Question about 1994 Suzuki Sidekick

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Check engine light on in my 1994 suzuki sidekick

I went to have my car smogged and while it passed comphrensive visual inspection and the emissions test. it failed the function check because the check engine light is on. the check engine light has been on since i got the car and have tried twice to have diagnostic's done on it and it didn't work. any advice would be greately appreciated.

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  • darthvagrant Dec 06, 2008

    My 1993 Sidekick 'check engine' light comes on a few miles after I disconnect / reconnect the battery. When shorting the (underhood) diagonistic connector,I can achieve NO code reading AT ALL. The vehicle runs fine. All emission components are in place, I have been told the ECM internal diagnostic (reading) capabilities (circuits) are faulty and inoperative, and in fact, might negating my check engine light. My vehicle is NOT of the series of the notorous leaking condensers. I have had the board out, and it's absolutely pristine. HOW CAN I OBTAIL CODE READINGS? Im 99% certain I'm grounding (conecting) the correct 4 cavity diagonistic cavaties & connectors.

  • Anonymous Feb 26, 2009

    Thanks, Sandpiper. The switch behind the lt. dash speaker to which you allude is not an issue on my vehicle. I (long ago) moved that damn switch to the outside face of the instrument panel so it could be "reset" at will. Not the issue on my problem. Still have the light on, still driving the vehicle. The 30 or more MPG on the highway I receive would seem to indicate no serious problem(s). I continue to be dissappointed at no codes being displayed.

  • Anonymous Mar 12, 2009

    How do you jump the diagonistic connecyor on a 94 sidekick?

  • darthvagrant May 11, 2010

    Thanks Sandpiper. The switch to which you allude isn't an issue on my vehicle. I (long ago) moved that damn switch (behind the lt. speaker grille) to the outside face of the instrument panel where it could be reached at will. Light still on, codes STILL unavailable. Runs fine, 30+ MPG on the highway. Go figure!


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I had the same problem on my 1994 Sidekick. The computer is programed to turn the light at a certain mileage. My came on at 100,000 miles. No codes were ever found in the computer. I researched it and found out about a reset switch that was located on the front left speaker. Hope this helps.

Posted on Feb 26, 2009

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I had a similar experience with a different car and it was something (can't remember) that was unplugged under the car that sent info from the rear wheels to the computer.

Posted on Nov 26, 2008

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