Jump to content
pat90

St205 engine fan

Recommended Posts

Somebody knows If The oem ecu of Toyota switches The engine fan with 12volt? I have a Link ecu but The link doesnt switch The engine fan. We changed The fan wire to another pin(injector6)  in The connector en in The ecu changed settings but with no succes, If we put 12V in The pin The fans start running, I think we must couple a relay to iT to switch. I think iT a little strange for such expensive ecu that this not works Like oem?

 

Share this post


Link to post
Share on other sites
1 hour ago, pat90 said:

I think iT a little strange for such expensive ecu that this not works Like oem?

The fan on the ST205 is not even controlled by the ECU as far as I know?  They normally just have a thermo switch in the radiator. So it should work exactly the same as OEM with the Link ECU.

 

If you want to change your car so that the fan is controlled by the ECU, then you will need to change the relay wiring so that it can be triggered by a lowside (ground) signal.

Share this post


Link to post
Share on other sites

Ok:) but in The ecu I can set al temps when they start running etc, is that only for expansion relays then?

Share this post


Link to post
Share on other sites
16 minutes ago, pat90 said:

Ok:) but in The ecu I can set al temps when they start running etc, is that only for expansion relays then?

Those settings are used by the ECU only if you have an aux output set to "engine fan" and that aux output is connected to the fan relay.  Just like the ECU has settings for VVT, it does not mean all cars have ECU controlled camshafts.

Share this post


Link to post
Share on other sites
5 minutes ago, Adamw said:

Those settings are used by the ECU only if you have an aux output set to "engine fan" and that aux output is connected to the fan relay.  Just like the ECU has settings for VVT, it does not mean all cars have ECU controlled camshafts.

Allright:) The Aux output is 5volts, so I need a relay with 5v and 12v then?

Share this post


Link to post
Share on other sites

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.

Guest
Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.

Loading...

×
×
  • Create New...