Question about 2005 Peugeot 405
2005 Peugeot 307 Auto. No fan at any speed setting. No hot or cold air.
he three relays are used to switch the fans on and to define the speed. they
are either connected in series (slow) or parallel(fast). If there is any stiff
ness in one motor then in series mode, that one will run slower or not at all
an the other will run fast.
My 405 is petrol and 94 aircon model but I suspect the fan wiring itself to be
similar. looking from the front, the right hand relay switches the fans on
slow, and with that relay still engaged, powering BOTH of the other two will
switch to high speed.
I have read on this NG that there is a wiring splice somewhere under the front
bumper/radiator area that suffers from corrosion which often causes fan
problems. I have never needed to find this. my problem was poor connections to
the relays themselves. the should have elasticaled plastic shrouds to protect
then for the weather; these may have failed and caused a bad connection.
Who ever desiged this location for relays should be shot - VERY slowly!
The later issue of the Haynes manual (blue one, not purple) shows the wiring
diagram for these relays.
Hope This Helps!!! Please Don't Forget to Rate my Response!!! Thanks!!!
Posted on Mar 04, 2009
Hi and welcome to FixYa,
To my understanding of your described problem, it could either be the:
Good luck and thank you for using FixYa.
Posted on Mar 03, 2009
I know what you mean about the fuses these days !! But this
is unlikely to be a fuse problem as there's usually something else that
goes off if a fuse goes as more than one thing takes off one fuse..
Usually on these its the heater blower motor that fails...its not a very good design...and the brushes wear rapidly.
The motor can be accessed from up under th e glove box area...remove the black panel below the box up above where the feet go...and you will see it.
Switch the blower on ( ign on ) and wiggle the wires going to the heater blower..the thick ones...sometimes this gets it going ..it depends if the motor has gone altogether or not. If it doesn't go - you would need to test for power at the wires to be sure...but its usually the motor unit as I say that needs renewal. Its easily changed... three screws and it drops out.
I Sincerely hope I have helped you - Please ask me if you need more help...
Posted on Mar 03, 2009
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Posted on Jan 02, 2017
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