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Discussion and questions related to the course Practical Motorsport Wiring - Club Level
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Hi,
Does anybody here knows or knows someone who knows the PWM frequency of this radiator fan?
I also would need to know if this is a low side or high side signal.
I've wired the yellow wire into a switched 12v and in less than 10s the fan gets full speed. I'm almost certain that I'm missing the right PWM frequency so it is starting in fault mode.
B regards.
I don't know, but I'd try 100 Hz. Let us know how it goes.
Already tried 100hz either low side and high side.
What duty cycle are you running?
I’m trying from 0 to 90%
most pwm fans that we worked before works as follows:
when it gets 12v and doesnt have Any pwm, it gets in emergency mode and goes full Speed.
if it gets 12v and a Low Duty cycle (something from 0 to 15) it also enter in emergency mode and Goes full Speed.
so im trying to varies from 0 to 90 in various frequencies, either low side and high side.
That certainly makes sense. Any chance you can get your hands on a stock vehicle to scope it?
