Question about 2005 Peugeot 405

4 Answers

No fans,no hot air ,no cold air

2005 Peugeot 307 Auto. No fan at any speed setting. No hot or cold air.

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  • tony_wells Mar 04, 2009

    2004 Peugeot 307 auto. no fan at any speed setting. fuse ok. Previous solution said i'd find blower motor under glove compartment but I can only find a square black box which I think is the air bag control. Any other ideas.

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4 Answers

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  • Master
  • 564 Answers

Hi,
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!!!
PREM

Posted on Mar 04, 2009

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  • Master
  • 6,966 Answers

Hi and welcome to FixYa,

To my understanding of your described problem, it could either be the:

  • wiring harness; or
  • fan speed resistor.
Another member of the community, scooblee, has described how to locate, remove and test the resistor here. You may be better of considering a DIY (do-it-yourself). The parts may not be that expensive, but the service fee maybe relatively high as described here.

Good luck and thank you for using FixYa.

Posted on Mar 03, 2009

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  • Master
  • 495 Answers

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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  • Master
  • 8,619 Answers

Hi!
Have you checked for blown fuses in the fuse box. 

Posted on Mar 03, 2009

  • Rylee Smith
    Rylee Smith Mar 03, 2009

    Also check for the heater blower motor.
    The motor can be accessed from up under the 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 these wires gets it going. If it doesn't go - you would need to test for power at the wires. If it still doesn't work then its the motor that needs a replacement. Its can be easily changed, it is attached with three screws.

    Please ask for further clarifications.

    Thanks
    Rylee





  • Rylee Smith
    Rylee Smith Mar 03, 2009

    Please check for the wiring diagrams over here---


    Peugot 307 wiring link 1


    Peugot 307 wiring link 2

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