Failure Code [Ca428] Water In Fuel Sensor High Error - Komatsu PC210-8 Shop Manual

UEN00241-01

Failure code [CA428] Water in Fuel Sensor High Error

User code Failure code
E15
Contents of
• High voltage was detected in signal circuit of water-in-fuel sensor.
trouble
Action of
• None in particular.
controller
Problem that
appears on
• Water separator monitor does not display normally.
machine
• Condition water-in-fuel sensor signal can be checked with monitoring function. (Code: 18800 Condi-
Related infor-
tion of WIF sensor)
mation
• Method of reproducing failure code: Turn starting switch ON.
Defective water-in-fuel sen-
1
sor
Disconnection in wiring har-
ness (Disconnection in wiring
2
or defective contact in con-
nector)
Possible causes
and standard
Short circuit in wiring har-
value in normal
3 ness (with another wiring
state
harness)
Defective wiring harness
4
connector
5 Defective engine controller
10
Trouble
CA428
Cause
Water-in-fuel sensor high 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.
P47 (female)
Between (1) – (2)
a Prepare with starting switch OFF, then carry out troubleshooting
without turning starting switch ON.
Wiring harness between CE01 (female) (14)
– P47 (male) (1)
Wiring harness between CE01 (female) (47)
– JC02 – P47 (male) (2)
a Prepare with starting switch OFF, then carry out troubleshooting
without turning starting switch ON.
Wiring harness between CE01 (female) (14)
– each of CE01 (female) pins (With all wiring
harness connectors disconnected)
Connecting parts between water-in-fuel sensor – engine wiring har-
ness – 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 (14) – (47)
40 Troubleshooting
1
Resistance
Max. 10 z
Resis-
Max. 10 z
tance
Resis-
Max. 10 z
tance
Resis- Min. 100
tance kz
Resistance
Max. 10 z
PC210, 230, 240-8