JLG 510AJ Service Manual - Manual (Page 358)

SECTION 6 - JLG CONTROL SYSTEM
6-76 – JLG Lift – 3121181
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 man-
ner. Open circuit faults are detected when the analog feedback
reads too high and output is commanded off. Short to ground is
detected when analog feedback reads low and output is com-
manded 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 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 CIR-
CUIT Only occurs on machines with electronic basket leveling
3/5 Flash code 3/5 indicates a brake pressure problem.
NOT REQUIRED
Table 6-9. Help Fault Codes, Displayed Faults, and Descriptions
Fault Flash
Code
Analyzer Display Description Priority