Failure Code [Ca2185] Throttle Sens. Sup. Volt. High Error - Komatsu PC130-8 Shop Manual

SEN04120-03

Failure code [CA2185] Throttle sens. sup. volt. high error

User code Failure code
E14 CA2185
Contents of
• High voltage was detected in throttle sensor power supply (5 V) circuit.
trouble
Action of
• Sets throttle angle with signal other than throttle sensor signal and continues operation (depending
controller
on each model).
Problem that
appears on
• Engine speed cannot be controlled with fuel control dial.
machine
Related
• Method of reproducing failure code: Turn starting switch ON.
information
Defective fuel control dial
1
(Internal trouble)
Disconnection in wiring har-
ness (Disconnection in wiring
2
or defective contact in con-
nector)
Possible causes
and standard
value in normal
state
Ground fault in wiring har-
3 ness (Short circuit with GND
circuit)
Short circuit in wiring har-
4 ness (with another wiring
harness)
5 Defective engine controller
30
Throttle Sens. sup. volt. high error
Trouble
(Engine controller system)
Cause Standard value in normal state/Remarks on troubleshooting
a Prepare with starting switch OFF, then turn starting switch ON
and carry out troubleshooting.
Disconnect devices
at right in order. If
error code disap-
pears when a device
is disconnected, that
device has a defect
in it.
a Prepare with starting switch OFF, then carry out troubleshoot-
ing without turning starting switch ON.
Wiring harness between CE02 (female) (27)
– P20 (female) (1)
Wiring harness between CE02 (female) (28)
– P20 (female) (3)
a Prepare with starting switch OFF, then carry out troubleshoot-
ing without turning starting switch ON.
Wiring harness between CE02 (female) (27)
– P20 (female) (1) and chassis ground
Wiring harness between CE02 (female) (28)
– P20 (female) (3) and chassis ground
a Prepare with starting switch OFF, then carry out troubleshoot-
ing without turning starting switch ON.
Wiring harness between CE02 (female) (27)
– P20 (female) (1) and between CE02
(female) (28) – P20 (female) (3)
a Prepare with starting switch OFF, then turn starting switch ON
and carry out troubleshooting.
Fuel control dial
CE02
Between (27) – (28)
40 Troubleshooting
1
P20 connector
Resis-
Max. 1 z
tance
Resis-
Max. 1 z
tance
Resis-
Min.1 Mz
tance
Resis-
Min.1 Mz
tance
Resis-
Min.1 Mz
tance
Voltage
4.75 – 5.25 V
PC130-8