Question about 2004 Mazda 6

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My check engine light is on and my aftermarket radio will not turn on. Any suggestions to what the problem might be?

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  • Mark Feb 21, 2012

    I checked the fuses for the audio system and nothing seems to be blown.



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Yes, the two issues that you are having are not related in any way, except they share the same platform that you own and drive, and like to listen to.
I urge you first to listen to what that check engine light is telling you: The light being on is to alert the driver that the computer has detected a malfunction in its engine management system. The computer stores this information as a retrievable trouble code, and trips the light on. The whole point of computerized engine controls is to run the engine as efficiently and economically as possible. While it's doing that, the alternator is providing enough electrical power to run the engine and all of the other functions the car is equipped with. So have the computer scanned for trouble codes (some parts stores provide scan service free of charge) and solve that problem first. Then you'll still have a good running car and can fix the radio. I guess the first place to start after the fuses would be to pull off the connector at back of radio and check for power in at the feed wire. And then, you know, the usual, check the ground for the radio, check the speakers for power and if they work or not. Someone will have to troubleshoot all that.
Good luck.

Posted on Feb 22, 2012


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