JLG 450A_AJ Series II Service Manual User Manual

Page 353

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SECTION 6 - JLG CONTROL SYSTEM

3121290

– JLG Lift –

6-43

2/5

(Continued)

DISCONNECT ANALYZER AND
CYCLE EMS TO PERFORM BOOM
RETRIEVAL

Ground module needs to use RS232 backup communications link to
BLAM module but an analyzer is connected. Remove analyzer and
cycle power

FUNCTIONS LOCKED OUT - PLAT-
FORM MODULE SOFTWARE VER-
SION IMPROPER

Major version of platform module does not match major version of
ground module

FUNCTIONS LOCKED OUT - CHAS-
SIS MODULE SOFTWARE VERSION
IMPROPER

Major version of chassis module does not match major version of
ground module

FUNCTIONS LOCKED OUT - BLAM
MODULE SOFTWARE VERSION
IMPROPER

Major version of BLAM module does not match major version of
ground module

2/7

Flash code 2/7 indicates that accelerator input is faulty.
NOT REQUIRED

2/8

Flash code 2/8 indicates a problem with a hydraulic filter. Not
reported during 2 second power-up.

RETURN FILTER BYPASSED

Hydraulic return filter clogged

charge pump filter bypassed

Charge pump filter clogged

3/1

Flash code 3/1 indicates a contactor did not close when ener-
gized.
NOT REQUIRED

3/2

Flash code 3/2 indicates a contactor did not open when ener-
gized.
NOT REQUIRED

3/3

Flash code 3/3 indicates a driver problem. All driver faults are
detected in a similar manner. Open circuit faults are detected
when analog feedback reads too high and output is com-
manded off. Short to ground is detected when analog feedback
reads low and output is commanded on. Short to battery is
detected when analog feedback reads Vbat and output is

commanded off. Not reported during 2 second power-up. An
EMS cycle is required.

RIGHT FORWARD DRIVE PUMP
SHORT TO GROUND