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+--- Thread: 307 alternator (/showthread.php?tid=32094)
307 alternator - DeeTurbo - 02-10-2015
Hi,
The alternator on the 307 HDI has a two pin plug on the top where the one on the 306 HDI has a single screw connection that goes to the battery light.
Does anyone know what the second pin does on the 307 alternator?
RE: 307 alternator - pug306driver - 03-10-2015
sorry cant help with that one but see wiring diagram which may help....they are on here ??
RE: 307 alternator - DeeTurbo - 03-10-2015
I've tried looking for a wiring diagram online but haven't found anything yet.
RE: 307 alternator - Magenta Sunset - 03-10-2015
is one pim big n the other little?
RE: 307 alternator - DeeTurbo - 03-10-2015
I think they're both small.
RE: 307 alternator - DeeTurbo - 12-10-2015
Found out last night what the pins are, one should have an L on it and it goes to the battery light. The second goes to the ECU.
Now anyone know what the wire to the ECU does?
RE: 307 alternator - cully - 12-10-2015
ecu possibly controls the regulator which changes the charge rate for the battery under different engine loads/speeds
http://www.autoelectro.co.uk/how-it-works-alternators
RE: 307 alternator - Magenta Sunset - 12-10-2015
according to my Haynes, 1 wire goes to the instrument panel, the other to the battery +ve via the starter motor terminal
RE: 307 alternator - cully - 12-10-2015
i will have a look at the pug drawings when im home
RE: 307 alternator - DeeTurbo - 12-10-2015
The only reason I've been asking about the 307 unit is because I was thinking of fitting one to my 306. The only reason being the 307 one has the overrun pulley.
A smart charge system would be nice if it was a separate module that could be installed but it seems it's built in to the ECU. I guess the system would need to know things like engine load for it to work better not just battery state.
I think I might look into using the 307 unit and put the 306 regulator on it if it fits or look at getting the overrun pulley on the 306 unit.
RE: 307 alternator - Ruan - 20-10-2015
Was thinking about this today.
Try a late 206 HDi alternator, they seem to have an clutched pulley also, as do C8/807s with the 2.0 16v and 2.2 16v engines, although whether the mounting bracket is the same I'm not sure.