Question about 2003 Mitsubishi Outlander

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Cooling fan The cooling fan runs all the time. Soon as you turn the key on the fan comes on. I have replaced the temp sensor but it did the same thing. Any advice?

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You might have a short in the switch or the circuit board that controls the switch that is connected to the temperature sensor that makes it stay on all of the time. You will need to get it checked at a shop and see what they say about it. They should be able to fix it for a cheap cost. You might need a new switch or the circuit board that controls the switch.

Posted on Nov 04, 2008

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You will need to replace the cooling fan relay, they get get stuck on due to burned contacts, this will cure the problem. Check your owners manual for the location of the fan relay.

Posted on Nov 04, 2008

  • 1 more comment 
  • yadayada
    yadayada Nov 04, 2008

    Forgot to add that the relay is part of the fan speed control module, it is only avail. from the dealer. It's location will not be in the owners manual.

  • yadayada
    yadayada Nov 04, 2008

    I have checked with a source and the relay module is in a black box mounted on the firewall

  • yadayada
    yadayada Nov 04, 2008


    jazzyboy11 Your diag is incorrect by my ref material, no circuit board just a fan control assembly.

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