Operator Manual User Manual
SECTION 6 - GENERAL SPECIFICATIONS AND OPERATOR MAINTENANCE
6-28 – JLG Lift – 3121221
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POWER MODULE FAILURE - INTERNAL
ERROR
A problem has been detected with the
power module.
Cycle machine power on /off a few times if this doesn’t clear the DTC,
refer problem to a qualified JLG mechanic.
9-9 Hardware
DTC FAULT MESSAGE DESCRIPTION CHECK