BLOW-BY HEATER CONTROL [SKYACTIV-D 2.2]

id0140z7028400


Outline

•  Operates the blow-by heater at an extremely low temperature to prevent freezing of the moisture in the blow-by gas in the ventilation pipe and blocking the passage.
•  The PCM operates the blow-by heater by switching the blow-by heater relay on/off.

Block diagram

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Operation

•  The PCM energizes the blow-by heater relay under the following conditions:

Operation condition

Blow-by heater relay energization time

Purpose
At engine start
1 s
Blow-by heater relay sticking prevention
Ambient temperature is less than 0 °C {0 °F}
Until ambient temperature is 0 °C {0 °F} or more
Blow-by passage freezing prevention