Oshkosh Corporation JLG 450AJ, Service And Maintenance Manual

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SECTION 6 - JLG CONTROL SYSTEM
6-60 – JLG Lift – 3121659
NO ALTERNATOR OUTPUT 4310 The Engine State = ENGINE RUNNING > 10 seconds and UGM
system voltage < 11.5 volts for 10 seconds Activate the No Charge indi-
cator J4-26 per System Indi-
cators UGM system voltage > 11.7 volts
LOW OIL PRESSURE 4311 An engine with a CAN engine controller is not configured in
MACHINE SETUP
The Engine State = ENGINE RUNNING > 10 seconds
The engine oil pressure is LOW (debounce 3s).
An engine with a CAN engine controller is configured in
MACHINE SETUP
ECM transmits a J1939 DM1 message for an engine oil low
pressure critical fault (SPN:FMI 100:1) on CAN2 or uses the
J1939 Transport Protocol every one second to send this infor-
mation if multiple engine faults exist. MACHINE SETUP > ENGINE
SHUTDOWN = ENABLED then
shutdown the engine
Activate the Low Oil Pressure
indicator J4-29 Power Cycled
ENGINE COOLANT – LOW LEVEL 4334 MACHINE SETUP > ENGINE = DEUTZ EMR4;
ECM transmits a J1939 DM1 message for an engine coolant
low level fault (SPN:FMI 111:1) 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
BATTERY VOLTAGE TOO LOW –
SYSTEM SHUTDOWN 441 The UGM detects that its supply voltage is less than 9 volts
Engine State ≠ ENGINE CRANKING
Auxiliary Power/Emergency Descent Mode is not active Disable all UGM valve outputs
except those used during
APU/Emergency Descent
[Tower Lift Down, Lift Down,
Swing (400S, 450AJ, 24RS),
Jib Lift Up/Down (MACHINE
SETUP > JIB= YES)]. If
MACHINE SETUP > H&T
LIGHTS = YES or > ENGINE ≠
DUAL FUEL ECM turn off lights Voltage is greater than 9.25 volts
BATTERY VOLTAGE TOO HIGH –
SYSTEM SHUTDOWN 442 The UGM detects that its supply voltage > 16.0 volts Disable all UGM and Platform
outputs until voltage < 15.75
volts and do not permit
Machine Enable Power Cycled
LSS BATTERY VOLTAGE TOO
HIGH 443 MACHINE SETUP > LOAD SYSTEM ≠ NO
The UGM detects that the LSS reports supply voltage > 16.0V UGM to set Platform Load
State = Overloaded Not all of the trigger conditions are met
LSS BATTERY VOLTAGE TOO
LOW 444 MACHINE SETUP > LOAD SYSTEM ≠ NO
The UGM detects that the LSS reports supply voltage < 9.0V UGM to set Platform Load
State = Overloaded Not all of the trigger conditions are met
BATTERY VOLTAGE LOW 445 The UGM detects that its supply voltage < 11 volts for 5 sec-
onds.
Engine State ≠ ENGINE CRANKING
Auxiliary Power/Emergency Descent Mode is not active
Glow Plugs are not energized No response required for this
DTC Voltage is greater than 11.25 volts
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