PWM cooling fan(s) control using ECM

[flyingv]

Update

When I commanded the fan on in the VCM scanner, the fan would come on and ramp up as I increased the percentage. However, when I would lower the percentage the fan would stop, and not restart until I cycled the ignition off/on.

So I went back into the calibration and switched the hz setting to 100 on a chance.

Now the fan runs perfect. Moving up or down on the fan control works like it should in scanner.

Thanks again to everyone in this thread for all the informative posts!


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