Citroen C4 gran picasso blower not working

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Daz1983
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Citroen C4 gran picasso blower not working

Post by Daz1983 » 09 Oct 2019, 22:38

Hi all,

So I recently declogged my wheel arch drain on my C4 Grand Picasso as it was filling up and of course entering my driver footwell, just before that, my blower sounded like it wasn't controlling itself (weird whizzing noise) then it packed in.

So far I have:
1. Checked all relevant fuses.
2. Checked the blower, looked in a bad state so I replaced it.

However it still doesnt work. Could it be a relay or resistor? The control is powered.

Any ideas would be greatly appreciated.

Thank you

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GiveMeABreak
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Re: Citroen C4 gran picasso blower not working

Post by GiveMeABreak » 10 Oct 2019, 00:25

There's a blower motor control module either mounted on the blower motor itself or separate to it. Pop your VIN up and we'll be able to identify it for you.

Daz1983
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Joined: 09 Oct 2019, 22:27
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Re: Citroen C4 gran picasso blower not working

Post by Daz1983 » 10 Oct 2019, 08:55

Vin is VF7**************[VIN obfuscated, can be read by forum staff]
Last edited by xantia_v6 on 10 Oct 2019, 09:10, edited 1 time in total.
Reason: masking VIN

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GiveMeABreak
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Re: Citroen C4 gran picasso blower not working

Post by GiveMeABreak » 10 Oct 2019, 11:01

Ok, so you can see item (3) is the blower motor control unit resistor. It is part 6441CE and the power will go via this unit to the motor itself.

So if there is power to the resistor unit but not the fan, then it's likely this is your suspect.
daz.PNG
A genuine one from Citroen is £227.62 inc. VAT. There are aftermarket ones from £20 - but be aware a lot of these are of inferior quality and cheap rubbish.

There's a genuine Citroen one here from Eurocarcare for £116.40 inc. VAT:

https://www.eurocarcare.net/heater-cont ... -unit.html

Bobhunn
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Re: Citroen C4 gran picasso blower not working

Post by Bobhunn » 10 Oct 2019, 12:35

Thanks for your help

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Michel
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Re: Citroen C4 gran picasso blower not working

Post by Michel » 10 Oct 2019, 14:00

I had the same issue with my C4 GP, I bought a cheapo one off eBay and it lasted at least the 8 months I had the car, think it cost £23.99.

Daz1983
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Re: Citroen C4 gran picasso blower not working

Post by Daz1983 » 10 Oct 2019, 18:50

So I ran a fluke multi meter down all the cable from the control panel to the blower, turned out that the smaller connector had become damaged due to water ingress. So I replace the wire and connector, hey presto, one working blower!! Cheers for all the help!