307 SW 1.6 HDi cooling fan goes until battery is dead

Hi,
This has happened a number of times over the last couple of weeks on my 2004
307 sw. Today I drove 10 miles and when I stopped I noticed that the cooling
fan was going at full speed when I have turned the ignition off. I thought
it would stop after a few moments but it only stopped when it had worn the
battery completely down! The car wasn't running hot (or cold). I have tried
turning the climate control on and off. I also restarted the car and turned
it off again but it kept going. I then had to jump start the car and drove
100 miles. When I arrived I switched the ignition off and the fan was not
on. Could this be a corroded sensor? Where is the relevant sensor on this
car? Should it stop if I unplug it during one of these episodes?
Any help would be great.
Thanks
Lenny

On Feb 25, 10:29 am, "Lenny" <le....DeleteThis@thetakeout.com> wrote:
> Hi,
> This has happened a number of times over the last couple of weeks on my 2004
> 307 sw. Today I drove 10 miles and when I stopped I noticed that the cooling
> fan was going at full speed when I have turned the ignition off. I thought
> it would stop after a few moments but it only stopped when it had worn the
> battery completely down! The car wasn't running hot (or cold). I have tried
> turning the climate control on and off. I also restarted the car and turned
> it off again but it kept going. I then had to jump start the car and drove
> 100 miles. When I arrived I switched the ignition off and the fan was not
> on. Could this be a corroded sensor? Where is the relevant sensor on this
> car? Should it stop if I unplug it during one of these episodes?
> Any help would be great.
> Thanks
> Lenny

Could be a stuck relay. Not sure where it is located but i am sure
you could follow the wiring.