Oshkosh Corporation JLG 450AJ Service And Maintenance Manual Download

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SECTION 6 - JLG CONTROL SYSTEM

3121659

– JLG Lift –

6-51

PLATFORM ROTATE RIGHT
VALVE – SHORT TO GROUND

3397

The UGM detects a short to ground at this output

The UGM shall prohibit Plat-
form Rotate Left and Right

Power Cycled

PLATFORM ROTATE RIGHT
VALVE – OPEN CIRCUIT

3398

The UGM detects an open circuit at this output

The UGM shall suspend Plat-
form Rotate Left and Right;
(340AJ, 400S, 450AJ) The
UGM shall limit Platform
Rotate Left and Right to
Creep speed after controls ini-
tialized;
(18RS, 24RS) Platform Rotate
Left and Right permitted
after controls are initialized

The UGM no longer detects open circuit;
(340AJ, 400S, 450AJ) Full speed Platform
Rotate Left and Right permitted after con-
trols are initialized

PLATFORM ROTATE RIGHT
VALVE – SHORT TO BATTERY

3399

The UGM detects a short to battery at this output

The UGM shall prohibit Plat-
form Rotate Left, Right and
Flow Control Valve outputs

Power Cycled

JIB LIFT UP VALVE - SHORT TO
GROUND

33100 MACHINE SETUP > JIB = YES;

The UGM detects a short to ground at this output

The UGM shall prohibit Jib Lift
Up;
The UGM shall limit Jib Lift
Down to Creep speed

Power Cycled

JIB LIFT UP VALVE - OPEN CIR-
CUIT

33101 MACHINE SETUP > JIB = YES;

The UGM detects an open circuit at this output

The UGM shall suspend Jib
Lift Up and Down;
The UGM shall limit Jib Lift Up
and Down to Creep speed
after controls initialized

The UGM no longer detects open circuit;
Full speed Jib Lift Up and Down permitted
after controls are initialized

JIB LIFT UP VALVE - SHORT TO
BATTERY

33102 MACHINE SETUP > JIB = YES;

The UGM detects a short to battery at this output

The UGM shall prohibit Jib Lift
Up, Down and Flow Control

Power Cycled

JIB LIFT DOWN VALVE - SHORT
TO GROUND

33103 MACHINE SETUP > JIB = YES;

The UGM detects a short to ground at this output

The UGM shall prohibit Jib Lift
Up and Down

Power Cycled

JIB LIFT DOWN VALVE - OPEN
CIRCUIT

33104 MACHINE SETUP > JIB = YES;

The UGM detects an open circuit at this output

The UGM shall suspend Jib
Lift Up and Down;
The UGM shall prohibit Jib Lift
Up;
The UGM shall limit Jib Lift
Down to Creep speed after
controls initialized

The UGM no longer detects open circuit;
Jib Lift Up permitted after controls are ini-
tialized
Full speed Jib Lift Down permitted after
controls are initialized

JIB LIFT DOWN VALVE - SHORT
TO BATTERY

33105 MACHINE SETUP > JIB = YES;

The UGM detects a short to battery at this output

The UGM shall prohibit Jib Lift
Up, Down and Flow Control

Power Cycled

TOWER LIFT UP VALVE – SHORT
TO GROUND

33106 The UGM detects a short to ground at this output

The UGM shall prohibit Tower
Lift Up;
The UGM shall limit Tower Lift
Down Creep speed

Power Cycled

TOWER LIFT UP VALVE – OPEN
CIRCUIT

33107 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 limit Tower Lift
Up and Down to Creep speed
after controls initialized

The UGM no longer detects open circuit;
Full speed Tower Lift Up and Down permit-
ted after controls are initialized

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