Service Manual Manual
SECTION 6 - JLG CONTROL SYSTEM
6-106 – JLG Lift – 3121142
9921 99 21 GROUND MODULE FAILURE - HIGH SIDE DRIVER CUTOUT FAULTY The Ground Module has
reported that its high side driver
cutout failed.
9922 99 22 PLATFORM MODULE FAILURE - HWFS CODE 1 The Platform Module has
reported that the V(Low) FET
has failed.
9923 99 23 GROUND MODULE FAILURE - HWFS CODE 1 The Ground Module has
reported that the V(Low) FET
has failed.
9925 99 25 FUNCTIONS LOCKED OUT - CHASSIS MODULE SOFTWARE VERSION
IMPROPER
The Chassis Module software
version is not compatible with
the rest of the system.
9926 99 26 FUNCTIONS LOCKED OUT - BLAM MODULE SOFTWARE VERSION IMPROPER The BLAM software version is
not compatible with the rest of
the system.
9927 99 27 GROUND MODULE CONSTANT DATA UPDATE REQUIRED The Ground Module constant
data requires an updated.
9928 99 28 ENVELOPE CONTROL DISABLED Envelope Control has been dis-
abled by the user from Access
Level 0.
- Envelope Control equipped vehi-
cles only.
9929 99 29 MOMENT CONTROL DISABLED Moment Control has been dis-
abled by the user from Access
Level 0.
- Envelope Control equipped vehi-
cles only.
9930 99 30 STEER SENSORS NOT CALIBRATED The Steer Sensors have not been
calibrated.
- Chassis Module equipped vehi-
cles only.
9931 99 31 BOOM SENSORS NOT CALIBRATED The Boom Sensors have not
been calibrated.
- BLAM equipped vehicles only.
9932 99 32 LIFT CRACKPOINTS NOT CALIBRATED The Lift Valves have not been
calibrated.
- 1200S and 1350S only.
9933 99 33 TELESCOPE CRACKPOINTS NOT CALIBRATED The Telescope Valves have not
been calibrated.
- 1200S and 1350S only.
9934 99 34 DRIVE CRACKPOINTS NOT CALIBRATED The Drive Valves have not been
calibrated.
- 1200S and 1350S only.
9935 99 35 BLAM SENSOR SUPPLY OUT OF RANGE HIGH The Boom Angle Sensors supply
voltage is high.
- BLAM equipped vehicles only.
9936 99 36 BLAM SENSOR SUPPLY OUT OF RANGE LOW The Boom Angle Sensors supply
voltage is low.
- BLAM equipped vehicles only.
9937 99 37 LENGTH SENSOR REF VOLTAGE HIGH The Boom Length Sensors sup-
ply voltage is high.
9938 99 38 LENGTH SENSOR REF VOLTAGE LOW The Boom Length Sensors sup-
ply voltage is low.
9939 99 39 BLAM HIGH RES A/D FAILURE The BLAM high resolution ana-
log to digital converter has
failed.
- BLAM equipped vehicles only.
9940 99 40 CHASSIS SENSOR SUPPLY OUT OF RANGE HIGH The Chassis Sensors supply volt-
age is high.
Table 6-6. Diagnostic Trouble Code Chart
DTC
Flash
Code
Sequence
Fault Message Fault Description Check