JLG 450A_AJ Series II Service Manual - Manual (Page 404)

SECTION 6 - JLG CONTROL SYSTEM
6-68 – JLG Lift – 3121180
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 configured, 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 bro-
ken.
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.
ECM CAN COMMUNICATION LOST Engine is configured to have a CANBUS controlled engine and JLG system
does not detect an ECM. This fault can be the result of power lost to ECM or a
break in CANBUS communications connection from ECM to JLG system.
4/4 Flash code 4/4 indicates problems with battery supply. Not reported
during 2 second power-up. 7
BATTERY LOW Battery voltage is below 11V for more than 5 seconds. Fault is not detected
during crank. This is a warning – controller does not shut down.
BATTERY TOO HIGH – SYSTEM SHUT
DOWN Battery voltage is above 16V. EMS recycle required.
BATTERY TOO LOW – SYSTEM SHUT
DOWN Battery voltage is below 9V.
Table 6-8. Help Fault Codes, Displayed Faults, and Descriptions - S/N 0300066949 & S/N 1300000001 to Present
Fault Flash
Code
Communicated (Displayed on
Analyzer) Fault
Description Priority