Service Manual Manual

SECTION 6 - JLG CONTROL SYSTEM
6-92 – JLG Lift – 3121171
8441 84 41 TOWER CYLINDER ANGLE MOVEMENT WITHOUT COM-
MAND
The Tower Cylinder Angle
Sensor is changing without
a tower lift command.
- Envelope Control equipped
vehicles only.
-1250
8442 84 42 MAIN TRANSPORT ANGLE SWITCH FAILED The Main Boom Angle
Switch is bad.
- Envelope Control equipped
vehicles only.
-1250
8443 84 43 TWR TRANSPORT SWITCH DISAGREEMENT There is a disagreement
between the Tower Boom
Length Switch and the
Tower Length Sensor.
- Envelope Control equipped
vehicles only.
-1250
8444 84 44 TRANSPORT DUAL CAPACITY SWITCHES BAD Both the Dual Capacity
Switch and the Transport
Switch are bad.
- Envelope Control equipped
vehicles only.
-1250
8445 84 45 TRANSPORT DUAL CAPACITY BAD TRANSITION The Dual Capacity Switch
and the Transport Switch
changed state out of order.
- Envelope Control equipped
vehicles only.
-1250
8446 84 46 MAIN TRANSPORT LENGTH SWITCH DISAGREEMENT There is a disagreement
between the Main Boom
Transport Length
Switches.
- Envelope Control equipped
vehicles only.
-1250
8447 84 47 MAIN DUAL CAPACITY LENGTH SWITCH DISAGREE-
MENT
There is a disagreement
between the Main Boom
Dual Capacity Length
Switches.
- Envelope Control equipped
vehicles only.
-1250
8448 84 48 MAIN TRANSPORT ANGLE SWITCH/SENSOR DIS-
AGREEMENT
There is a disagreement
between the Main Boom
Angle Switch and the Main
Boom Angle Sensor.
- Envelope Control equipped
vehicles only.
-1250
8449 84 49 TOWER CYLINDER ANGLE SWITCH/SENSOR DIS-
AGREEMENT
There is a disagreement
between the Tower Boom
Angle Switch and the
Tower Cylinder Angle Sen-
sor.
- Envelope Control equipped
vehicles only.
-1250
8450 84 50 NEW MAIN ANGLE SENSOR #1 DETECTED A new Main Angle Sensor 1
has been detected.
-1250
8451 84 51 NEW MAIN ANGLE SENSOR #2 DETECTED A new Main Angle Sensor 2
has been detected.
-1250
8452 84 52 TOWER LENGTH SWITCH/SENSOR DISAGREEMENT There is a disagreement
between the Tower Length
Switch and the Tower
Length Sensor.
- Envelope Control equipped
vehicles only.
-1250
8453 84 53 WRONG MAIN TELE RESPONSE Main telescope is moving
in the opposite direction of
the command.
- Envelope Control equipped
vehicles only.
-1250
8454 84 54 WRONG MAIN LIFT RESPONSE Main lift is moving in the
opposite direction of the
command.
- Envelope Control equipped
vehicles only.
-1250
Table 6-6. Diagnostic Trouble Code Chart
DTC
Flash
Code
Sequence
Fault Message Fault Description Check