JLG 450A_AJ Series II Service Manual User Manual
Page 405
SECTION 6 - JLG CONTROL SYSTEM
3121180
– JLG Lift –
6-69
4/5
Flash code 4/5 indicates problems with the S-D CAN based PVG valves
currently used on the 1250AJP only.
7
MAIN LIFT PVG COMMUNICATIONS
CAN communications lost with Main Lift PVG valve.
tower lift pvg communications
CAN communications lost with Tower Lift PVG valve.
tOWER TELESCOPE PVG COMUNI-
CATIONS
CAN communications lost with Tower Telescope PVG valve.
MAIN LIFT PVG internal fault
Main boom lift pvg valve internal fault.
tower lift pvg internal fault
Tower boom lift pvg valve has an internal fault.
tOWER TELESCOPE PVG internal fault Tower boom telescope pvg valve internal fault.
MAIN LIFT PVG VALVE HIGH VOLT-
AGE
Main boom lift pvg valve high excitation voltage.
TOWER LIFT PVG VALVE HIGH VOLT-
AGE
Tower boom lift pvg valve high excitation voltage.
TOWER TELESCOPE PVG VALVE
HIGH VOLTAGE
Tower boom telescope pvg valve high excitation voltage.
MAIN LIFT PVG VALVE LOW VOLTAGE Main boom lift pvg valve low excitation voltage.
TOWER LIFT PVG VALVE LOW VOLT-
AGE
Tower boom lift pvg valve low excitation voltage.
TOWER TELESCOPE PVG VALVE
LOW VOLTAGE
Tower boom telescope pvg valve low excitation voltage.
MAIN LIFT PVG VALVE STUCK NEU-
TRAL
Main boom lift pvg valve spool stuck in neutral position.
TOWER LIFT PVG VALVE STUCK
NEUTRAL
Tower boom lift pvg valve spool stuck in neutral position.
TOWER TELESCOPE PVG VALVE
STUCK NEUTRAL
Tower boom telescope pvg valve spool stuck in neutral position.
MAIN LIFT PVG VALVE STUCK
EXTENDED
Main boom lift pvg valve spool stuck in extended position.
TOWER LIFT PVG VALVE STUCK
EXTENDED
Tower boom lift pvg valve spool stuck in extended position.
TOWER TELESCOPE PVG VALVE
STUCK EXTENDED
Tower boom telescope pvg valve spool stuck in extended position.
MAIN LIFT PVG VALVE STUCK
RETRACTED
Main boom lift pvg valve spool stuck in retracted position.
TOWER LIFT PVG VALVE STUCK
RETRACTED
Tower boom lift pvg valve spool stuck in retracted position.
TOWER TELESCOPE PVG VALVE
STUCK RETRACTED
Tower boom telescope pvg valve spool stuck in retracted position.
MAIN LIFT PVG VALVE OBSTRUCTED Main boom lift pvg valve spool could not achieve command.
TOWER LIFT PVG VALVE
OBSTRUCTED
Tower boom lift pvg valve spool could not achieve command.
TOWER TELESCOPE PVG VALVE
OBSTRUCTED
Tower boom telescope pvg valve spool could not achieve command.
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