JLG 1200SJP Service Maintenance Manual page 494

SECTION 6 - JLG CONTROL SYSTEM
STEP ACTION REQUIRED
10 Disconnect the Chassis Module connection at the right side of
the battery at the turntable lock pin. Perform an ohms check
at the #1 and #2 connections of the plug. Inspect shield wire
#3 for possible short.
11 Disconnect the Chassis Module connection below the swivel
under the machine. Perform an ohms check at the #1 and #2
connections of the plug that is routed to the Chassis Module.
Inspect shield wire #3 for possible short.
12 Make sure the Chassis Module CANbus link wires are installed
correctly at the plug near the battery, the plug below the
swivel and 31 plug at the Chassis Module.
6-118
Table 6-7. Troubleshooting: Platform Can Communications Lost
Approximately 120 ohms
Approximately 120 ohms
Electrical Schematic
– JLG Lift –
SPEC
Reconnect plug and go to step
11
Reconnect plug and go to step
12
Stop
YES NO
Inspect the harness from the
slip ring connections at the top
and bottom plug connections of
the swivel. Assure proper conti-
nuity and correct wiring per
Electrical Schematic.
Inspect the harness from the
bottom of the swivel into the
Chassis Module. Assure proper
continuity and wiring r sche-
matic 1870149A.
Replace the Chassis Module.
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