Failure Code [Ca153] Charge Air Temp. Sensor High Error - Komatsu PC130-8 Shop Manual

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SEN04119-01

Failure code [CA153] Charge air temp. sensor high error

User code
Failure code
E15
Contents of
• High voltage was detected in charge (boost) temperature sensor circuit.
trouble
Action of
• Fixes charge (boost) temperature (intake air temperature) (70°C) and continues operation.
controller
Problem that
appears on
machine
• Signal voltage of charge (boost) temperature sensor can be checked with monitoring function.
Related
(Code: 18501 Boost temperature sensor voltage)
information
• Method of reproducing failure code: Turn starting switch ON.
Defective charge (boost)
1
temperature sensor
(Internal trouble)
Disconnection in wiring
Possible causes
harness
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
32
Trouble
CA153
Cause
Charge air temp. sensor high error
(Engine controller system)
Standard value in normal state/Remarks on troubleshooting
a Prepare with starting switch OFF, then carry out troubleshoot-
ing without turning starting switch ON.
PTIM (male)
Between (2) – (1)
Between (2) –
chassis ground
a Prepare with starting switch OFF, then carry out troubleshoot-
ing without turning starting switch ON.
Wiring harness between ENG1 (female)
(11) – PTIM (female) (2)
Wiring harness between ENG1 (female)
(48) – PTIM (female) (1)
a Prepare with starting switch OFF, then carry out troubleshoot-
ing without turning starting switch ON.
Wiring harness between ENG1 (female)
(11) – PTIM (female) (2) and chassis ground
a Prepare with starting switch OFF, then carry out troubleshoot-
ing without turning starting switch ON.
ENG1 (female)
Between (11) – (48)
40 Troubleshooting
Intake air
Resistance
temperature
0°C
29 – 36 kz
25°C
9 – 11 kz
40°C
4.9 – 5.8 kz
600 – 700 z
100°C
All range
Min. 1 Mz
Resis-
tance
Resis-
tance
Resis-
tance
Intake air
Resistance
temperature
0°C
29 – 36 kz
25°C
9 – 11 kz
40°C
4.9 – 5.8 kz
600 – 700 z
100°C
1
Max. 1 z
Max. 1 z
Min. 1 Mz
PC130-8

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