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Electrical Experts, I need your help - A relay to delay power for 5-10s?
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Valleriani   
Mon Oct 22 2018, 07:07am
Member No: #36322
Joined: Jul 06 2014
Location: Sweden
 2005 Citroen C4 - I have had an issue with the AC blower fan not working, though the actual AC was on (I.E. I can change the fan through the fan controls/etc). I read online that it is apparently the BSM (under bonnet fusebox) which is fairly costly to replace.

Instead of doing so you can bridge two wires to make it work (the two stout wires). as shown here from another thread I found:



I tested this, it actually works fine and the AC works again. I am worried however that doing this with a fuse isn't enough and' you'd need a relay/something to delay it from starting on the go.

Eventually I'll get the whole fuse system replaced but I don't have the coin for that right now.

Thanks!
rusky   
Mon Oct 22 2018, 02:19pm
Member No: #27768
Joined: Oct 13 2012
Location: Hove
 I would be careful about shorting those:
Pin 1 - Output +APC (built-in systems interface)
Pin 2 - Output Air conditioning motor control
BigJohnD   
Tue Oct 23 2018, 04:19am

Member No: #82
Joined: Jan 22 2007
Location: Hoylake
 - Click Here - You may need a relay to power the device as this has a small power limit.
Valleriani   
Tue Oct 23 2018, 03:07pm
Member No: #36322
Joined: Jul 06 2014
Location: Sweden
 Thanks both.

I'm actually going to go get a BSM from a junked car and try to see if I can replace it or get a shop to replace it instead of this. It does work but it's just a temp hack
zcream   
Mon Dec 23 2024, 08:29am
Member No: #60306
Joined: Dec 09 2022
Location: NSW, Australia
Valleriani wrote ...

2005 Citroen C4 - I have had an issue with the AC blower fan not working, though the actual AC was on (I.E. I can change the fan through the fan controls/etc). I read online that it is apparently the BSM (under bonnet fusebox) which is fairly costly to replace.

Instead of doing so you can bridge two wires to make it work (the two stout wires). as shown here from another thread I found:



I tested this, it actually works fine and the AC works again.

Thanks!


Would you still recommend this hack ? I've got a 30A inline fuse and am going to try it out next week.
 

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