Failure Code [Ca386] Sens Supply 1 Volt High Error - Komatsu ecot3 PC300LC-8 Shop Manual

SEN02630-05

Failure code [CA386] Sens Supply 1 Volt High Error

Action code Failure code
E15
Contents of
• High voltage was detected in sensor power supply 1 circuit.
trouble
Action of con-
• Fixes ambient pressure value and continues operation.
troller
Problem that
• Engine output lowers.
appears on
• Engine does not start easily.
machine
Related infor-
• Method of reproducing failure code: Turn starting switch ON.
mation
Possible causes
Defective wiring harness
and standard 1
connector
value in normal
state
2 Defective engine controller
8
Trouble
CA386
Cause
Sensor power supply 1 voltage high error
(Engine controller system)
Standard value in normal state/Remarks on troubleshooting
Connecting parts between ambient pressure sensor – engine 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
If cause 1 is not detected, engine controller may be defective.
(Since trouble is in system, troubleshooting cannot be carried out.)
40 Troubleshooting
1
PC300, 350-8