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Odometer reading from OBD1 850 1995

I'm thinking about buying a 95 850 which has low km as well as a pretty low price considering the km. I'm concerned that the odometer gear had broke at some point and was later fixed which is why the cluster is showing only 60000 km or that the cluster has been replace with one that has a functioning odometer with low km.
My question is when getting the km from the OBD1 port, does it give a reading of the cars km from the computer or does it only give the reading from the cluster that is currently in the dash functioning or not? In other words, if the seller changed the cluster, can I still get the cars original true km from the OBD1?

Thanks for any input.








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    Gee, I didn't know OBD-I can do that!... 850 1995

    I thought that OBD-I couldn't give that kind of information such as accumulated mileage; that only OBD-II (1996-on) had that capability.

    When I think of OBD-I, I think of the crude blinking LED that's available on pre-'96 cars, such as my own '93 240, for limited diagnostics.

    Have you actually extracted that true mileage information from that '95 with OBD-I already? Or are you going back to the car to try to do that? If you have, I'd love to hear the protocol for getting that mileage information.

    In any case, thanks.








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      Gee, I didn't know OBD-I can do that!... 850 1995

      Confirmed. I got a close reading when I tested my current 95 850. It showed a difference of almost 2000 km and my odometer had stopped working at one point. It took a few weeks for me to get around to replacing the odometer gear, with instructions I found on this forum of course.
      Thanks again to all that contribute input.








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      Gee, I didn't know OBD-I can do that!... 850 1995

      I haven't tried it on the car yet but from what I understand from a friend it can be done. I've had a tech at a Volvo dealer confirm that it can be done by:

      APPARENTLY you put the fly wire into the A7 port of the OBD1. Press and release the button 5 times. The red light should come on. While the light is on, press an release the button 1 time. The light will go off and come back on. Press the button a second time. Again the light will go off and come back on. Press a third time then wait for a series of three flashes. Count the flashes. That will be the last 3 digits of the km. Example: 1 flash, pause, 3 flashes, pause, 2 flashes then the last three digits are 132
      Leave the wire in the A7 port and repeat the above steps to get the first three digits, only the third time you press the button, press it twice, then wait for the series of flashes which will indicate the first three digits on the kms. If the car has under 100,000 km, the light will flash 10 times which represents a 0. You will get ten flashes for any other digit that is a 0 as well.

      I say APPARENTLY because I tried this process on a 95 850 that I already own and I didn't get any flashes that are supposed to represent the km digits. The wire on my OBD1 isn't in the greatest shape though and the tech said that is most likely why I wouldn't get any flashes. On the other hand, it flashes to give fault codes so I don't know if in fact it works or not because I have not seen it done pesonally. I hope I have not been wasting my time in the freezing cold trying to test the process for nothing.

      If anyone else has any input, I'd be glad to hear it for my out curiosity.








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        Gee, I didn't know OBD-I can do that!... 850 1995

        It works on the 95 model year OK, I had to do it since I bought the car with a busted Odometer. Use a search engine for the procedure.

        You can replace the busted wire in your OBD connector, and/or get a new one at a
        junk yard. It just plugs into a harness connector.

        Bill








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    Odometer reading from OBD1 850 1995

    The OBD is reading the mileage from the ECU not the cluster.








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      Odometer reading from OBD1 850 1995

      Thanks, that's the answer I was hoping for.








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        Odometer reading from OBD1 850 1995

        Negative, the cluster has the info, not the engine computer.
        --
        My name is Klaus and I am a V♂lv♂holic








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          Odometer reading from OBD1 850 1995

          Can you confirm how it is done?








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            Odometer reading from OBD1 850 1995

            You are correct, A-7, 5-5-5 and 1-1-2 for the left 3 digits and 1-1-1 for the right 3 digits.

            If the A-7 probe doesn't light up, try cleaning the port and/or closing the doors. There are 2 different instrument cluster makers, it may make a difference as to which one works - I don't know. Having only 66Km on the odo is much too low, even for a little old lady who only used it to go to the beauty parlor once a week.

            --
            My name is Klaus and I am a V♂lv♂holic







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