JLG G12-55A AccuPlace Service Manual - Manual (Page 212)

Electrical System
9.94 G10-55A & G12-55A AccuPlace
ISP –
TEMPERATURE
TOO HIGH –
MACHINE AT
CUTBACK 45401 ISP controller detects oil
temperature greater than
105° C.
N Machine is being run with a high duty cycle
and the hydraulic oil is hotter than
permitted. Operator should reduce
machine duty cycle to cool oil. Machine
boom speed will automatically be derated.
CANBUS
FAILURE –
ENGINE
CONTROLLER 666 UGM does not received CAN
Bus message from engine
controller within 60ms. Y Engine controller not transmitting CAN
Bus messages. Cycle power to see if fault
clears.
With power off, disconnect boom cable at
rear of machine. The resistance between
CAN-H and CAN-L should be
approximately 120ohms. Reconnect
boom cable.
Check continuity of connection near
engine controller and at round Deutsch
connector at the interface of engine pod
and chassis.
Check continuity of each power and CAN
Bus wire going to engine controller from
cab area. Conduct a visual check of the
pin and socket terminations for each wire
to ensure good integrity.
CANBUS
FAILURE –
EXCESSIVE
CANBUS
ERRORS 6613 More than 22 error frames
per second for 4 seconds or
more than 500 Buss Off
conditions since last power
cycle. N CAN Bus faults are excessive.
Degradation and intermittent machine
operation is likely. CAN Bus connections
need to be checked thoroughly. To assist
with the troubleshooting efforts, the
Terminator in the Boom Head can be
removed and inserted at the engine
controller connection. This will cause CAN
loss errors for the boom controllers, but
will enable the machine to be divided to
determine whether this improves the
number of CAN Bus errors.
Help Message
1
DTC Fault Condition
(for configurable items,
fault applies only if
configured)
Fault
Requires
AccuPlace
Reset?
Action(s)