406 Intelligent Slave Unit

Discussion in 'Peugeot 406' started by Dave Lake, Mar 20, 2005.

  1. Dave Lake

    Dave Lake Guest

    I have a problem with the outside temperature system, the indicator on the
    multi function display is reading much too high, often over scale, ie 2
    dashes. I think the sensor is probably ok, it is about 500 ohms changing
    with temperature.

    I am trying to trace the leads back to some unit, I have a Peugeot circuit
    diagram showing the leads going to the "Intelligent Slave Unit", please does
    anybody know where this slave unit is and what does it look like.

    Regards Dave Lake
     
    Dave Lake, Mar 20, 2005
    #1
  2. Hi Dave, did you get anywhere with this problem? I've just got the same
    thing. Cheers, Mick Dewsbury
     
    mike Dewsbury via CarKB.com, Apr 5, 2005
    #2
  3. Dave Lake

    davelake Guest

    Mick: Thanks for the message - I haven't been able to find the
    "intelligent slave unit" yet, my Peugeot drawing shows the leads from
    the sensor going there - I would like to trace it through to see if
    there was a poor connection somewhere. What I have done is I
    disconnected the sensor at the wing mirror connector and measured the
    resistance of the sensor, this was about 500 ohms varying about +- 50
    ohms with cold/heat. I thought that might be ok but now I am less
    sure. At that connector I then "replaced" the sensor with a variable
    resistor and I found I needed 4500 ohm to 3000 ohm to get a reading on
    the display unit of 55 to 70 deg F - so now I think the sensor may be
    faulty, too low in resistance. No doubt the best thing to do is change
    the sensor.
    There is a mailing on 6 April from another? Mick with exactly the same
    problem, Nigel replied that "it was always the sensor"
    I would let you have a copy of my Peugeot drawing if you would like, I
    find it a bit hard to understand! Phone 01553671065
     
    davelake, Apr 8, 2005
    #3
  4. Dave Lake

    davelake Guest

    Mick: Thanks for the message - I haven't been able to find the
    "intelligent slave unit" yet, my Peugeot drawing shows the leads from
    the sensor going there - I would like to trace it through to see if
    there was a poor connection somewhere. What I have done is I
    disconnected the sensor at the wing mirror connector and measured the
    resistance of the sensor, this was about 500 ohms varying about +- 50
    ohms with cold/heat. I thought that might be ok but now I am less
    sure. At that connector I then "replaced" the sensor with a variable
    resistor and I found I needed 4500 ohm to 3000 ohm to get a reading on
    the display unit of 55 to 70 deg F - so now I think the sensor may be
    faulty, too low in resistance. No doubt the best thing to do is change
    the sensor.
    There is a mailing on 6 April from another? Mick with exactly the same
    problem, Nigel replied that "it was always the sensor"
    I would let you have a copy of my Peugeot drawing if you would like, I
    find it a bit hard to understand! Phone 01553671065
     
    davelake, Apr 8, 2005
    #4
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