Pins 4 & 5 are ground. Pin 9 is data. No 10K resistor is needed. Yes pin 16 is 12v if needed.
You will only be able to scan your VY Commodore. Use TunerPro RT and the .adx definition for the VY Commodore.
Pins 4 & 5 are ground. Pin 9 is data. No 10K resistor is needed. Yes pin 16 is 12v if needed.
You will only be able to scan your VY Commodore. Use TunerPro RT and the .adx definition for the VY Commodore.
The cable wires are 5v rx tx ground rt ct so i join grond to ether 4 or 5 pin do i put both rx and tx pin 9 or am i way offOriginally Posted by phonedawgz
you have it.
1995 Chevrolet Monte Carlo LS 3100 + 4T60E
http://www.ebay.com.au/itm/Serial-Co...QAAOSwV-RXEil8 Any thoughts on this one
That one is USB to RS485. You need USB to Serial 232 TTL such as this from the same seller. You also want an FTDI chipset in case you need to use it on 8192 baud. http://www.ebay.com.au/itm/1Pcs-6Pin...item4653b56a1f
Hope this helps,
Brian
[QUOTE=sturgillbd;61931]That one is USB to RS485. You need USB to Serial 232 TTL such as this from the same seller. You also want an FTDI chipset in c
Last edited by old8s; 10-30-2016 at 10:35 AM.
Basically what you do is tie the RX and TX pins together and that is the serial data wire. The other pin you use is ground. Read some of the posts at the beginning of this thread. They describe what needs to be done. RS485 is a different form of serial communications. IIRC, it uses differential wiring for noise immunity. I know it seems strange to connect RX and TX together but the ecm only responds when data is requested on the 8192 baud systems. Tunerpro requests data and the ecm them responds.
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