Question about 1998 Mazda 626

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Electrical fault I was fitting driving lights to my 98 GF 626 and whilst fiddling with the fuse box to pick up a power source I heard a series of clicking noises like a relay or something operating,then it stopped, leaving me with no power at that particular junction and no central locking, no radio, no intertor light and the engine seems harder to start and has a high pitched whine in it while running which was not there before. Any ideas what I might have damaged in the electrics please. regards

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  • malcolm smedley Oct 28, 2008

    Thanks for your support, My Mazda does not have central locking in the boot, it is a hatch. Sounds like it could be the ECU unit behind the fuse box. Would this be causing the other symptoms as well. Regards

  • malcolm smedley Oct 30, 2008

    Hi Jean. I have the fuse box out of the thing but I am not sure what the ECU looks like. If I can Indentify it can I easily test it. I noticed a big black box hangig down under the right hand side of dash about the size of a DVD case. Is this the ECU or would it have something to do with the aftermarket alarm system fitted. Regards Malcolm


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Does your mazda have a central locking unit in the boot? If so then follow the wiring if you can to the fuse block and see where the wiring goes into and check the problem their? If that does not solve the then check the central locking unit in the boot and the ECU unit behind the fuse box.

Hope this will help you

Posted on Oct 25, 2008

  • Jean Pienaar
    Jean Pienaar Oct 30, 2008

    Hi Malsmed,

    Yes that can also cause other problems to arise if not solved quickly and i hope i could help with your problem?

    regards Jean


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