JLG 600SC_660SJC Service Manual User Manual
Page 218
SECTION 6 - JLG CONTROL SYSTEM
6-24
– JLG Lift –
3121607
JIB DOWN SHORT TO
BATTERY
JIB DOWN SHORT TO GROUND
JIB DOWN OPEN CIRCUIT
JIB LEFT SHORT TO BATTERY
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
Only occurs on machines with electronic basket leveling
PLATFORM CONTROL VALVE
SHORT TO GROUND
Only occurs on machines with electronic basket leveling
PLATFORM CONTROL VALVE
OPEN CIRCUIT
Only occurs on machines with electronic basket leveling
3/5
Flash code 3/5 indicates a brake pressure problem.
NOT REQUIRED
4/2
Flash code 4/2 indicates engine is over temperature. NOT REQUIRED
4/3
Flash code 4/3 indicates problems with the engine. Except where noted, these
faults are not reported during 2 second power-up sequence.
9
HIGH ENGINE TEMP
Occurs when engine temperature is above 117° Celsius for Ford engines, and
above 130° Celsius for Deutz engines.
AIR FILTER BYPASSED
Air filter clogged
NO ALTERNATOR OUTPUT
Engine has been running for 15 seconds or more and battery voltage is still
below 12.5 volts.
LOW OIL PRESSURE
If a Deutz engine is installed, oil pressure is below 8 PSI and the engine has been
running for at least 10 seconds. If a Ford engine is installed, the Ford ECM has
reported a low oil pressure fault.
OIL PRESSURE SHORT TO
BATTERY
If a Deutz engine is installed, this indicates oil pressure sensor is reading above
6.6 volts.
OIL PRESSURE SHORT TO
GROUND
If a Deutz engine is installed, 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 installed, 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.
FORD FAULT CODE UNKNOWN
An unrecognized Ford ECM fault code has been received. Can be reported dur-
ing power-up sequence.
485 COMMUNICATIONS LOST
This fault only occurs with a Ford engine. It occurs when no responses are
received from the ECM for 2.5 seconds. Can be reported during power-up
sequence.
FUEL SENSOR SHORT TO
BATTERY
Indicates fuel sensor is reading above 4.3 volts.
Table 6-3. Help Fault Codes, Displayed Faults, and Descriptions
Fault Flash
Code
Communicated (Displayed on
Analyzer) Fault
Description
Priority