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Car Will Not Connect ALDL

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Old Sep 17, 2004 | 05:37 PM
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Needin' Tires's Avatar
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Car: '98 Z28 M6 & '89 IROC-Z 350tpi
Car Will Not Connect ALDL

OK, here is the problem. I have been trying for the last few weeks to get my car to connect to my laptop. I am using WinXP Pro with SP2. I am also using a Radio Shack USB -> Serial Adapter. I am using a ALDL Cable from MaStach.com . I beleive everything is working because the ALDL Cable test software says it's ok. So everything from Software/Hardware side is ok I believe.

I have further tested my thoughts when I started up FreeScan. I have the correct COM port selected, set to 9600 with no Flow Control. I have tried with Hardware as well, no change.

When I try to connect I get nothing, I get the x80 x1 x29 x56 or something like that, Unrecognizable Header. Almost like it's just echoing what is being sent.

I have pulled out the ALDL cable from the port and just grounded the data cable to the ground cable. In the status window, I saw bytes coming in, like I was creating them by quickly making a binary data stream. Usually it was like ff or 00 but sometimes it would produce an 80 and there would be a message saying found start header.

I have a 1989 Iroc-Z MAF TPI 350 Car. I beleive it's a 165 ECU. On the chip it says AUJL. There is an orange wire going into the back of the ALDL Connector at pins E and M. I am connecting the Ground to pin A. I am connecting my Data wire to pin M. I also have a 10K Ohm resistor between pin A and B. I don't believe anything else is wrong. Please, I need help.

Thank you

Robert
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