Failure Code [Ca435] Eng Oil Press Sw Error - Komatsu ecot3 PC300LC-8 Shop Manual

SEN02630-05

Failure code [CA435] Eng Oil Press Sw Error

Action code Failure code
E15
Contents of
• There is error in signal circuit of engine oil pressure switch.
trouble
Action of
• None in particular.
controller
Problem that
• Engine protection function based on engine oil pressure does not work.
appears on
• Engine oil pressure monitor does not display normally
machine
Related infor-
• Method of reproducing failure code: Turn starting switch ON or start engine.
mation
Defective engine oil pressure
1
switch
Disconnection in wiring har-
ness (Disconnection in wiring
2
or defective contact in con-
nector)
Possible causes
Short circuit in wiring har-
and standard
3 ness (with another wiring
value in normal
harness)
state
Defective wiring harness
4
connector
5 Defective engine controller
Circuit diagram related to engine oil pressure switch
14
Trouble
CA435
Cause
Engine oil pressure switch error
(Engine controller system)
Standard value in normal state/Remarks on troubleshooting
a Prepare with starting switch OFF, then carry out troubleshooting
without turning starting switch ON.
C2 (male)
Between (1) – chassis ground
a Prepare with starting switch OFF, then carry out troubleshooting
without turning starting switch ON.
Wiring harness between CE01 (female) (17)
– C2 (male) (1)
a Prepare with starting switch OFF, then carry out troubleshooting
without turning starting switch ON.
Wiring harness between CE01 (female) (17)
– each of CE01 (female) pins (With all wiring
harness connectors disconnected)
Connecting parts between engine oil pressure switch – engine wir-
ing 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 starting switch OFF, then carry out troubleshooting
without turning starting switch ON.
CE01 (female)
Between (17) – chassis ground
40 Troubleshooting
1
Resistance
Max. 10 z
Resis-
Max. 10 z
tance
Resis- Min. 100
tance kz
Resistance
Max. 10 z
PC300, 350-8