Fan

Hi guys, when I turn the ignition in my car, the fan starts working on my own.

There is a problem with the fan, fan relay, cable or socket. The computer energizes but cannot read the fan's speed and status. Naturally, he cannot understand whether he is returning or not.

Yesterday I took it to a mechanic brother, he looked at the sockets, relays and cables, but he couldn't find anything.

The fault code is "fan rationality check" but I never understood what it means.

I looked at it says cooling fan proportion control failure, but as you said I did not understand anything, let's see what the problem will be

The fan will not run, but the brain will fail if it cannot get the required signal from the cable it measures. So there is a problem with the Fan installation. This distress may be in the fan, in the tachometer, and at the other end his brain may be burned. There may also be a lack of contact.

They cannot measure these signals with such a measuring instrument. But it connects to the computer for complete fault detection. It is called return to fan, then see if the computer sees the fan turning. The reason for the experiment is found with the computer.

[QUOTE = ggitaristt] The fan will not run, but the brain will fail if it cannot get the required signal from the cable it measures. So there is a problem with the Fan installation. This distress may be in the fan, in the tachometer, and at the other end his brain may be burned. There may also be a lack of contact.

They cannot measure these signals with such a measuring instrument. But it connects to the computer for complete fault detection. It is called return to fan, then see if the computer sees the fan turning. The reason for the experiment is found with the computer.
[/ QUOTE]

Thanks for the information, let's talk to the mechanic

Thanks for the information, let's talk to the mechanic