JLG 1350SJP Service Manual - Manual (Page 504)

SECTION 6 - JLG CONTROL SYSTEM
6-128 – JLG Lift – 3121142
Load Moment Pin Troubleshooting
The following Troubleshooting Charts outline diagnostic mea-
sures to be taken to diagnose problems within the Load
Moment Pin portion of the JLG Control System. If necessary,
refer to Section 4 for information concerning replacement of
the Load Moment Pin.
Table 6-10. Load Moment Pin Troubleshooting: Can Communications Lost
STEP FAULT CODE/SYMPTOM REPAIR YES NO
1 6/6 CYLINDER LOAD PIN CAN COMMUNICATIONS LOST Check for correct and tight wire connec-
tions at the deutsch and phoenix con-
nectors of the Load Sensing Pin harness
and perform a continuity check. Go to step 2 Replace harness. (4922826)
2 Check for loose pins in the potting of the
Boom Length & Angle Module J4 con-
nection. Replace the BLAM &
Perform the Boom Sen-
sor calibration process. Go to step 3
3 Inspect the CANbus link ”T” fitting con-
nections at the BLAM & Ground Module.
Are the fittings dry? Go to step 4 Replace ”T” fitting connector.
(4460945)
4 Inspect the CANbus link ”T” fitting con-
nections at the BLAM & Ground Module.
Perform a continuity check. Go to step 5 Replace ”T” fitting connector.
(4460945)
5 Check the J1 and J4 plug connections on
the BLAM, make sure the notched plugs
line up with the plug sockets correctly. Go to step 6 Position plug correctly.
6 Use the Analyzer, scroll – + to the DIAG-
NOSTICS menu, press ENTER, then scroll
to the MOMENT menu, and press ENTER,
check to see i f Actual / Over / Under
moment values are registering on the
screen display. Go to step 6 Replace the load moment pin. &
Perform the Boom Sensor cali-
bration process.
7 If they are, refer to Figure 6-32.,
Moment Chart for comparable values, if
the values are not close, try boom sen-
sor calibration to see if the values come
within the chart. If the problem still exists, verify
steps 1-7 again before contact-
ing the JLG Service Dept. Replace the load moment pin. &
Perform the Boom Sensor cali-
bration process.