Failure Code [Ca2185] Throttle Sens. Sup. Volt. High Error - Komatsu Galeo PC138US-8 Shop Manual

SEN02464-01

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
28
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
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-
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-
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-
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
ing without turning starting switch ON.
ing without turning starting switch ON.
ing without turning starting switch ON.
and carry out troubleshooting.
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
PC138US, USLC-8