What's new
CK5
Register an account today to become a member! Once signed in, you'll be able to participate on this site by adding your own topics and posts, as well as connect with other members.

No data logging at all **Fixed thanks!**

M

Mountain_man

1/2 ton status
Joined
Aug 20, 2007
Posts
402
Reaction score
1
Location
Globe, AZ
I have the premade usb cable for my 91 suburban and can't get it to read any data. I have tried all options of jumpering the pins and it makes no difference. I've tried baud options and made sure the com port is correct and still nothing. When I jumper to a certain pin while plugged in and vehicle running it makes my check engine light blink over and over. I have tried tons and can't find anyone with the same problem to look up this issue. Please help if you can. Thanks,
Josh
 
Last edited:
akm cables about a year ago I'm almost posative. Never had a laptop to try it out till last few months. Now I've tried 5 different ones with nothing.
 
I'm assuming you bought the cable online? If so post a link so i can see the cable. I had issues with my current cable not working but it was the baud setting needed to be set to 4800 for it to work with the USB version cable.
 
I am wondering if any other type of USB device is working on your Laptop? Maybe a USB jump drive? USB mouse?

I'm wondering, is there some type of USB driver required? My Burn 2 from Moates.net requires a USB driver.
dave w
 
Yes any other usb device works perfectly. Any mouse or jump drive. I have run that test many times before and it passes all the tests however their is an option for diagnostic mode test and nothing happens there. In test mode though everything is great.
 
I do not have a USB ALDL cable, I have the older DB9 serial cable ALDL cable. If you had the DB9 cable I would suggest using an ohm meter to verify the wires are good with my known good ALDL cable, a way of making sure the pins from the DB9 end are set in the correct pin configuration to the ALDL end. I think most likely the USB ALDL cable is BAD? I think a wire is not correct from the ALDL end to the USB end (maybe cross pin touching, or some other manufacture defect).
dave w
 
Thats a thought, i could always check my ALDL USB cable and let you know which wire is where on each end to verfy that your cable is wired correctly.
 
that may help I'll try and crack my plug open right now.

The plug is fully sealed... no cracking open it looks like lol. I swear I'm cursed.

And this is the same cable that aldlcables has. I believe it may have even been purchased there.
 
Last edited:
I'll see about getting you the info tonight when i get home from work. Thelink you posted shows that cable costing $90.00 and they are only 59.99 at ALDLcable.com. Not saying it isn't the same cable (i'm sure it is and that's why it cost more through your link).
 
I had a runaround with a cable as well, as did the previous owner. Only way to verify it wasn't the laptop or the ECM was to try a known good cable in the mix, and see what happened. Worked intermittently, connected, everything, just no data.

Anyone here close by who might work with you on cable testing?
 
Ok, i am checking continuity from one end of the cable to the other. The A terminal of the ALDL side is ground which is the main metal frame of the USB end of the cable. The B terminal of the ALDL side goes to both of the jumper pins that are closest to the USB end of the cable. No other wire is connected anywhere. I cannot get continuity through any of the terminals on the USB portion but my cable does work. :crazy:
 
I don't think you can test these cables without some serious tools...transistors, diodes, etc., the electricity doesn't take a straight path through the cable unfortunately. :(
 
I must have a bad cable. I get nothing through hyperterminal test under any options. I pass the aldl test on that program though under all conditions.

Since I've already purchased one how can I make a cheap cable? And what should it cost. I know electronics pretty well and usually can figure out most things just aparently not this cable.

One other question did anyone have to go into their port settings in the com port option and change anything in there? Such as control/bits/baud/stop bits? If I could get your settings it might help if they need to be changed. Thanks again.
 
Ok, my setting with the USB cable are....

US
ECM 1227747, 1228062
Com port 3 (in my case)
Baud 4800

The com port you might have to change but that is easy, you just keep changing it until it says ok just to the right of it.
 
all that is normal and says ok however I ment in device manager on the actual USB serial port part.
 
You must log in or register to reply here.

Latest Posts

Top Bottom