![aldl gm obd1 cable with 12 pin connector usb aldl gm obd1 cable with 12 pin connector usb](https://forums.parallax.com/uploads/attachments/64376/80501.gif)
Unless you have a great electronics background, better off buying a pre-made cable. This allows you to set the BAUD rate fairly close to 8192 allowing communication flow. The way around this is to use a UART chip within your cable circuit design.
Aldl gm obd1 cable with 12 pin connector usb serial#
This is fine for a serial port, but if it's a USB port (using a USB to serial converter) then you are stuck at 9600 BAUD so you can't communicate. For some reason, ECMs communicate at 8192 BAUD. However.if you only have USB ports then this makes life tough. If you are using an older laptop with an actual serial port then you can make your own cable very easily (small, simple circuit) and download some free software. The stuff that makes them EPA/ODBII compliant. O2, Map, Mat, MAF, VSS, EVAP, misfire etc. Most will give P codes and Global ODBII data. Most of the cheaper ones won't do make specific, body control and antilock(B and U code). Most are limited to Global ODBII data stream, but work. I've seen these advertised with USB or Bluetooth. I'm assuming you will be using a laptop.įor most 1995 and later, there are inexpensive "ELM327" chip based adapters. If you are going to connect it to a desktop, man you are going to need a long USB cable. However if it is standard ALDL (1981-1993-4) there are ALDL to USB cables with software.
![aldl gm obd1 cable with 12 pin connector usb aldl gm obd1 cable with 12 pin connector usb](http://4.bp.blogspot.com/_1PMLLkxJyoI/SKy5CyXSV3I/AAAAAAAABRo/sYzS4eznD1c/s320/aldl.jpg)
If you are talking about the mutant 1994-1995 (some 1996 trucks)ODB1 or 1.5 you may have a hard time unless you have a scanner that can decode the data.
![aldl gm obd1 cable with 12 pin connector usb aldl gm obd1 cable with 12 pin connector usb](https://obd2allinone.com/bigphotos/8947.jpg)
What is involved in hooking up a car to a home computer to SCAN It ? be it a OBD1 Or OBD2 ? How is it Done, and what will it actually tell you ? Thanks What is involved in hooking up a car to a home computer to SCAN It ? (/2)