Automotive question

Discussion in 'General Electronics Chat' started by wr8y, Oct 7, 2009.

  1. wr8y

    Thread Starter Active Member

    Sep 16, 2008
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    I know that the auto industry is working on a plan to run our cars with, essentially, a two wire harness. (I am primarily talking about the lighting system here).

    In this system, there will be a power wire and a serial data line. At every light socket in the car, the light will be controlled by a small chip in the socket that gets its instructions from the data line.

    No more wires for stop, turn, tail, etc. Just two wires to virtually every bulb in the car! I have a 2005 Chrysler Crossfire Roadster (the most fun vehicle on the road, but that is beside the point) - the newest vehicle I'v owned and it is NOT wired like this. A co-worker's new car is a 2008 and IT is not wired like this, either.

    MY QUESTION: Do any of you here know of a car that is already wired like this?

    My bet is that it is STILL in the future... what say the contributors here?
     
  2. MikeML

    AAC Fanatic!

    Oct 2, 2009
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    Still in the future.
     
  3. wr8y

    Thread Starter Active Member

    Sep 16, 2008
    232
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    Let it stay there!
     
  4. THE_RB

    AAC Fanatic!

    Feb 11, 2008
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    Lots of the new cars have CAN controllers for many of the car systems. It's pretty much here.
     
  5. Papabravo

    Expert

    Feb 24, 2006
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    There is also CAN's younger sister named LIN. Volvo, Mercedes, and BMW are part of the LIN consortium.
     
  6. bluebrakes

    Active Member

    Oct 17, 2009
    245
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    alot of cars are already like this.

    I used to work at BMW's Quality and Engineering Centre. The car is full of ECU (electronic control units), which speak to each other using data lines such CAN bus, K lines, etc. They are usually daisy chained to one another, so the same wires that would display info the dashboard could also trasmit data to the body control ECU to open the windows. The only real exception is for the airbags where it has it's own unique data lines.

    CAN bus tends to be of the twisted pair type.

    MINI and all of the BMW range use this type of system.

    On the plus side it makes diagnosis much much easier, as everything is logged onto ECU and any problems are logged as fault codes, which can tell anything from what speeds you were doing when you crashed the car to what is causing the misfire on the engine.
     
  7. bluebrakes

    Active Member

    Oct 17, 2009
    245
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    there is still a big wiring harness going around the car to the various components, such as tail lights, fans, windows, etc. Just everything isn't controlled directly by a switch anymore. Operating the window switch sends a signal to the body control unit to make the choice whether the window motor is actuated.
     
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