Oshkosh Corporation JLG 450AJ Service And Maintenance Manual Download

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SECTION 6 - JLG CONTROL SYSTEM

3121659

– JLG Lift –

6-59

JIB LIFT UP VALVE – SHORT TO
BATTERY

3416

MACHINE SETUP > JIB = YES
The PM detects a short to battery at this output and reports it
to the UGM

The UGM shall disable com-
mands to PM for Jib Lift Up
and Down;
The UGM shall prohibit Flow
Control

Power Cycled

JIB LIFT UP VALVE – SHORT TO
GROUND

3417

MACHINE SETUP > JIB = YES
The PM detects a short to ground at this output and reports it
to the UGM

The UGM shall disable com-
mands to PM for Jib Lift Up;
The UGM limits Jib Lift Down
to Creep speed

Power Cycled

JIB LIFT DOWN VALVE – OPEN
CIRCUIT

3418

MACHINE SETUP > JIB = YES
The PM detects an open circuit at this output and reports it to
the UGM

The UGM shall suspend com-
mands to PM for Jib Lift Up
and Down;
The UGM shall prohibit Jib Lift
Up;
The UGM shall limit Jib Lift
Down to Creep speed

The PM 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

3419

MACHINE SETUP > JIB = YES
The PM detects a short to battery at this output and reports it
to the UGM

The UGM shall disable com-
mands to PM for Jib Lift Up
and Down;
(450AJ) The UGM shall pro-
hibit Flow Control

Power Cycled

JIB LIFT DOWN VALVE – SHORT
TO GROUND

3420

MACHINE SETUP > JIB = YES
The PM detects a short to ground at this output and reports it
to the UGM; detection occurs for PWM output approximately
≤ 15% or for STG condition.

The UGM shall disable com-
mands to PM for Jib Lift Up
and Down

Power Cycled

FUEL SENSOR - SHORT TO BAT-
TERY OR OPEN CIRCUIT

431

UGM fuel sensor analog input J2-25 detects a voltage higher
than 2.50 volts (A/D > 512)

Energize fuel sensor per Sys-
tem Indicators

Power Cycled

FUEL SENSOR - SHORT TO
GROUND

432

UGM fuel sensor analog input J2-25 detects a voltage less than
or equal to 0.3 volts (A/D < 61)

Energize fuel sensor per Sys-
tem Indicators

Power Cycled

ENGINE TROUBLE CODE

437

An engine with a CAN engine controller is configured in
MACHINE SETUP
The engine controller reports a J1939 fault

Report and log in Help
If [(MACHINE SETUP > DEUTZ
EMR2) or (MACHINE SETUP >
DEUTZ EMR4) and SPN:FMI =
535:7], prohibit engine
cranking

Power Cycled

HIGH ENGINE TEMP

438

An engine with a CAN engine controller is not configured in
MACHINE SETUP:
The Engine State = ENGINE RUNNING > 10 seconds
The coolant temperature is greater than or equal to the config-
ured engines max allowed temperature. The maximum
allowed temperature > 110ºC.
An engine with a CAN engine controller is configured in
MACHINE SETUP:
ECM transmits a J1939 DM1 message for an engine coolant
high temperature critical fault (SPN:FMI 110:0) on CAN2 or
uses the J1939 Transport Protocol every one second to send
this information if multiple engine faults exist.

MACHINE SETUP > ENGINE
SHUTDOWN = ENABLED then
shutdown the engine
Activate High Engine Tem-
perature indicator J4-28

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