JLG 450A_AJ Series II Service Manual User Manual
Page 359
SECTION 6 - JLG CONTROL SYSTEM
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– JLG Lift –
6-49
3/4
(Continued)
JIB LEFT SHORT TO GROUND
JIB LEFT OPEN CIRCUIT
JIB RIGHT SHORT TO BATTERY
JIB RIGHT SHORT TO GROUND
JIB RIGHT OPEN CIRCUIT
PLATFORM CONTROL VALVE
SHORT TO BATTERY
Machines with electronic basket leveling ONLY.
PLATFORM CONTROL VALVE
SHORT TO GROUND
Machines with electronic basket leveling ONLY.
PLATFORM CONTROL VALVE OPEN
CIRCUIT
Machines with electronic basket leveling ONLY.
3/5
Flash code 3/5 indicates a brake pressure problem.
NOT REQUIRED
4/2
Flash code 4/2 indicates that the engine is over temperature.
NOT REQUIRED
4/3
Flash code 4/3 indicates engine problems. These faults are not
reported during 2 second power-up sequence except where
noted.
9
HIGH ENGINE TEMP
Occurs when engine temperature is above 117 degrees Celsius for
Ford and 130 degrees Celsius for Deutz engines.
AIR FILTER BYPASSED
Air filter clogged
NO ALTERNATOR OUTPUT
Engine running for 15 seconds or more and battery voltage still
below 11.5 volts.
LOW OIL PRESSURE
If a Deutz engine is configured, oil pressure is below 8 PSI and engine
has been running for at least 10 seconds. If a Ford engine is config-
ured, Ford ECM has reported a low oil pressure fault.
OIL PRESSURE SHORT TO BATTERY
If a Deutz engine is configured, this indicates oil pressure sensor is
reading above 6.6 volts.
OIL PRESSURE SHORT TO GROUND If a Deutz engine is configured, this indicates oil pressure sensor is
reading below 0.1 volts for more than 5 seconds. This fault is not
detected during crank.
COOLANT TEMPERATURE SHORT
TO GROUND
If a Deutz engine is configured, this indicates coolant temperature is
reading below 0.1 volts.
FORD FAULT CODE ##
All Ford fault codes except 63 are simply passed through from the
FORD ECM. They only occur if a Ford engine is selected in machine
configuration digits. Can be reported during power-up sequence.
ENGINE FAULT CODE :
###(SPN) :###(FMI)
All J1939 CANBUS ECMs report fault messaging in this format. SPN
number represents what is broken and FMI number represents how
component is broken.
FORD FAULT CODE UNKNOWN
An unrecognized Ford ECM fault code has been received. Can be
reported during power-up sequence.
485 COMMUNICATIONS LOST
Ford engine ONLY. No responses received from ECM for 2.5 seconds.
Can be reported during power-up sequence.
FUEL SENSOR SHORT TO BATTERY
Fuel sensor reading above 4.3 volts.
FUEL SENSOR SHORT TO GROUND
Fuel sensor is reading below 0.2 volts.
WRONG ENGINE SELECTED – ECM
PRESENT
Engine Control Module (ECM) detected on the CANBUS. Only
applies when non-CANBUS engine setups are configured.
Table 6-6. Help Fault Codes, Displayed Faults, and Descriptions
Flash Code
Fault Displayed on Analyzer
Description
Priority