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30 Testing and adjusting
Preparation work for
troubleshooting of electrical
system
a When carrying out troubleshooting of an elec-
tric circuit related to the machine monitor,
e n g i n e c o n t r o l l e r, p u m p c o n t r o l l e r, o r
KOMTRAX communication MODEM, expose
the related connectors according to the follow-
ing procedure.
a Disconnect and connect the connectors having
special locking mechanisms according to the
procedure shown below.
1.
Machine monitor
1)
Remove 2 mounting bolts and cover (1).
a One of the mounting bolts is installed
in the cover on the right of the day-
light sensor.
a While removing the mounting bolts,
disconnect connector P31 of the day-
light sensor.
2)
Remove cover (2).
a The cover is fixed with clips. Remove
it by pull it up.
a While removing the cover, discon-
nect connector M04 of the cigarette
lighter.
3)
Remove 1 mounting bolt and duct (3).
PC300, 350-8
4)
Insert or connect troubleshooting T-adapt-
ers in or to connectors CM01, CM02, and
CM03 of machine monitor (4).
1
a Connectors CM02 and CM03 are of
the same type. When returning them,
check the mark plates of the mount-
ing brackets and take care not to
make a wrong connection.
2.
Engine controller
a The engine controller is installed in the left
side of the engine.
1)
Open the engine hood.
2)
Insert or connect troubleshooting T-
adapter in or to connectors ENGINE,
CE02 and CE03 of engine controller (3).
a Connectors are fixed with screw.
Loosen the screws before discon-
necting them.
a When returning the connectors back
to their position, tighten them to the
specified torque.
3
SEN02663-02
Screw: 2.82 Nm {0.288 kgm}
3
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Troubleshooting
