JLG 1100SB Service Manual - Manual (Page 410)

SECTION 6 - JLG CONTROL SYSTEM
6-126 – JLG Lift – 3121265
Load Moment Pin Troubleshooting
The following Troubleshooting Charts outline diagnostic
measures 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 COMMUNICA-
TIONS LOST Check for correct and tight wire
connections at the deutsch and
phoenix connectors of the Load
Sensing Pin harness and per-
form a continuity check. Go to step 2 Replace harness.
(4922826)
2 Check for loose pins in the pot-
ting of the Boom Length & Angle
Module J4 connection. Replace the BLAM &
Perform the Boom
Sensor calibration
process. Go to step 3
3 Inspect the CANbus link ”T” fit-
ting connections at the BLAM &
Ground Module. Are the fittings
dry? Go to step 4 Replace ”T” fitting con-
nector. (4460945)
4 Inspect the CANbus link ”T” fit-
ting connections at the BLAM &
Ground Module. Perform a con-
tinuity check. Go to step 5 Replace ”T” fitting con-
nector. (4460945)
5 Check the J1 and J4 plug con-
nections 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 DIAGNOSTICS 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 dis-
play. Go to step 6 Replace the load moment
pin. & Perform the Boom
Sensor calibration pro-
cess.
7 If they are, refer to Figure 6-32.,
Moment Chart for comparable
values, if the values are not
close, try boom sensor calibra-
tion to see if the values come
within the chart. If the problem still exists,
verify steps 1-7 again
before contacting the JLG
Service Dept. Replace the load moment
pin. & Perform the Boom
Sensor calibration pro-
cess.