Komatsu Galeo PC850-8 User Manual

38 PC800, 850-8
SEN00791-02 40 Troubleshooting
Failure code [CA2185] Throt Sens Sup Volt High Error
Action code Failure code
Trouble
Throt Sens Sup Volt High Error
(Engine controller system)
E14 CA2185
Contents of
trouble
• High voltage error occurred in throttle sensor power supply (5V) circuit.
Action of
controller
• Use a signal other than throttle sensor to set the throttle position for operations.
Problem that
appears on
machine
• Engine speed can not be controlled.
Related
information
• Signal voltage of the fuel control dial can be checked by monitoring function
(Code No. 03000: voltage of fuel control dial).
Possible causes
and standard
value in normal
state
Cause Standard value in normal state/Remarks on troubleshooting
1
Defective fuel control dial
(Internal defect)
aPrepare with starting switch OFF, then turn starting switch ON and
carry out troubleshooting.
Disconnect sensors at
right in order. If no
error code is displayed,
that sensor is defec-
tive.
Fuel control dial P20 connector
2
Disconnection in wiring har-
ness
(Disconnection in wiring or
defective contact in con-
nector)
aPrepare with starting switch OFF, then carry out troubleshooting with-
out turning starting switch ON.
Wiring harness between CE02 (female) (22) –
P20 (female) (1)
Resis-
tance
Max. 1 z
Wiring harness between CE02 (female) (23) –
P20 (female) (3)
Resis-
tance
Max. 1 z
3
Ground fault in wiring har-
ness
(Short circuit with GND cir-
cuit)
aPrepare with starting switch OFF, then carry out troubleshooting with-
out turning starting switch ON.
Wiring harness between CE02 (female) (22) –
P20 (female) (1) and chassis ground
Resis-
tance
Min. 1 Mz
Wiring harness between CE02 (female) (23) –
P20 (female) (3) and chassis ground
Resis-
tance
Min. 1 Mz
4
Short circuit in wiring har-
ness
(with another wiring har-
ness)
aPrepare with starting switch OFF, then carry out troubleshooting with-
out turning starting switch ON.
Wiring harness between CE02 (female) (22) –
P20 (female) (1) and between CE02
(female) (23) – P20 (female) (3)
Resis-
tance
Min. 1 Mz
5 Defective engine controller
aPrepare with starting switch OFF, then turn starting switch ON and
carry out troubleshooting.
CE02 Voltage
Between (22) – (23) 4.75 – 5.25 V

Komatsu Galeo PC850-8 Specifications

General

Brand	Komatsu
Model	Galeo PC850-8
Category	Excavators
Language	English