JLG 400S Service And Maintenance Manual page 517

Help Message DTC
FUNCTIONS PREVENTED - 4376
ENGINE OIL WARM UP ACTIVE
BATTERY VOLTAGE TOO LOW – 441
SYSTEM SHUTDOWN
BATTERY VOLTAGE TOO HIGH – 442
SYSTEM SHUTDOWN
LSS BATTERY VOLTAGE TOO 443
HIGH
LSS BATTERY VOLTAGE TOO 444
LOW
BATTERY VOLTAGE LOW 445
LSS BATTERY VOLTAGE - INI- 4479
TIALIZATION ERROR
3121671
Table 6-11. Diagnostic Trouble Code Chart
Fault Condition/Trigger
(For configurable items, fault applies only if
configured. All listed conditions to be met
unless stated otherwise)
Engine Oil Warm Up is active because the engine was
started when the engine coolant was less than 32 deg F.
Engine Oil Warm Up will remain active until the engine
coolant is greater than 32 deg F or the engine has been
running for 60s and the engine coolant is less than 32
deg F.
Machine functions will be prevented until Engine Oil
Warm Up is complete.
The UGM detects that its supply voltage is less than 9
volts
Engine State ≠ ENGINE CRANKING
Auxiliary Power/Emergency Descent Mode is not active
The UGM detects that its supply voltage > 16.0 volts
MACHINE SETUP > LOAD SYSTEM ≠ NO
The UGM detects that the LSS reports supply voltage >
16.0V
MACHINE SETUP > LOAD SYSTEM ≠ NO
The UGM detects that the LSS reports supply voltage <
9.0V
The UGM detects that its supply voltage < 11 volts for 5
seconds.
Engine State ≠ ENGINE CRANKING
Auxiliary Power/Emergency Descent Mode is not active
Glow Plugs are not energized
The shear beam is reporting a Sensor Supply Voltage
Initialization Error
The machine will assume the platform is overloaded.
This fault, once annunciated is latched within a given
key cycle.
SECTION 6 - JLG CONTROL SYSTEM
Required Control
Conditions Required for Movement
Response or State
and/or to Clear Fault
Assignment
Disable all UGM valve out- Voltage is greater than 9.25 volts
puts 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
Disable all UGM and Plat- Power Cycled
form outputs until voltage
< 15.75 volts and do not
permit Machine Enable
The load sensor has deter- Check for issue with sensor supply voltage. X
mined that its supply volt-
age is too high (> 16V).
The machine will assume
the platform is over-
loaded.
The load sensor has deter- Check for issue with sensor supply voltage. X
mined that its supply volt-
age is too low (> 8V).
The machine will assume
the platform is over-
loaded.
No response required for Voltage is greater than 11.25 volts
this DTC
Possible sensor hardware
issue.
X X
X X
X
X
X X
6-77