JLG 450A_AJ Series II Service Manual - Manual (Page 340)

SECTION 6 - JLG CONTROL SYSTEM
6-30 – JLG Lift – 3121290
Table 6-4. System Test Messages
Message Displayed on
Analyzer
Message Displayed on
Analyzer
Description
RUNNING Initial display when system test is run; certain “critical” checks are made.
Problems that can be reported include below messages.
ONLY 1 ANALYZER! Do not connect two Analyzers while running the system test.
BATTERY TOO LOW The system test cannot run with battery voltage below minimum (9 V).
BATTERY TOO HIGH The system test cannot run with battery voltage above maximum. (16
V).
CHECK CAN WIRING The system test cannot run in platform mode unless data is being
received from the platform and ground modules. The system test can-
not run in ground mode unless data is being received from the platform
module.
CHECK SPEED There is an open- or short- circuit in the speed encoder wiring. Check
speed encoder.
BAD GROUND MODULE An internal problem was detected in the ground module.
HIGH TILT ANGLE The vehicle is very tilted (19.3°), or the tilt sensor has been damaged.
Check tilt sensor.
HOT ENGINE The engine temperature exceeds 100 °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.
OPEN FSW In platform mode, the footswitch must be open at the start of the test.
CLOSE FSW In platform mode, the footswitch must be closed when this message is
displayed; the footswitch MUST BE KEPT CLOSED during the valve &
contactor tests.
BAD FSW 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 mod-
ule. Check footswitch and wiring.