Komatsu Galeo BR380JG-1E0 Shop Manual page 627

40 Troubleshooting
Defective wiring
8
harness connector
Possible
causes and
standard value
in normal state
Defective engine
9
controller
Circuit diagram related to engine controller power supply
BR380JG-1E0
Cause
Connecting parts between fuse No. 3 – machine wiring harness – engine
controller may be defective. Check them directly.
• Looseness of connector, breakage of lock, or breakage of seal
• Corrosion, bend, breakage, push-in, or expansion of pin
• Moisture or dirt in connector or defective insulation
a Prepare with engine starting switch OFF, then turn engine starting
switch ON and start engine and carry out troubleshooting in each case.
CE03 (male)
Between (3) – (1)
Standard value in normal state/Remarks on troubleshooting
Engine starting switch
ON Min. 24 V
START Min. 12 V
SEN02093-00
Voltage
17