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Old 07-04-2019   #1
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Question Replacing climate control fan resistor

I'm trying to replace the auto/climate control heater blower resistor, but cannot figure out how to remove the plug in the attached pictures ! Can someone please help?
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Old 07-04-2019   #2
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Re: Replacing climate control fan resistor

Climate uses electronics to alter fan speed..

There is no resistor
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Old 07-04-2019   #3
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Re: Replacing climate control fan resistor

Are you sure? What's this then? Click image for larger version

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Old 07-04-2019   #4
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Re: Replacing climate control fan resistor

It’s not technically a resistor it’s an electronic control module that varies the fan speed electronically rather than a simple resistor.

The plug in your pictures looks like it might have a plastic tag in the back of the locking tab, usually put in to make sure connections won’t fall apart.

However very hard to see from the pictures exactly what’s there and how to remove it.

I could have a look at mine tomorrow but mine is an evo so there may (although unlikely) be a difference.

I try and take a look tomorrow and report back
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Old 08-04-2019   #5
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Re: Replacing climate control fan resistor

Andy is right (as usual), you have to pinch the little black tab toward the plug in order to release its lock. BTW the picture shows the signal connector the two others are power (red and black) and fan motor (orange and black).

BRs, Bernie

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Old 10-04-2019   #6
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Re: Replacing climate control fan resistor

I took a look on my evo tonight, the opinion remains the same there does appear to be some sort of locking tab on the side of the connector, however my evo has a plastic foot rest in the foot well making access even more difficult and I couldn’t even get a camera in to get a better look
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Old 10-04-2019   #7
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Re: Replacing climate control fan resistor

I haven't yet tried it again, my fingers still hurt from pulling/pinching the little bugger with no success... will try again soon!
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Old 11-04-2019   #8
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Re: Replacing climate control fan resistor

Can't you remove the control unit with the connector still attached ? You'd have a better view on the locking mechanism then ...
Maybe it needs to be pulled out, not pinched (like on VW's) ?

BRs, Bernie

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Old 17-04-2019   #9
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Re: Replacing climate control fan resistor

That did the trick!
Everything seems brand new, no signs of damage in wiring/connectors or the resistor itself.
Ordered replacement part anyway...
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Old 17-04-2019   #10
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Re: Replacing climate control fan resistor

Good luck..
Let us know how it goes
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Old 18-04-2019   #11
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Re: Replacing climate control fan resistor

How did you decide to replace the controller? I hope you've checked the power was ok before ordering the part...

Would you mind to take some pictures of the freed connectors so other forumers could see the locking mechanism?

Thanks in advance, Bernie
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Old 19-04-2019   #12
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Re: Replacing climate control fan resistor

Will do once the replacement part arrives as I've reassembled it for now.
I've done the main control unit calibration process, which gave no errors, so resistor seems like the next thing to try given that the whole system works but fan speed intermittently goes up and down randomly
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Old 19-04-2019   #13
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Re: Replacing climate control fan resistor

How much did you pay for the resistor?

I understand that prices are becoming very reasonable now due to how common climate control has become on the corsa and on a lot of other fiat models, new Ducato vans now use the same climate unit as the punto
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Old 29-04-2019   #14
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Re: Replacing climate control fan resistor

New resistor seems to have fixed the problem!
Got it from eBay using the part number that appears above for 26.95£ same manufacturer as the Fiat supplied part!
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Old 05-05-2019   #15
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Re: Replacing climate control fan resistor

I've been through the same. The connections were melted, so I changed the "resistor" and connections. Now the fan is running, but no air comes out. I tried to detach the whole thing, and it seems that it's running in the wrong direction. I followed the color code of the cables when installing the new connections, so I'm a little confused. Any good ideas?
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