C4 Picasso b78 wiring diagram needed

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Lee1970
Posts: 3
Joined: 28 Sep 2025, 16:53

C4 Picasso b78 wiring diagram needed

Unread post by Lee1970 »

Hi all new to the group.
I’ve got a clutch pedal switch fault p0908 & want to try & check the wiring before replacing the master cylinder.
But struggling to find a wiring diagram.
It’s a 2014 1.6 diesel.

I did read somewhere that the 5v ref comes off the app ?
Can anyone point me in the right direction please.

Thanks
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mickthemaverick
Moderating Team
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Joined: 11 May 2019, 17:56
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Re: C4 Picasso b78 wiring diagram needed

Unread post by mickthemaverick »

Unfortunately we do not currently have access to the Stellantis wiring diagram database but it is possible that a member with their own access will be able to help you out. :)
I used to be indecisive, now I'm not so sure!
I used to ride on two wheels, but now I need all four!
RichardW
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Joined: 07 Aug 2002, 17:12
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Re: C4 Picasso b78 wiring diagram needed

Unread post by RichardW »

I think it's a position sensor rather than a switch. What does the error code say, and what dose the live data say? You could try unplugging it to see if the code goes permanent or to a different circuit code which will imply that the wiring is OK. The master cylinders on these are a know weak point...
Richard W