JLG 4394RT Service Manual - Manual (Page 166)

SECTION 5 - JLG CONTROL SYSTEM
5-12 – JLG Lift– 3121133
4/3 Flash code 4/3 indicates engine issues.
7
FUEL SENSOR SHORT TO BATTERY Reported when the fuel sensor is reading a value that is much
too high.
FUEL SENSOR SHORT TO GROUND Reported when the fuel sensor is reading ground.
FUEL SENSOR DISCONNECTED Reported when the fuel sensor is reading a value that is too
high.
OIL PRESSURE SHORT TO BATTERY Reported when the oil pressure sensor is reading a value that is
too high.
OIL PRESSURE SHORT TO GROUND Reported when the oil pressure sensor is reading a value that is
too low.
COOLANT TEMPERATURE SHORT TO GROUND Reported when the coolant temperature sensor is reading a
value that is too low.
FORD FAULT CODE Reported by the Ford engine.
ENGINE TEMPERATURE HIGH This fault is not reported at this time.
AIR FILTER BYPASSED This fault is not reported at this time.
NO ALTERNATOR OUTPUT Reported when the engine is running for at least a few seconds
and the alternator input is on the ground board is high.
OIL PRESSURE LOW Reported when the oil pressure is below eight PSI and the
engine is running for at least a few seconds.
485 COMMUNICATIONS LOST Reported when a Ford engine is selected and communications
with the Ford engine controller are lost.
ENGINE SHUTDOWN COMMANDED – CHECK ENGINE
SENSORS Reported when the engine is commanded to shutdown by the
control system.
WRONG ENGINE SELECTED Reported when CAN ECM is detected and not configured.
DEUTZ ECM FAULT CODE Reported when the Deutz Engine Controller is giving a fault.
4/4 Flash code 4/4 indicates a battery supply issue.
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BATTERY LOW Reported when the voltage on the system is below 11 volts.
BATTERY TOO HIGH – SYSTEM SHUTDOWN Reported when the voltage on the system is above 16 volts.
BATTERY TOO LOW – SYSTEM SHUTDOWN Reported when the voltage on the system is below 9 volts.
LSS BATTERY VOLTAGE HIGH Reported when the voltage on the LSS is above 34 volts.
LSS BATTERY VOLTAGE LOW Reported when the voltage on the LSS is below 9 volts.
5/5 Flash code 5/5 indicates a speed sensor issue.
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SPEED SENSOR READING INVALID SPEED Reported when the speed sensor is reading a value over 4000
RPM.
SPEED INPUT LOST Reported when the speed sensor is reading zero RPM and the
oil pressure is over eight PSI.
6/6 Flash code 6/6 indicates CANbus issues. 10
CAN BUS FAILURE Reported when there is a problem with the CANbus.
LSS NOT SENDING CAN MESSAGES Reported when the LSS is configured and not seen on the CAN-
bus.
ENGINE CONTROLLER CAN COMMUNICATION LOST Reported when the engine is configured to be CAN controlled
and the system is not communicating with it.
TWO PLATFORM MODULES DETECTED Reported when there are two platform modules connected to
the control system.
Table 5-1. Fault Code Listing - Software P1.X
Fault Flash
Code
Communicated (Displayed on Analyzer) Fault Description Priority