JLG 450A_AJ Series II Service Manual - Manual (Page 403)

SECTION 6 - JLG CONTROL SYSTEM
3121180 – JLG Lift – 6-67
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 analog feedback reads too high and output is
commanded off. Short to ground is detected when analog feedback
reads low and output is commanded on. Short to battery is detected
when analog feedback reads Vbat and output is commanded 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 Machines with electronic basket leveling ONLY.
BASKET DOWN SHORT TO BATTERY
BASKET DOWN SHORT TO GROUND
bASKET DOWN OPEN CIRCUIT
BASKET DOWN SHORT TO BATTERY
OR OPEN CIRCUIT Machines with electronic basket leveling ONLY.
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 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
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