JLG 1250AJP Troubleshooting Manual page 287

Message Displayed on
Analyzer
RUNNING
TESTING VALVES
3128411
Table 4-3. System Test Messages
Message Displayed on
Analyzer
ONLY 1 ANALYZER!
BATTERY TOO LOW
BATTERY TOO HIGH
CHECK CAN WIRING
CHECK SPEED
BAD GROUND MODULE
HIGH TILT ANGLE
HOT ENGINE
BAD I/O PORTS
SUSPECT EEPROM
OPEN FSW
CLOSE FSW
BAD FSW
CANT TEST VALVES
XXXXXXX S/C
XXXXXXX O/C
Initial display when system test is run; certain "critical" checks are made. Prob-
lems that can be reported include below messages.
Do not connect two Analyzers while running the system test.
The system test cannot run with battery voltage below minimum (9 V).
The system test cannot run with battery voltage above maximum. (16 V).
The system test cannot run in platform mode unless data is being received from
the platform and ground modules. The system test cannot run in ground mode
unless data is being received from the platform module.
There is an open- or short- circuit in the speed encoder wiring. Check speed
encoder.
An internal problem was detected in the ground module.
The vehicle is very tilted (19.3°), or the tilt sensor has been damaged. Check tilt
sensor.
The engine temperature exceeds 100×C. This is only a warning.
The controller detected a problem with its internal circuits at switch on. If other
problems are also detected, the controller may need replacing.
The controller detected a problem with its EEPROM stored personality settings
at switch on. Check and, if necessary correct, all personality settings.
In platform mode, the footswitch must be open at the start of the test.
In platform mode, the footswitch must be closed when this message is dis-
played; the footswitch MUST BE KEPT CLOSED during the valve & contactor
tests.
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 wir-
ing.
Indicates that the valve test is beginning. Each valve is alternately energized 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 telescope
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.
There is a wiring problem, which prevents the valve test from functioning cor-
rectly. Check valve wiring. Check ground alarm & hour meter wiring.
The named valve is drawing too much current so is presumed to be short-cir-
cuited. Check valve wiring.
The named valve is drawing too little current so is presumed to be open-circuit.
Check valve wiring.
1250AJP
SECTION 4 - JLG ANALYZER
Description
4-287