Precaution Lights Up While Engine Is Running - Komatsu Galeo PC138US-8 Shop Manual

SEN02467-00
E-7 Precaution lights up while engine is running
Trouble (1) Charge level monitor lights up red.
Related • Signal voltage of alternator can be checked with monitoring function.
information (Code: 04300 Charge voltage)
Defective generation by
1 alternator (when system is
normal)
Disconnection in wiring har-
ness (Disconnection in wiring
2
or defective contact in con-
Possible causes
nector)
and standard
value in normal
state
Ground fault in wiring har-
3 ness (Short circuit with GND
circuit)
4 Defective machine monitor
18
Cause Standard value in normal state/Remarks on troubleshooting
a Prepare with starting switch OFF, then start engine and carry
Between (L) – chas-
a Prepare with starting switch OFF, then carry out troubleshoot-
Wiring harness between CM01 (female)
(11) – J06 – AR (female) (1)
a Prepare with starting switch OFF, then carry out troubleshoot-
Wiring harness between CM01 (female)
(11) – J06 – AR (female) (1), – circuit branch
end
a Prepare with starting switch OFF, then start engine and carry
Between (11) –
chassis ground
out troubleshooting.
AR (male) Engine speed
Middle or higher
sis ground
ing without turning starting switch ON.
ing without turning starting switch ON.
out troubleshooting.
CM02
40 Troubleshooting
Voltage
27.5 – 29.5 V
Resis-
tance
Resis-
tance
Engine Voltage
Running Min. 7.8 V
PC138US, USLC-8
1
Max. 1 z
Min. 1 Mz