Well let’s start off by saying that I bought coding software and the cable, I have been trying to get the computer to talk to the programs and I am getting errors. I have been working with the person I got the software and cable from and he has told me that the voltage at pin 7 and 8 are to low. The voltage I am getting at pin 4&7 with ignition on is .74 and voltage between 4 & 8 is 8,67. I am being told that both these should be equal to the battery voltage???? If that is the case where should I start looking for an issue. I am getting 12 volts at pin 16 using pin 4 & 16.

I was able to read engine code before all of this trying to code, now I can’t connect to read codes. I find a few things to try like disconnecting the battery and putting the two terminals together to disapate residual power and check a few fuses. Anything else I should try? One other question would I be able to change the computer from my parts and and reprogram it with my JCW tune file?

Just did the fuse check and the battery thing with no Joy, but for some reason I am not getting power to the fuse 5 on both sides a of the fuse

Yes you usually do but the cable I got has the switch that does that for you. I was having issues today with you code reader linking up but did a ecu reset and now it is connecting. But I would still like to know what pin 7 and 8 volts should be, after the reset pin 7 went up to .84v and pin 8 went up to 8.79v. I had been working with the guy I got my cable and programs from and he even sent me another cable to see if that was the issue then today I figured out my code reader wasn’t connecting, but I am at work and was wondering if anyone knew what those pins should read with the ignition on

Can anyone with a r53 tell me what you pin 7&8 read on you obd port with ignition on please