Mi16 405 fan always on

mi16pug

Member
Fellow Frogger
Joined
Mar 4, 2014
Messages
122
Location
Melbourne
The cabin fan is running flat chat all of a sudden when the cars running - the fan speed switch doesn’t make any difference.

Cold/heat switch is working fine.

Has been working fine for 30 years....!

Any ideas?
 
I can’t remember if they run a separate fan speed resistance but that would be the first place to start is it a series 1 or 2 just the other day noticed a new ac control on AliExpress

AU $34.02 46% Off | Air AC Heater Panel Climate Control Assy for Peugeot 405 Samand 71207001861 51586-15180 09092203N 140226279481
https://s.click.aliexpress.com/e/c7zfIclE

They still made these with a few changes in the 2nd and 3rd world so new parts like that are being produced and can be fitted with little modifications.



Garage C5 X7 3008 XTE
Gone but not forgotten 206 GTI 180 306 XR SED 405 MI16 x2 xzara VTS 406 SV 206 XT Berlingo 2011 (best car ever) 306 HDI 307 XSE HDI touring
Fix it right the first time
 
The voltage regulator has gone short circuit against open circuit and qs such its permanently on and so is your fan, time to either replace said transistor or get a new regulator all together, you are too far away for me to be of any help unfortunately as I would pull it out, unsolder transistor, find a replacement and refit and test!
 
Isn't it Screen Shot 2019-02-23 at 7.11.45 PM.pngin the fan assembly?
 
Or very close by if its anything like my S1 205, Peugeot for some stupid reason put it into the airbox up against the firewall where water would collect and crap settle. This will make things hard for the electronics which will be simple given the era it was developed in and manufacturing was well behind the times/
 
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