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40 Troubleshooting
Failure code [CA322] Inj #1 (L/B#1) Open/Short Error
Action code
Failure code
E11
Contents of
• Opening or short circuit was detected in drive circuit of No. 1 injector.
trouble
Action of con-
• Turns the centralized warning lamp and alarm buzzer ON.
troller
Problem that
• Combustion becomes irregular or engine hunts.
appears on
• Engine output lowers.
machine
Related infor-
• Method of reproducing failure code: Start engine.
mation
1 Defective engine controller
2 Defective No. 1 injector
Disconnection in wiring har-
ness
3
(Disconnection in wiring or
defective contact in connec-
tor)
Ground fault in wiring har-
ness
4
Possible causes
(Short circuit with GND cir-
and standard
cuit)
value in normal
state
Short circuit in wiring har-
5
ness
(with another wiring harness)
Defective wiring harness
6
connector
7 Defective engine controller
PC300, 350-8
Trouble
CA322
Cause
Injector #1 (L/B#1) open/short circuit error
(Engine controller system)
Standard value in normal state/Remarks on troubleshooting
If following failure codes are also displayed, trouble is in engine con-
troller: [CA322], [CA324], [CA331]
a
Prepare with starting switch OFF, then carry out troubleshoot-
ing without turning starting switch ON.
C9 (male)
Between (3) – (4)
Between (3) – chassis ground
a
Prepare with starting switch OFF, then carry out troubleshoot-
ing without turning starting switch ON.
Wiring harness between CE01 (female) (45)
– C9 (female) (3)
Wiring harness between CE01 (female) (53)
– C9 (female) (4)
a
Prepare with starting switch OFF, then carry out troubleshoot-
ing without turning starting switch ON.
Wiring harness between CE01 (female) (45)
– C9 (female) (3) and chassis ground
a
Prepare with starting switch OFF, then carry out troubleshoot-
ing without turning starting switch ON.
Between CE01 (female) (45) – each of CE01
(female) pins (With all wiring harness con-
nectors disconnected)
Between CE01 (female) (53) – each of CE01
(female) pins (With all wiring harness con-
nectors disconnected)
Connecting parts between No. 1 injector – 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 troubleshoot-
ing without turning starting switch ON.
CE01 (female)
Between (45) – (53)
Between (45) – chassis ground
SEN02629-03
1
Resistance
Max. 2 z
Min. 100 kz
Resis-
Max. 2 z
tance
Resis-
Max. 2 z
tance
Resis-
Max. 2 z
tance
Resis-
Min.
tance
100 kz
Resis-
Min.
tance
100 kz
Resistance
Max. 2 z
Min. 100 kz
51
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Troubleshooting
