Failure Code [Ca263] Fuel Temp Sensor High Error - Komatsu Galeo PC800-8 Shop Manual

SEN00790-02

Failure code [CA263] Fuel Temp Sensor High Error

Action code Failure code
E15 CA263
Contents of
• High temperature error occurred in fuel temperature sensor circuit.
trouble
Action of
• Fixes fuel temperature value at 90°C and continues operation.
controller
Problem that
appears on
machine
Related • The signal voltage of engine fuel temperature sensor can be checked in monitoring function.
information (Code: 14201 Engine fuel temperature sensor voltage)
Defective fuel temperature
1 sensor
(Internal defect)
Disconnection in wiring
harness
2 (Disconnection in wiring or
Possible causes
defective contact in con-
and standard
nector)
value in normal
state
Ground fault in wiring har-
ness
3
(Short circuit with GND cir-
cuit)
4 Defective engine controller
50
Fuel Temp Sensor High Error
Trouble
(Engine controller system)
Cause Standard value in normal state/Remarks on troubleshooting
aPrepare with starting switch OFF, then carry out troubleshooting with-
out turning starting switch ON.
TFUEL (male)
Between (A) – (B)
aPrepare with starting switch OFF, then carry out troubleshooting with-
out turning starting switch ON.
Wiring harness between ENG (female) (30) –
TFUEL (female) (A)
Wiring harness between ENG (female) (47) –
TFUEL (female) (B)
aPrepare with starting switch OFF, then carry out troubleshooting with-
out turning starting switch ON.
Wiring harness between ENG (female) (30) –
TFUEL (female) (A) and chassis ground
aPrepare with starting switch OFF, then carry out troubleshooting with-
out turning starting switch ON.
ENG (female)
Between (30) – (47)
40 Troubleshooting
Fuel temperature
10 – 100°C
Resis-
tance
Resis-
tance
Resis-
tance
Fuel temperature
10 – 100°C
Resistance
0.6 – 20 kz
Max. 1 z
Max. 1 z
Min. 1 Mz
Resistance
0.6 – 20 kz
PC800, 850-8