Oshkosh Corporation JLG 450AJ, Service And Maintenance Manual

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SECTION 6 - JLG CONTROL SYSTEM
6-52 – JLG Lift – 3121659
TOWER LIFT DOWN VALVE –
SHORT TO GROUND 33109 The UGM detects a short to ground at this output The UGM shall prohibit Tower
Lift Up and Down Power Cycled
TOWER LIFT DOWN VALVE –
OPEN CIRCUIT 33110
The UGM detects an open circuit at this output
The UGM shall suspend Tower
Lift Up and Down command
and revert to Open Loop Cur-
rent control for Tower Lift;
The UGM shall prohibit Tower
Lift Up;
The UGM shall limit Tower Lift
Down to Creep speed after
controls initialized The UGM no longer detects open circuit;
Tower Lift Up permitted after controls are
initialized;
Full speed Tower Lift Down permitted after
controls are initialized
SWING RIGHT VALVE – SHORT
TO GROUND 33118 The UGM detects a short to ground at this output The UGM shall prohibit Swing
Left and Right Power Cycled
SWING RIGHT VALVE – OPEN
CIRCUIT 33119 The UGM detects an open circuit at this output The UGM shall suspend Swing
Left and Right command and
revert to Open Loop Current
control for Swing;
The UGM shall limit Swing
Left and Right to Creep speed
after controls initialized The UGM no longer detects open circuit;
Full speed Swing Left and Right permitted
after controls are initialized
TELESCOPE IN VALVE – SHORT
TO BATTERY 33120 The UGM detects a short to battery at this output The UGM shall prohibit Tele-
scope In, Out and Flow Con-
trol Power Cycled
SWING LEFT VALVE – SHORT TO
GROUND 33122 The UGM detects a short to ground at this output The UGM shall prohibit Swing
Left and Right Power Cycled
TELESCOPE OUT VALVE –
SHORT TO BATTERY 33123 The UGM detects a short to battery at this output The UGM shall prohibit Tele-
scope In, Out and Flow Con-
trol Power Cycled
LIFT VALVES – SHORT TO BAT-
TERY 33182 The UGM detects a short to battery at either the Lift Up or Lift
Down valve
The UGM shall prohibit Lift Up
and Down;
The UGM shall open the Lift
Current Feedback low side
FET Power Cycled
TELESCOPE OUT VALVE – OPEN
CIRCUIT 33186 The UGM detects an open circuit at this output (340AJ, 400S, 450AJ)
The UGM shall suspend Tele-
scope In and Out
(18RS, 24RS) The UGM shall
suspend Telescope In and Out
command and revert to Open
Loop Current control for Tele-
scope
The UGM shall limit Telescope
In and Out to Creep speed
after controls initialized
The UGM no longer detects open circuit;
Full speed Telescope In and Out permitted
after controls are initialized
TELESCOPE OUT VALVE –
SHORT TO GROUND 33188 The UGM detects a short to ground at this output The UGM shall prohibit Tele-
scope Out;
Tele In speed limited to Creep 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