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Komatsu WA250PZ-6 User Manual

Komatsu WA250PZ-6
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SEN03843-00
40-330 6 WA250, 250PZ-6
330 Troubleshooting by failure code (Display of code), Part 3
Failure code [CA429] Abnormally low level in water sensor
Failure code [CA429] Abnormally low level in water sensor 1
Action code Failure code
Trouble
Abnormally low level in water sensor
(Engine controller system)
E01 CA429
Contents of
trouble
• Low voltage occurred in fuel water sensor
Action of
controller
• None in particular.
Problem that
appears on
machine
• Water separator monitor does not indicate normally.
Related
information
• Method of reproducing failure code: Turn the starting switch ON.
Possible causes
and standard
value in normal
state
Causes Standard value in normal state/Remarks on troubleshooting
1 Defective fuel water sensor
a Prepare with starting switch OFF, then carry out troubleshooting
without turning starting switch ON.
E42 (female) Resistance
Between (1) and (2) Max. 10 z
Between (1) and ground Min. 100 kz
2
Ground fault in wiring har-
ness
(Contact with ground circuit)
a Prepare with starting switch OFF, then carry out troubleshooting
without turning starting switch ON.
Wiring harness between EC1 (female) (14) –
E42 (male) (1) and ground
Resis-
tance
Min.
100 kz
3
Short circuit in wiring har-
ness
(with another wiring harness)
a Prepare with starting switch OFF, then carry out troubleshooting
without turning starting switch ON.
Wiring harness among all pins between EC1
(female) (14) – EC1 (female) (With all con-
nectors of wiring harness disconnected)
Resis-
tance
Min.
100 kz
4
Defective wiring harness
connector
Connecting parts among fuel water sensor, engine wiring harness,
and engine controller are suspected. Inspect them directly.
• Loose connector, broken lock, broken seal
• Corrosive, bent, broken, forced-in, or extended pin
• Humidity in connector, entry of dirt or dust, poor insulation
5 Defective engine controller
a Prepare with starting switch OFF, then carry out troubleshooting
without turning starting switch ON.
EC1 (female) Resistance
Between (14) and (47) Max. 10 z
Between (14) and ground Min. 100 kz

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Komatsu WA250PZ-6 Specifications

General IconGeneral
BrandKomatsu
ModelWA250PZ-6
CategoryConstruction Equipment
LanguageEnglish

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