PCM Diagnostics & Tuning HP Tuners | Holley | Diablo

Problems reading PCM?

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Old Jul 7, 2006 | 12:55 AM
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Default Problems reading PCM?

Long story short is that I had the car apart and put it back together and now I cant read the PCM. The car runs fine but of coarse I wanted to make some changes. Before tearing it apart I could read it just fine. I have power to the cig lighter. I am using HPtuners with a serial cable. Could my cable/interface possibly have taken a turn for the worse? This stuff is less than a year old.
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Old Jul 7, 2006 | 11:30 AM
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Dunno - maybe you missed a ground somewhere? If the CIG/ACCY fuse is OK I'd try probing the DLC pins with a meter - www.obdii.com/connector.html shows what they are. Hope this helps...
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Old Jul 8, 2006 | 03:53 AM
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Well I checked the power on the plug on the car and it reads 11.88. Could there be something wrong with my cable?
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Old Jul 8, 2006 | 10:47 AM
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Try loging another car with your cable and if it connects then its the car not the cable.
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Old Jul 8, 2006 | 04:03 PM
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I would but I dont really have that option over here at the moment. I really doubt its the car. My thoughts would be if it were the computer it the car would not run. I am going to try a different laptop next. My best bet at this point I think.
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Old Jul 9, 2006 | 10:41 AM
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Just in case anyone was wondering it ended up being the serial port on the other laptop. I done know exaclty what is wrong with it but everything works fine on another system.
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