Preparation Work For Troubleshooting Of Electrical System - Komatsu PC210-8 Shop Manual

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 mounting bolts (2) 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 (1).
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).
PC210, 230, 240-8
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
1) Open the engine hood.
a The engine controller is mounted on
the engine (on the counterweight
side).
2) Insert or connect troubleshooting T-adapt-
ers in or to connectors CE01, CE02, and
CE03 of engine controller (5).
a Connectors CE01 and CE02 are fixed
with screws. When disconnecting
them, loosen the screws.
a When returning connectors CE01 and
CE02, tighten the screws to the spec-
ified torque.
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UEN00230-00
Screw: 3 ± 1 Nm {0.3 ± 0.1 kgm}
3