG Lift 6 25 Figure 6 19 Platform Module Sheet 1 of 2...
Page 182: ...SECTION 6 JLG CONTROL SYSTEM 6 26 JLG Lift 3121659 Figure 6 20 Platform Module Sheet 2 of 2...
Page 224: ...SECTION 6 JLG CONTROL SYSTEM 6 68 JLG Lift 3121659 NOTES...
Page 340: ...SECTION 7 BASIC ELECTRICAL INFORMATION ELECTRICAL SCHEMATICS 7 116 JLG Lift 3121659 NOTES...
Page 341: ......
