Question about 2001 Mitsubishi Diamante

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2001 Mitsubishi Diamante, had corrosion formed on battery terminals causing poor connection, cleaned the terminals and reconnected battery. There is now a CONSTANT high-pitched sound in the cab of the car that never stops. I'm assuming this is some sort of security feature misfunctioning?? The sound is made both when the car is running and when it is off, whether the doors are open or closed, it just keeps going. I unlocked my radio using the code provided by my dealership but the ringing noise is unbearable! What could the problem be? Any ideas are greatly appreciated!

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  • msu_clapoint May 04, 2010

    Thanks so much for replying so quickly! Unfortunately neither of these suggestions has any effect... Do you think that there could be some sort of problem with a fuse??

  • msu_clapoint May 04, 2010

    Thanks so much for replying so quickly! Unfortunately neither of these suggestions has any effect... Do you think that there could be some sort of problem with a fuse??

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2 Answers

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  • Mitsubishi Master
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Set the anti theft,with doors and hood closed,leave it 1 minute,and disarm it,if this does not help,remove battery cable(negative) for 20 seconds and put it back on,see if this will stop the problem.

Posted on May 03, 2010

  • Ronny Bennett Sr.
    Ronny Bennett Sr. May 04, 2010

    Try removing the negative battery cable for a split second ,and see if it will solve the problem,but you may have to have the scanner put on the system to see if it can turn the noise off.This sounds like a reset of a module of some sort.

  • Ronny Bennett Sr.
    Ronny Bennett Sr. May 04, 2010

    but you may have to have the scanner put on the system to see if it can turn the noise off.This sounds like a reset of a module of some sort.


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Cool, my dad actually has one of those computers that you connect to the car under the steering wheel. Is the scanner this thing? Sorry, I'm sure this is a totally uneducated question! Thanks in advance.

Posted on May 06, 2010

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