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Operation condition
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A/C relay non-energization period
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Purpose
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At engine start
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Approx. 4 s
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Improved startability
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At drive-away
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Approx. 3 s
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Improved drive-away performance
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During acceleration (throttle valve opening angle 50% or more)
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Approx. 5 s
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Improved acceleration performance
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When the engine coolant temperature is 113 °C {235 °F}
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Repeatedly turns on and off every 10 s until the engine coolant temperature is less than approx. 110 °C {230 °F}
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Improved engine reliability
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When the engine coolant temperature is 118 °C {245 °F} or more
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Until the engine coolant temperature decreases to less than approx. 114 °C {237 °F}
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Improved engine reliability
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At high engine speed (engine speed 6,600 rpm or more)
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Approx. 1 s
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Improved engine speed stability
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