Failure Code [Ca271] Imv/Pcv1 Short Error - Komatsu Galeo PC138US-8 Shop Manual

SEN02463-01

Failure code [CA271] IMV/PCV1 short error

User code Failure code
E10
Contents of
• There is short circuit in IMV circuit of supply pump.
trouble
Action of
• None in particular.
controller
Problem that
appears on
machine
Related
• Method of reproducing failure code: Turn starting switch ON.
information
Defective supply pump IMV
1
(Internal trouble)
Ground fault in wiring har-
ness
2
(Short circuit with GND cir-
Possible causes
cuit)
and standard
value in normal
state
Hot short (Short circuit with
3
24V circuit) in wiring harness
4 Defective engine controller
Circuit diagram related
36
Trouble
CA271
Causes
IMV/PCV1 short error
(Engine controller system)
Standard value in normal state/Remarks on troubleshooting
a Prepare with starting switch OFF, then carry out troubleshoot-
ing without turning starting switch ON.
PREG (male)
Between (1) – (2)
Between (1), (2) – chassis
ground
a Prepare with starting switch OFF, then carry out troubleshoot-
ing without turning starting switch ON.
Wiring harness between CE01 (female) (10)
– PREG (female) (2)
Wiring harness between CE01 (female) (14)
– PREG (female) (1)
a Prepare with starting switch OFF, then turn starting switch ON
and carry out troubleshooting.
Wiring harness between CE01 (female) (10)
– PREG (female) (2) and chassis ground
Wiring harness between CE01 (female) (14)
– PREG (female) (1) and chassis ground
a Prepare with starting switch OFF, then carry out troubleshoot-
ing without turning starting switch ON.
CE01 (female)
Between (10) – (14)
Between (10), (14) – chassis
ground
40 Troubleshooting
1
Resistance
2.3 – 5.3 z
Min. 1 Mz
Resis-
Min. 1 Mz
tance
Resis-
Min. 1 Mz
tance
Voltage Max. 1V
Voltage Max. 1V
Resistance
2.3 – 5.3 z
Min. 1 Mz
PC138US, USLC-8