SEN03842-00
40-320 46 WA250, 250PZ-6
320 Troubleshooting by failure code (Display of code), Part 2
Failure code [CA332] Injector #4 open/short error
Failure code [CA332] Injector #4 open/short error 1
Action code Failure code
Trouble
Injector #4 open/short error
(Engine controller system)
E03 CA332
Contents of
trouble
• There is disconnection or short circuit in drive circuit of injector No. 4.
Action of
controller
• Turns the centralized warning lamp and alarm buzzer ON.
Problem that
appears on
machine
• There is irregular combustion or hunting.
• Engine output drops.
Related
information
• Method of reproducing failure code: Start engine
Possible causes
and standard
value in normal
state
Causes Standard value in normal state/Remarks on troubleshooting
1 Defective injector No. 4
a Prepare with starting switch OFF, then carry out troubleshooting
without turning starting switch ON.
INJ CYL 4 Resistance
Between (1) and (2) Max. 2 z
Between (2) and ground Min. 100 kz
2
Disconnection in wiring har-
ness
(Disconnection or defective
contact in connector)
a Prepare with starting switch OFF, then carry out troubleshooting
without turning starting switch ON.
Wiring harness between EC1 (female) (56) –
INJ CYL 4 (1)
Resis-
tance
Max. 2 z
Wiring harness between EC1 (female) (58) –
INJ CYL 4 (2)
Resis-
tance
Max. 2 z
3
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) (56) –
INJ CYL 4 (1) and ground
Resis-
tance
Max. 2 z
4
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) (56) – EC1 (female) (With all con-
nectors of wiring harness disconnected)
Resis-
tance
Min.
100 kz
Wiring harness among all pins between EC1
(female) (58) – EC1 (female) (With all con-
nectors of wiring harness disconnected)
Resis-
tance
Min.
100 kz
5
Defective wiring harness
connector
Connecting parts among injector No. 4, 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
6
Defective other cylinder
injector or harness
If other failure codes are indicated simultaneously, carry out trouble-
shooting for them.
7 Defective engine controller
a Prepare with starting switch OFF, then carry out troubleshooting
without turning starting switch ON.
EC1 (female) Resistance
Between (56) and (58) Max. 2 z
Between (56) and ground Min. 100 kz
To Next Page
Loading...
Need help?
General
