Komatsu Galeo BR380JG-1E0 Shop Manual page 703

40 Troubleshooting
Disconnection in wiring
harness (Disconnec-
5 tion in wiring harness
or defective contact in
connector)
Possible
causes and
Short circuit with chas-
standard value
sis ground in wiring
in normal state
6
harness (Contact with
ground circuit)
Hot short in wiring har-
7 ness
(Contact with 24 V)
Relative electrical circuit diagram
BR380JG-1E0
Cause
a Prepare with starting switch OFF, then carry out troubleshooting without
turning starting switch ON.
Wiring harness between B28 (10) – B13 (female)
(4)
Wiring harness between B13 (female) (3) – C01
(female) (11)
a Prepare with starting switch OFF (Keep the conveyor lower), then carry
out troubleshooting without turning starting switch ON.
Wiring harness between B28 (10) – B13 (female)
(4) – circuit branch end
Wiring harness between B13 (female) (3) – C01
(female) (11) and chassis ground
Wiring harness between S21 (female) (B) – A04
– C02 (female) (13) and chassis ground
Wiring harness between S22 (female) (B) – A04
– C01 (female) (20) and chassis ground
a Prepare with starting switch OFF (Turn mode selector switch to work
position), then turn starting switch ON and carry out troubleshooting.
Wiring harness between B13 (female) (2) – C01
(female) (5) – circuit branch end
Standard value in normal state/Remarks on troubleshooting
SEN02095-00
Resistance Max. 1 z
Resistance Max. 1 z
Resistance Min. 1 Mz
Resistance Min. 1 Mz
Resistance Min. 1 Mz
Resistance Min. 1 Mz
Voltage Max. 1 V
15