Failure Code [Ca153] Chg Air Temp Sensor High Error - Komatsu Galeo PC800-8 Shop Manual

SEN00790-02

Failure code [CA153] Chg Air Temp Sensor High Error

Action code Failure code
E15 CA153
Contents of
• High temperature error occurred in charge air temperature sensor circuit.
trouble
Action of
• Fixes charge air temperature (air intake temperature) at 70°C and continues operation.
controller
Problem that
appears on • Starting performance of the engine lowers during low temperature.
machine
• The signal voltage of the charge temperature (boost temperature) sensor can be checked with the
Related
monitoring function. (Code: 18501 Boost temperature sensor voltage)
information
• Duplication of failure code: turn ON the starting switch.
Defective charge air tem-
1 perature sensor
(Internal defect)
Disconnection in wiring har-
Possible causes ness
and standard 2 (Disconnection in wiring or
value in normal defective contact in connec-
state tor)
Ground fault in wiring har-
ness
3
(Short circuit with GND cir-
cuit)
4 Defective engine controller
36
Chg Air 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.
TIM (male)
Between (A) – (B)
Between (A) –
chassis ground
aPrepare with starting switch OFF, then carry out troubleshooting with-
out turning starting switch ON.
Wiring harness between ENG (female) (23) –
TIM (female) (A)
Wiring harness between ENG (female) (47) –
TIM (female) (B)
aPrepare with starting switch OFF, then carry out troubleshooting with-
out turning starting switch ON.
Between wiring harness of ENG (female) (23) –
TIM (female) (A) and chassis ground
aPrepare with starting switch OFF, then carry out troubleshooting with-
out turning starting switch ON.
ENG (female)
Between (23) – (47)
40 Troubleshooting
Air intake temperature
10 – 100°C
Whole area
Resis-
Resis-
Resis-
Air intake temperature
10 – 100°C
Resistance
0.5 – 20 kz
Min. 1 Mz
Max. 1 z
tance
Max. 1 z
tance
Min. 1 Mz
tance
Resistance
0.5 – 20 kz
PC800, 850-8