Cooling Fan Operation
ECM transmits a pulse duty (PWM) signal to IPDM E/R.
IPDM E/R has threshold value to the pulse duty (PWM) signal and operates cooling fan motor with three phases of [HI (high-speed) /LOW (low-speed) /OFF].
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: Less than 30% (OFF<- low-speed) |
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: More than 40% (OFF -> low-speed) |
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: Less than 50% (low-speed<- high-speed) |
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: More than 60% (low-speed -> high-speed) |