SECTION 6 - JLG CONTROL SYSTEM
6-22
31215031
2518
25
18
DRIVE PREVENTED - BOOM SELECTED
MACHINE SETUP > FUNCTION CUTOUT =
BOOM CUTOUT
The boom is Above Elevation
Any boom function is already active The
operator attempts to activate Drive or
Steer.
The UGM shall prohibit Drive
and Steer.
2519
25
19
DRIVE PREVENTED - TILTED & EXTENDED OR HIGH ANGLE
Drive Selected while tilted and extended
and tilt is configured to cutout drive.
2520
25
20
FUNCTIONS LOCKED OUT - CONSTANT DATA VERSION
IMPROPER
2563
25
63
SKYGUARD SWITCH - DISAGREEMENT
MACHINE SETUP > SKYGUARD = YES;
Machine is in Platform Mode;
[(SkyGuard input #1 Platform Module J7-
18)
≠
(SkyGuard input #2 Platform Module
J1-23)] > 160ms
Response detailed in Sky-
Guard section.
2568
25
68
TEMPERATURE CUTOUT ACTIVE - AMBIENT TEMPERATURE
TOO LOW
Low Temperature Cutout = Active
If the Boom is Above Elevation;
The UGM shall suspend
motion; The UGM shall limit
the machine to Creep speed
after controls initialized
If the Machine is in Platform
Mode and if the Boom is not
Above Elevation.
2576
25
76
PLATFORM LEVEL PREVENTED - ABOVE ELEVATION
Platform Level Override Cutout = Enabled;
The Platform Level Up or Down switch
input = High;
Footswitch is active.
The UGM shall suspend Plat-
form Level Up and Down
commands;
The UGM shall prohibit Plat-
form Level Up and Down
2577
25
77
DRIVE PREVENTED - START BATTERY CONNECTED
Start battery is connected
Check the battery.
330
33
0
<<< GROUND OUTPUT DRIVER >>>
331
33
1
BRAKE - SHORT TO BATTERY
There is a Short to Battery to the Brake
Valve.
Check Harness for damage.
332
33
2
BRAKE - OPEN CIRCUIT
There is an Open Circuit to the Brake Valve.
Check Harness for damage.
3311
33
11
GROUND ALARM - SHORT TO BATTERY
There is a Short to Battery to the Ground
Alarm.
Ground Alarm equipped vehi-
cles only.
3336
33
36
ALTERNATOR POWER - SHORT TO GROUND
There is a Short to Ground to the Alterna-
tor/ECM.
Check Harness for damage.
3340
33
40
AUX POWER - SHORT TO GROUND
There is a Short to Ground to the Auxiliary
Power Pump Relay.
Check Harness for damage.
3341
33
41
AUX POWER - OPEN CIRCUIT
There is an Open Circuit to the
Auxiliary Power Pump Relay.
Check Harness for damage.
3342
33
42
AUX POWER - SHORT TO BATTERY
There is a Short to Battery to the Auxiliary
Power Pump Relay.
Check Harness for damage.
3346
33
46
ELECTRIC FAN - SHORT TO GROUND
There is a short to ground to the Electric
Fan.
Check Harness for damage.
3347
33
47
ELECTRIC FAN - OPEN CIRCUIT
There is an Open Circuit to the Electric Fan.
Check Harness for damage.
3348
33
48
ELECTRIC FAN - SHORT TO BATTERY
There is a Short to Battery to the Electric
Pump.
Check Harness for damage.
3349
33
49
ELECTRIC PUMP - SHORT TO GROUND
There is a Short to Ground to the Pump
Relay.
Check Harness for damage.
Table 6-3. Help Fault Codes, Displayed Faults, and Descriptions
DTC
Flash Code
Sequence
Fault Message
Fault Description
Check
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