JLG 450A_AJ Series II Service Manual - Manual (Page 360)

SECTION 6 - JLG CONTROL SYSTEM
6-50 – JLG Lift – 3121290
4/3
(Continued)
ECM CAN COMMUNICATION LOST Engine is configured to have a CANBUS controlled engine and JLG
system does not detect an ECM. This fault can be the result of power
lost to ECM or a break in CANBUS communications connection from
ECM to JLG system.
4/4 Flash code 4/4 indicates problems with battery supply. Not
reported
during 2 second power-up.
7
BATTERY LOW Battery voltage is below 11V for more than 5 seconds. Fault is not
detected
during crank. This is a warning – controller does not shut down.
BATTERY TOO HIGH – SYSTEM
SHUT DOWN Battery voltage is above 16V. EMS recycle required.
BATTERY TOO LOW – SYSTEM SHUT
DOWN Battery voltage is below 9V.
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 VOLT-
AGE 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.
Table 6-6. Help Fault Codes, Displayed Faults, and Descriptions
Flash Code Fault Displayed on Analyzer Description Priority