Service Manual User guide

SECTION 6 - JLG CONTROL SYSTEM
6-122 – JLG Lift – 3121262
844 84 4 BOOM LENGTH SENSOR NOT DETECTING LENGTH
CHANGE
The Boom Length Sensor
is not changing during a
boom telescope com-
mand.
- Envelope Control equipped
vehicles only.
845 84 5 BOOM LENGTH SENSOR - OUT OF RANGE HIGH Boom Length Sensor out of
range high.
- Envelope Control equipped
vehicles only.
846 84 6 BOOM LENGTH SENSOR - OUT OF RANGE LOW Boom Length Sensor out of
range low.
- Envelope Control equipped
vehicles only.
847 84 7 BOOM LENGTH SENSOR - VALUE OUT OF RANGE HIGH Boom Length out of range
high.
- Envelope Control equipped
vehicles only.
848 84 8 BOOM LENGTH SENSOR - VALUE OUT OF RANGE LOW Boom Length out of range
low.
- Envelope Control equipped
vehicles only.
849 84 9 BOOM ANGLE SENSOR #1 - COMMUNICATIONS FAULT Boom Angle Sensor #1
communications lost.
- Envelope Control equipped
vehicles only.
8410 84 10 BOOM ANGLE SENSOR #2 - COMMUNICATIONS FAULT Boom Angle Sensor #2
communications lost.
- Envelope Control equipped
vehicles only.
8411 84 11 BOOM ANGLE SENSOR #1 - INVALID ANGLE Boom Angle Sensor #1 out
of range.
- Envelope Control equipped
vehicles only.
8412 84 12 BOOM ANGLE SENSOR #2 - INVALID ANGLE Boom Angle Sensor #2 out
of range.
- Envelope Control equipped
vehicles only.
8413 84 13 WRONG TELESCOPE RESPONSE Boom telescope is moving
in the opposite direction of
the command.
- Envelope Control equipped
vehicles only.
8414 84 14 WRONG LIFT RESPONSE Boom lift is moving in the
opposite direction of the
command.
- Envelope Control equipped
vehicles only.
8479 84 79 MAIN CYLINDER ANGLE SENSOR #1 - OUT OF RANGE
LOW
8480 84 80 MAIN CYLINDER ANGLE SENSOR #1 - OUT OF RANGE
HIGH
8492 84 92 MAIN CYLINDER ANGLE SENSOR #2 - OUT OF RANGE
LOW
8493 84 93 MAIN CYLINDER ANGLE SENSOR #2 - OUT OF RANGE
HIGH
8494 84 94 MAIN CYLINDER ANGLE SENSORS - DISAGREEMENT
8495 84 95 TURN TABLE SENSOR #1 - FREQUENCY OUT OF RANGE
LOW
8496 84 96 TURN TABLE SENSOR #1 - FREQUENCY OUT OF RANGE
HIGH
8497 84 97 TURN TABLE SENSOR #2 - FREQUENCY OUT OF RANGE
LOW
8498 84 98 TURN TABLE SENSOR #2 - FREQUENCY OUT OF RANGE
HIGH
8499 84 99 CHASSIS TURN TABLE SENSORS - DISAGREEMENT
84100 84 100 CHASSIS TURN TABLE SENSORS AND DRIVE ORIENTA-
TION SWITCH - DISAGREEMENT
84101 84 101 CHASSIS TURN TABLE SENSORS - NOT CALIBRATED
Table 6-8. Diagnostic Trouble Code Chart
DTC
Flash
Code
Sequence
Fault Message Fault Description Check