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C4 - DS4 Owners :: Forums :: Citroen C4 Picasso and Grand C4 Picasso (B78) 2013 onward :: C4 Picasso and Grand C4 Picasso (B78) Problems and Issues
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Alternator not charging, smart or dumb alternator?
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Author Post
vexorg   
Sun Sep 22 2024, 05:23pm
Member No: #48843
Joined: Jul 06 2017
Location: Scotland
 My sis-in-law has a 2014 grand picasso, and a load of random errors have appeared.
I checked the battery and it was about 12v, but doesn't increase with engine running.

It's a 1.6 diesel (I think), with turbo right at the front, different to mine that is a 2.0HDi.

Do these have simple alternators that just output all the time, or is it one of these smart ones that can switch the charging off and on. It has a connector with 5 wires going into the alternator, so I'm guessing more than just a simple one that just outputs 14v.

Just trying to rule out BCM before saying she needs a new alternator.

Are there any alternator specific fuses for this car? I dont have the handbook.
vexorg   
Tue Sep 24 2024, 10:50am
Member No: #48843
Joined: Jul 06 2017
Location: Scotland
 Come on picasso owners, someone must know about the alternator to save me hunting for the drawings and tracing it all back.
Ap0qalypto   
Wed Sep 25 2024, 06:52pm
Member No: #52161
Joined: Sep 21 2018
Location: Republic of Serbia
 I can only confirm that on my 2.0hdi from 200o, alternator is charging 14.4v on average
joopajaa   
Fri Oct 24 2025, 02:13pm
Member No: #54739
Joined: Oct 01 2019
Location: FI
 Does anyone know if its possible to replace smart alternator with basic one? 2.0 hdi at6 2014. Car does not have s&s active anyway.

EDIT: what I know, is that you can easily change alternator setting in diagbox. You can select basic alternator etc. You can disable start&stop. Only things need figure out is physical installation - isnthe bracket and distance to belt same - I this they are. Electrical side should be easy, just feed 12v to alternator pin to get 14.4v out. Not sure if some problems with not needed hardware in car: supercondensator and LIN-network on alternator. Maybe no fault codes if you select correct combination of settings in diagbox anyway.
 

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