Komatsu ecot3 PC300LC-8 Shop Manual page 699

40 Troubleshooting
Ground fault in wiring har-
ness
5
(Short circuit with GND cir-
Possible causes
cuit)
and standard
value in normal
state
6 Defective pump controller
PC300, 350-8
Cause Standard value in normal state/Remarks on troubleshooting
a
Wiring harness between CP02 (female)
(101) – D01 – J02 – H15 – S04 (male) (3)
and chassis ground
Wiring harness between V05 (female) (2) –
H15 – S04 (male) (4) and chassis ground
a
CP02 (female)
Between (101) –
chassis ground
Prepare with starting switch OFF, then carry out troubleshoot-
ing without turning starting switch ON.
Prepare with starting switch OFF, then carry out troubleshoot-
ing without turning starting switch ON.
Disconnect D01 and
connect pins (3) and
(7) on female side
directly.
SEN02631-02
Resis-
Min. 1 Mz
tance
Resis-
Min. 1 Mz
tance
Resistance
20 – 60 z
23