Mike Upham

Hi Every one. I have a 2003 WRX STI💥. I am trying to get my car roadworthy, but the darn AB light is on. Been to 3 companies, they cannot connect to AB computer. I have check under drivers seat for bad connection. I have taken box out to inspect for water damage. All seems fine. I am now thinking the I should try to follow the communication line to the Diagnostic reader socket? I would like to follow the K line to the socket to see if any issues. Or I would like to run a wire directly from the box to the connection point for the scanner. Not sure what pin = the Communication line for Diagnostic reader. Any advice or diagrams for me to follow the Kline would be such a help? Any one experienced similar issues ?