Failure Code [Ca154] Charge Air Temp. Sensor Low Error; Failure Code [Ca187] Sensor Sup. 2 Volt. Low Error - Komatsu Galeo PC138US-8 Shop Manual

SEN02463-01

Failure code [CA154] Charge air temp. sensor low error

User code Failure code
E15
Contents of
• Low voltage was detected in charge temperature sensor circuit.
trouble
Action of
• Fixes charge temperature (intake air temperature) (70°C) and continues operation.
controller
Problem that
appears on
machine
• Signal voltage of charge 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.
Possible causes
and standard
value in normal
state

Failure code [CA187] Sensor sup. 2 volt. low error

User code Failure code
E15
Contents of
• Low voltage was detected in sensor power supply 2 (5 V) circuit.
trouble
• Operates Bkup speed sensor with signals of Ne speed sensor.
Action of • Sets atmospheric pressure sensor to default value (52.44 kPa {0.53 kg/cm
controller tion.
• Fixes charge pressure sensor value (400 kPa {4.08 kg/cm
Problem that
appears on • Output drops.
machine
Related
• Method of reproducing failure code: Turn starting switch ON.
information
Possible causes
and standard
value in normal
state
24
Trouble
CA154
Cause
Carry out troubleshooting failure code [CA153].
Trouble
CA187
Causes
Carry out troubleshooting for failure code [CA227].
Charge air temp. sensor low error
(Engine controller system)
Standard value in normal state/Remarks on troubleshooting
Sensor sup. 2 volt. low error
(Engine controller system)
Standard value in normal state/Remarks on troubleshooting
40 Troubleshooting
2
}) and continues opera-
2
}) and continues operation.
PC138US, USLC-8
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