JLG 1100SB Service Manual - Manual (Page 405)

SECTION 6 - JLG CONTROL SYSTEM
3121265 – JLG Lift – 6-121
Table 6-8. Troubleshooting: BLAM Can Communications Lost
STEP ACTION REQUIRED SPEC YES NO
1 Install the Analyzer at the ground station, scroll to
the ”Diagnostics” sub level menu, press ”enter”
then scroll to the ”Versions” menu item press
”enter” and view the screen, reference the Diag-
nostics / Version Chart to assist you in determin-
ing which module has lost it’s communication
link. In some cases the module that shows up
with a question may be defective if all other CAN-
bus links check OK. See Diagnostics / Version Chart See step 2 See step 2
2 Disconnect the BLAM J 1 deutsche plug connec-
tion at the "T” fitting just above the fuel tank. Per-
form an ohms check at the ”A” and ”B” pins of the
"T” fitting. Inspect the shield wire ”C” for possible
short. Approximately 60 ohms. CANbus circuit is
complete.
BLAM suspected
defective. Reconnect plug and go to
step 3
3 Disconnect the Ground Module deutsche plug
from ”T” fitting at the BLAM above the fuel tank.
Perform an ohm check at the ”A” and ”B” sockets
of the deutsche plug. Inspect the shield wire ”C ”
for possible short. Approximately 120 Ohms Reconnect harness and
go to step 4 Repair or replace the
Ground Module to BLAM
harness.
4 Verify the CANbus link signal wires are installed
correctly at the ’T” fitting at the Ground Module. Electrical Schematic Reconnect plug and go to
step 5 Wire per Electrical Sche-
matic
5 Verify the lift cylinder load moment harness has
good continuity and wired correctly at the J4 plug
on the BLAM. Continuity Reconnect plug and go to
step 6 Repair or replace Chassis
Module harness.
6 Disconnect the Chassis Module plug connection
at the battery and perform an ohm check at the
#1 and #2 socket of the deutsche plug. Inspect
the shield wire #3 for possible short. Approximately l 20 Ohms Reconnect plug and stop Inspect harness and con-
nections to the Chassis
Module.