COOLANT CONTROL VALVE CONTROL [SKYACTIV-D 1.5]SM2760082
COOLANT CONTROL VALVE CONTROL [SKYACTIV-D 1.5]
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Outline
• Depending on the engine operation conditions, the PCM controls the coolant control valve opening angle so that the appropriate amount of engine coolant can be sent to the appropriate coolant passage at the appropriate timing.
Block Diagram
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Operation
• The PCM controls the coolant control valve opening angle as follows:
Operation conditions
Engine coolant passage from intake shutter valve
• Normal circulation flow
Engine coolant passage from heater core
• Engine coolant temperature
78 °C {172 °F}: Fully open
Engine coolant passage from radiator
• Engine coolant temperature
105 °C {221 °F}: Fully open
Engine coolant passage from ATF oil cooler
• Engine coolant temperature
85 °C {185 °F} and ATF temperature 90 °C {194 °F}: Fully open
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• After engine warm-up, the coolant control valve adjusts to the appropriate opening angle to stabilize the engine coolant temperature.