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Resistance Question

  1. Nov 5, 2013 #1
    I am working on air ride system on my Yukon. the computer trouble code says the air exhaust solenoid is bad. I bench tested it and it works fine. I think the problem is the resistance. the resistance is suppost to be between 18 and 45 ohms. it reads right on 18. I think the computer is reading that as bad. what can I do to increase the resistance on this solenoid circuit??

    Any input will be appreciated.
  2. jcsd
  3. Nov 5, 2013 #2

    Simon Bridge

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    Homework Helper

    Welcome to PF;
    You can increase the DC resistance by adding a resistor in series.
    For such a low resistance - a length of wire may do the trick.
  4. Nov 5, 2013 #3


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    It may be that the solenoid is on the way out with internally shorted turns.
    Add a couple of ohms resistance. If that fixes the fault detection then replace the solenoid with a good one.
    Deviation from a manufacturers standard circuit does not usually engender reliability.
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