C4 Picasso heater blower

[Pkilg]

Hi, I have same issue on my 2015mk2 grand picasso. Fan blower constantly on. I can't find the location of the relay on my model.

Any chance you could take a look if I send the VIN?
It's proper doing my nut in!

Mark

Hi,
Did you get your problem sorted? I have the same issue as you.

[3wheeltapper]

hi Marc, l found the above diagram very informative and diagnosed the problem on my 2008 C4 GP as an intermittent feed from relay 7 which feeds the blower relay 8048, l have resolved this by removing the blower relay and inserting a 35A fused link across the terminals, this seems to work perfectly.The blower comes on and off with the ignition and everything seems ok,l would have a look at relay 7 which l think may be faulty(fuse 11 is sound) but l don't know where R7 is located ?

[GiveMeABreak]

Hi

The diagram I posted earlier may be different for your vehicle, as there are so many variants with different heating and A/C options.

I'll need your specific VIN if you'd like me to get a diagram up of the heating circuit - but I suspect R7 may well be an internal relay.

[Madbrushracing]

Hi Marc

If I gave you my vin number could you also post the pictures if they are different from the one's in this thread. My car is a 2015 C4 Grand Picasso and I have the issue that when I turn the car off the cabin heater fan still continues to work so I have to disonect the battery

[the soup thief]

@GiveMeABreak

Hi Marc,
I have the same issue on my 2016 C4GP, with the blower running constantly at full blast regardless of dashboard settings. When I turn off the car however, the blower stops.
I'd be really grateful if you could tell me if the above instructions are likely to apply to mine too
VIN is:
VF7**************[VIN obfuscated, can be read by forum staff]

Thanks a million

[pjohnson]

Hi, Been scouring the internet and couldn't find location of fuse for blower. found it here. Mine had blown. hoping to replace it and connect an earth to chassis to solve problem.
Need to remove the wire looms

and the box to gain access.

[Bograt71]

Hi Niall,

Can you post a pic of where you found the relay in your engine please? I've gone down the same route as everyone else it seems - blower changed (it was faulty - tested it off a separate 12V supply). Bought the resistor pack; no difference and some bizarre voltage readings coming out of it. Last few things to check are the relay. Also, is there a fuse in the engine bay? I bought the Haynes manual - very disappointed in that, as it's missing a huge amount of content. It posted a pick of the fuse in the engine bay, but completely wrong.

Thanks all

Brendan

C4 Grand Picasso 2.0 HDi, 2015

[Bograt71]

And the VIN number is VF7**************[VIN obfuscated, can be read by forum staff]