low speed fan not working

[rio95]

I discovered today that I don't think my low speed fan is coming on. My tune has the set points changed. I think high is a like 194 and low I'm can't remember but I think it's like 185 or so. Here is the stupid question. Does the low speed fan typically run all the time when the car is up to temp? My fan would come on around 194 and it feels like the high speed. I turned the high speed fan switch on as well and the fan speed seemed the same so I assume it was on high. It would stay on for about 30-60 seconds and then turn off completely even though the temp was still around 190 or so.

 

[HISSIN50]

I'm a little confused, but....

When low is active, Pin 12 on the CCRM shows 12V. So if this is happening but the fan is not on, there's an issue.

If low is on and you turn high on, the fan speed will not change hardly at all, but the current-draw increases (this is not good for the fan motor).

And with your fan setting, low probably never shuts off during a hot day unless you're on the highway.

I don't know what happened to the wiki. Those links were useful IMHO with diagnosing this stuff.