Oshkosh JLG 400S, Service And Maintenance Manual

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SECTION 6 - JLG CONTROL SYSTEM (S/N 61718 TO PRESENT)
6-32 – JLG Lift – 3120895
3/4 Flash code 3/4 indicates a driver problem on a platform valve block valve
driver. All driver faults are detected in a similar manner. Open circuit
faults are detected when the analog feedback reads too high and the out-
put is commanded off. Short to ground is detected when the analog feed-
back reads low and the output is commanded on. Short to battery is
detected when the analog feedback reads Vbat and the output is com-
manded off. Not reported during 2 second power-up. An EMS cycle is
required. 6
BASKET UP SHORT TO BATTERY
BASKET UP SHORT TO GROUND
BASKET UP OPEN CIRCUIT
BASKET UP SHORT TO BATTERY OR
OPEN CIRCUIT Only occurs on machines with electronic basket leveling
BASKET DOWN SHORT TO BATTERY
BASKET DOWN SHORT TO GROUND
bASKET DOWN OPEN CIRCUIT
BASKET DOWN SHORT TO BATTERY
OR OPEN CIRCUIT Only occurs on machines with electronic basket leveling.
BASKET LEFT SHORT TO BATTERY
BASKER LEFT SHORT TO GROUND
BASKET LEFT OPEN CIRCUIT
BASKET RIGHT SHORT TO BATTERY
BASKET RIGHT SHORT TO GROUND
BASKET RIGHT OPEN CIRCUIT
JIB UP SHORT TO BATTERY
JIB UP SHORT TO GROUND
JIB UP OPEN CIRCUIT
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
Table 6-3. Help Fault Codes, Displayed Faults, and Descriptions - S/N 66995 to Present
Fault Flash
Code
Communicated (Displayed on
Analyzer) Fault
Description Priority