Komatsu 114E-3 Series - E-54 Code [2311;CA2311] IMV (IMA) Solenoid Error

SEN00460-01 40 Troubleshooting
50 114E-3 Series
E-54 Code [2311/CA2311] IMV (IMA) Solenoid Error 1
Error code Failure code
Trouble Abnormality in IMV (IMA) solenoid
2311 CA2311
Contents of
trouble
• Resistance in supply pump actuator is abnormally high or low.
Action of
controller
• None in particular.
Problem that
appears
on machine
• Engine output drops.
Related infor-
mation
• 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 related system If another failure code is indicated, carry out troubleshooting for it.
2
Defective supply pump actu-
ator
a Prepare with starting switch OFF, then carry out troubleshooting
without turning starting switch ON.
CP3 PUMP REGULATOR (Male) Resistance
Between (1) – (2) Max. 5 z
Between (1) – chassis ground Min. 100 kz
3
Disconnection in wiring har-
ness (Disconnection in wiring
or defective contact in con-
nector)
a Prepare with starting switch OFF, then carry out troubleshooting
without turning starting switch ON.
Wiring harness between J1 (female) (2) –
CP3 PUMP REGULATOR (female) (1)
Resis-
tance
Max. 5 z
Wiring harness between J1 (female) (32) –
CP3 PUMP REGULATOR (female) (2)
Resis-
tance
Max. 5 z
4
Ground fault in wiring har-
ness (Short circuit with GND
circuit)
a Prepare with starting switch OFF, then carry out troubleshooting
without turning starting switch ON.
Wiring harness between J1 (female) (2) –
CP3 PUMP REGULATOR (female) (1)
Resis-
tance
Min.
100 kz
5
Defective wiring harness
connector
Connecting parts among supply pump actuator, engine wiring har-
ness, 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 engine controller
a Prepare with starting switch OFF, then carry out troubleshooting
without turning starting switch ON.
J1 (Female) Resistance
Between (2) – (32) Max. 5 z
Between (2) – chassis ground Min. 100 kz