JLG 510AJ Service Manual - Manual (Page 337)

SECTION 6 - JLG CONTROL SYSTEM
3121181 – JLG Lift – 6-55
Table 6-7. 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 set-
tings.
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 & con-
tactor 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 module.
Check footswitch and wiring.
TESTING VALVES Indicates that the valve test is beginning. Each valve is alternately ener-
gized and de-energized; checks are made for open- and short- circuit
valve coils.
NOTE: In platform mode, the footswitch must be closed.
NOTE: Tower lift valves are not tested if TOWER LIFT=NO. Tower tele-
scope valves are not tested if TOWER TELE=NO. Jib valves are not tested if
JIB = NO. Extendable axle valves are not tested if EXT AXLES=NO. Four
wheel steer valves are not tested if 4WS=NO.
NOTE: Left/right jib valves are not tested unless JIB = SIDESWING.
Problems that can be reported include below messages.
CANT TEST VALVES There is a wiring problem, which prevents the valve test from function-
ing correctly. Check valve wiring. Check ground alarm & hour meter wir-
ing.
XXXXXXX S/C The named valve is drawing too much current so is presumed to be
short-circuited. Check valve wiring.
XXXXXXX O/C The named valve is drawing too little current so is presumed to be open-
circuit. Check valve wiring.