SECTION 5 - JLG CONTROL SYSTEM
5-16 – JLG Lift– 3121166
3 3 STEER RIGHT SHORT TO BATTERY Voltage was detected on the steer right solenoid when the
output driver was commanded off during power-up.
Right Turn INPUT driven Low AND
Right Turn STAT
detected Low during power-up.
Drive & Steer Prevented.
3 3 STEER RIGHT OPEN CIRCUIT Current flow to the steer right solenoid was not detected
during power-up.
Right Turn INPUT driven High (momentarily) AND Right
Turn STAT detected Low during power-up.
Drive & Steer Prevented.
3 3 GROUN D OVERLOAD LA MP SHORT TO BAT-
TERY
While the load sensing system was enabled, voltage was
detected on the ground control box’s overload lamp when
the output driver was commanded off during power-up.
Ground Overload INPUT driven Low AND
Ground Over-
load STAT detected Low during power-up AND
[Machine
Setup’s LOAD set to 1=CUTOUT PLT OR 2=CUTOUT
ALL].
No motion interlocks.
3 3 GROUND OVERLOAD LAMP OPEN CIRCUIT While the Load Sensing System was enabled, current flow
to the ground control box’s overload lamp was not detected
during power-up.
Ground Overload INPUT driven High (momentarily) AND
Ground Overload STAT detected Low during power-up
AND
[Machine Setup’s LOAD set to 1=CUTOUT PLT OR
2=CUTOUT ALL].
No motion interlocks.
3 3 GROUND ALARM SHORT TO BATTERY While enabled, voltage was detected on the ground alarm
when the output driver was commanded off during power-
up.
Ground Alarm INPUT driven Low AND
Ground Alarm STAT
detected Low during power-up AND [Machine Setup’s
GROUND ALARM set to 1=DECENT OR
2=MOTION].
No motion interlocks.
3 3 LEFT BRAKE SHORT TO BATTERY The ground board detected voltage while the left brake was
commanded off.
Check for continuity through
this circuit. Inspect the wiring
for physical damage.
Replace ground board.
3 3 LEFT BRAKE OPEN CIRCUIT Current flow to the left brake solenoid was not detected dur-
ing normal left brake operation.
Check for continuity through
this circuit. Inspect the wiring
for physical damage.
Replace ground board.
3 3 RIGHT BRAKE SHORT TO BATTERY Voltage was detected on the right brake solenoid when the
ground board output was commanded off during power-up.
Check for continuity through
this circuit. Inspect the wiring
for physical damage.
Replace ground board.
3 3 RIGHT BRAKE OPEN CIRCUIT The ground board did not detect current flow to the right
brake during normal operation.
Check for continuity through
this circuit. Inspect the wiring
for physical damage.
Replace ground board.
Table 5-2. Flash Code Listing
FLASH
CODE
HELP MESSAGE CAUSE POSSIBLE RESOLVE
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