JLG E300 Service Manual - Manual (Page 197)

SECTION 6 - JLG CONTROL SYSTEM
3121253 – JLG Lift – 6-29
Table 6-6. System Test Messages
RUNNING Initial display when system test is run; certain “critical” checks are made. Problems which can be reported include:
ONLY 1 ANALYZER!
Do not connect two Analyzers while running the system test.
BAD POWER WIRING
The capacitor bank is not charged or pump point A is low or traction point A is high or low.
Check all power wiring.
LINE CONT WELDED
The capacitor bank is at battery voltage.
Check line contactor.
Check all power wiring.
BATTERY TOO LOW
The system test cannot run with battery voltage below minimum.
BATTERY TOO HIGH
The system test cannot run with battery voltage above maximum.
CHECK CAN WIRING
The system test cannot run in platform mode unless data is being received from the
platform, ground and positrac/tilt modules. The system test cannot run in ground mode
unless data is being received from the ground and positrac/tilt modules.
CHECK LEFT SPD.
There is an open- or short- circuit in the left speed encoder wiring. Check left speed
encoder.
CHECK RIGHT SPD.
There is an open- or short- circuit in the right speed encoder wiring. Check right speed
encoder.
CHECK SHUNT
The traction current measurement is open-circuit.
Check wiring between power module contactor panel.
BAD PUMP WIRING
Pump point A is not high, probably caused by an open-circuit pump motor or wiring.
Check all power wiring. Check pump motor.
BAD POWER WIRING
Traction point A is high, probably caused by incorrect faction motor wiring. Check all
power wiring. Check traction motor.
BAD POWER MODULE
An internal problem was detected in the power module.
HIGH TILT ANGLE
The vehicle is very tilted, or the tilt sensor has been damaged. Check tilt sensor.
HOT POWER MODULE
The heat sink temperature exceeds 75°C; this is only a warning.
BAD I/O PORTS
The controller detected a problem with its internal circuits at switch on. If other problems
are also detected, the controller may need replacing.
SUSPECT EEPROM
The controller detected a problem with its EEPROM stored personality settings at
switch on. Check and, if necessary correct, all personality settings.
WAIT:CAPBANK HI
This message can be displayed if the system test is run shortly after the vehicle was used;
after a short wait, it should clear.
OPEN FWS
In platform mode, the footswitch must be open at the start of the test.
CLOSE FWS
In platform mode, the footswitch must be closed when this message is displayed; the foot
switch MUST BE KEPT CLOSED during the valve & contactor tests.
BAD FWS
The two footswitch signals are not changing together, probably because one is
open-circuit. One footswitch signal (“FSW1”) is routed to the power module, the other
(“FSW2”) is routed to the platform module. Check footswitch and wiring.