Oshkosh Corporation JLG 450AJ, Service And Maintenance Manual

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SECTION 6 - JLG CONTROL SYSTEM
3121659 – JLG Lift – 6-43
FUNCTION PROBLEM -
GROUND ENABLE PERMA-
NENTLY SELECTED 2310 Machine is in Ground Mode;
The Ground Enable switch input = High at Startup The UGM shall prohibit
Engine Start;
The UGM shall not Enable the
Machine Controls initialized
BOOM ANGLE SENSOR – NOT
CALIBRATED 2343 The Boom Angle Sensor has not been calibrated The UGM shall assume the
Boom is Above Elevation;
The UGM shall report a
faulted boom angle of 90
degrees Boom angle sensor calibrated
BOOM ANGLE SENSOR - OUT OF
RANGE HIGH 2344 The UGM detects that Boom Angle Sensor #1 or Boom Angle
Sensor #2 signal voltage > 4.5V. The UGM shall assume the
Boom is Above Elevation;
The UGM shall report a
faulted boom angle of 90
degrees Power Cycled
BOOM ANGLE SENSOR - OUT OF
RANGE LOW 2345 The UGM detects that Boom Angle Sensor #1 or Boom Angle
Sensor #2 signal voltage < 0.5V. The UGM shall assume the
Boom is Above Elevation;
The UGM shall report a
faulted boom angle of 90
degrees Power Cycled
BOOM ANGLE SENSOR – NOT
RESPONDING 2346 The UGM detects the following conditions:
The UGM detects < 1 deg change of Boom Angle
Main Lift Up or Main Lift Down output value ≥ Creep output
value
Main Lift Up or Main Lift Down has been active longer than 5
seconds. The UGM shall assume the
Boom is Above Elevation;
The UGM shall report a
faulted boom angle of 90
degrees Power Cycled
FUNCTION PROBLEM - JIB LIFT
UP PERMANENTLY SELECTED 2370 Machine is in Ground Mode;
MACHINE SETUP > JIB = YES;
The Jib Lift Up switch input = High at Startup The UGM shall prohibit Jib Lift
Up and Down The Jib Lift Up switch input = Low;
Jib Lift Up and Down permitted after con-
trols are initialized
FUNCTION PROBLEM - JIB LIFT
DOWN PERMANENTLY
SELECTED 2371 Machine is in Ground Mode;
MACHINE SETUP > JIB = YES;
The Jib Lift Down switch input = High at Startup The UGM shall prohibit Jib Lift
Up and Down The Jib Lift Down switch input = Low;
Jib Lift Up and Down permitted after con-
trols are initialized
FUNCTION PROBLEM - SWING
LEFT PERMANENTLY SELECTED 2372 Machine is in Ground Mode;
The Swing Left switch input = High at Startup The UGM shall prohibit Swing
Left and Right The Swing Left switch input = Low;
Swing Left and Right permitted after con-
trols are initialized
FUNCTION PROBLEM - SWING
RIGHT PERMANENTLY
SELECTED 2373 Machine is in Ground Mode;
The Swing Right switch input = High at Startup The UGM shall prohibit Swing
Left and Right The Swing Left switch input = Low;
Swing Left and Right permitted after con-
trols are initialized
BOOM ANGLE SENSOR DIS-
AGREEMENT 2396 The UGM detects that Boom Angle Sensor #1 and Boom Angle
Sensor #2 readings disagree ≥ 2.5 deg for longer than 5 sec-
onds;
Do not report if DTC 2343 is active The UGM shall assume the
Boom is Above Elevation and
will report a faulted boom
angle of 90 degrees Power Cycled
FUNCTION PROBLEM – TOWER
LIFT UP PERMANENTLY
SELECTED 23105 Machine is in Ground Mode;
The Tower Lift Up switch input = High at Startup
The UGM shall prohibit Tower
Lift Up and Down The Tower Lift Up switch input = Low;
Tower Lift Up and Down permitted after
controls are initialized
FUNCTION PROBLEM – TOWER
LIFT DOWN PERMANENTLY
SELECTED 23106 Machine is in Ground Mode;
The Tower Lift Down switch input = High at Startup
The UGM shall prohibit Tower
Lift Up and Down The Tower Lift Down switch input = Low;
Tower Lift Up and Down permitted after
controls are initialized
Table 6-5. Diagnostic Trouble Code Chart
Help Message DTC
Fault Condition/Trigger
(For configurable items, fault applies only if
configured. All listed conditions to be met unless
stated otherwise)
Required Control
Response or State
Assignment
Conditions Required for Movement
and/or to Clear Fault