SECTION 6 - JLG CONTROL SYSTEM
6-54
– JLG Lift –
3121659
FLOW CONTROL VALVE – OPEN
CIRCUIT
33314 The UGM detects an open circuit at this output
The UGM shall suspend Flow
Control and revert to Open
Current loop control for Flow
Control;
The UGM shall limit Tele-
scope, Jib Lift Up, Jib Lift
Down (400S, 450AJ), Plat-
form Rotate and Platform
Level to Creep speed after
controls initialized
The UGM no longer detects open circuit;
Full speed Telescope, Jib Lift Up, Jib Lift
Down (400S, 450AJ), Platform Rotate and
Platform Level permitted after controls are
initialized
FLOW CONTROL VALVE –
SHORT TO BATTERY
33315 The UGM detects a short to battery at this output
The UGM shall prohibit Flow
Control, Telescope, Jib Lift Up
(permitted if operating in
Auxiliary Power/Emergency
Descent mode), Jib Lift Down
(permitted if operating in
Auxiliary Power/Emergency
Descent mode)(400S,
450AJ), Platform Rotate and
Platform Level
Power Cycled
FLOW CONTROL VALVE –
SHORT TO GROUND
33316 The UGM detects a short to ground at this output
The UGM shall prohibit Flow
Control, Telescope, Jib Lift Up,
Jib Lift Down (400S, 450AJ),
Platform Rotate and Platform
Level
Power Cycled
DRIVE FORWARD VALVE –
OPEN CIRCUIT
33317
The UGM detects an open circuit at this output
The UGM shall suspend Drive
Forward and Reverse com-
mand and revert to Open Cur-
rent loop control for Drive;
The UGM shall limit Drive For-
ward and Reverse to Creep
speed after controls initial-
ized
The UGM no longer detects open circuit;
Full speed Drive Forward and Reverse per-
mitted after controls are initialized
DRIVE VALVES – SHORT TO BAT-
TERY
33318 The UGM detects a short to battery at either the Drive Forward
or Drive Reverse valve.
The UGM shall prohibit Drive
Forward and Reverse;
The UGM shall open the Drive
Current Feedback low side
FET
Power Cycled
DRIVE FORWARD VALVE –
SHORT TO GROUND
33319 The UGM detects a short to ground at this output
The UGM shall prohibit Drive
Forward and Reverse
Power Cycled
DRIVE REVERSE VALVE – OPEN
CIRCUIT
33320 The UGM detects an open circuit at this output
The UGM shall suspend Drive
Forward and Reverse com-
mand and revert to Open Cur-
rent loop control for Drive;
The UGM shall limit Drive For-
ward and Reverse to Creep
speed after controls initial-
ized
The UGM no longer detects open circuit;
Full speed Drive Forward and Reverse per-
mitted after controls are initialized
DRIVE REVERSE VALVE – SHORT
TO GROUND
33322 The UGM detects a short to ground at this output
The UGM shall prohibit Drive
Forward and Reverse
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: ......
