Failure Code [Ca272] Imv/Pcv1 Open Error - Komatsu PC210-8 Shop Manual

UEN00240-01

Failure code [CA272] IMV/PCV1 Open Error

User code Failure code
E10
Contents of
• Opening was detected in drive circuit of supply pump actuator.
trouble
Action of
• None in particular.
controller
Problem that
• Engine runs but its operation is unstable.
appears on
• Common rail fuel pressure rises above command value.
machine
Related infor-
• Method of reproducing failure code: Turn starting switch ON.
mation
Defective supply pump actu-
1
ator
Disconnection in wiring har-
ness (Disconnection in wiring
2
or defective contact in con-
nector)
Hot short (Short circuit with
3
Possible causes
24V circuit) in wiring harness
and standard
value in normal
state
Short circuit in wiring harness
4
(with another wiring harness)
Defective wiring harness
5
connector
6 Defective engine controller
Circuit diagram related to supply pump actuator (metering unit)
52
Trouble
CA272
Cause
IMV/PCV1 open 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.
CP3 PUMP REGULATOR (male)
Between (1) – (2)
a Prepare with starting switch OFF, then carry out troubleshooting
without turning starting switch ON.
Wiring harness between CE01 (female) (2) –
CP3 PUMP REGULATOR (female) (1)
Wiring harness between CE01 (female) (32)
– CP3 PUMP REGULATOR (female) (2)
a Prepare with starting switch OFF, then turn starting switch ON
and carry out troubleshooting.
Wiring harness between CE01 (female) (2) –
CP3 PUMP REGULATOR (female) (1)
a Prepare with starting switch OFF, then carry out troubleshooting
without turning starting switch ON.
Wiring harness between CE01 (female) (2) –
each of CE01 (female) pins (With all wiring
harness connectors disconnected)
Connecting parts between supply pump actuator – 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
a Prepare with starting switch OFF, then carry out troubleshooting
without turning starting switch ON.
CE01 (female)
Between (2) – (32)
40 Troubleshooting
1
Resistance
Max. 5 z
Resis-
Max. 10 z
tance
Resis-
Max. 10 z
tance
Voltage Max. 3 V
Resis- Min. 100
tance kz
Resistance
Max. 5 z
PC210, 230, 240-8