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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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Accelerating from a standstill
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Approx. 2 s
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Improved acceleration from standstill
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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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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. 107°C {224°F}.
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Improved engine reliability
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Engine coolant temperature is 117°C {242°F} or more
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Until the engine coolant temperature decreases to less than approx. 110°C {230°F}.
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Improved engine reliability
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At high engine speed (engine speed 5,600 or more)
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Until engine speed decreases to less than 5,600 rpm
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Improved A/C compressor reliability
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