No Link issues with OBDII port on LS1 M3 Please Help!
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Staging Lane
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No Link issues with OBDII port on LS1 M3 Please Help!
I have an 02 LS1 into my 1995 BMW M3. I went to tune get the car tuned and they had problems linking up to the OBD2 port becuase there was no power to it. So I took the car back home and checked the wiring.
I found it was not wired correctly so I cut all the wires and started fresh.
-connected Pin 16 of the OBD2 port to a constant 12v
- tapped (soldered) pin 2 of the OBD2 port to the back of the PCM at Pin 58 (dark green)
- Connected pin 4 and 5 together and grounded them
Now when I plug the scanner in it gets power but when I press read, it says "No Link"
What could be wrong? Please help
I found it was not wired correctly so I cut all the wires and started fresh.
-connected Pin 16 of the OBD2 port to a constant 12v
- tapped (soldered) pin 2 of the OBD2 port to the back of the PCM at Pin 58 (dark green)
- Connected pin 4 and 5 together and grounded them
Now when I plug the scanner in it gets power but when I press read, it says "No Link"
What could be wrong? Please help
Last edited by ryanzcastro; 09-15-2011 at 02:31 AM.
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Staging Lane
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Yes, I am trying it with the ignition switch on. The car even starts and runs. Is the green wire needed for anything else besides the serial port? Maybe because I just tapped it in that its signal is getting disturbed by whatever else its connected to?