1. Checked voltage 12.5 from batt
2. Ran the reflash connector directly from pin 79 to the white part of the tactrix cable
3. Used a charger pack for batt when I reflashed the car.......(People always preach voltage is an issue)
4. Tried t reflash the car while its running
5. Connected ECU INTO TWO different Evo and it read them....Even reflashed map for 1450cc injectors (car started better)
6. Checked voltage on reflash connector
7. Used tactrix 2.0 cable on it too but 1.3 has worked fine

What could be wrong with this car is it the obd2 port thats bad? I

Please help

 

Fuse for the OBD2 port is okay?

 

I'm having a similar issue, just can't consitantly log or flash to the Ecu on my 9. All started about 6 weeks ago, I had made some changes to my engine bay, rotating my battery after installing a short route UICP. I moved some of the wires around so the negative battery cable could reach the terminal. When this problem first started I noticed that fuse 10 under the dash had blown, I replaced this but still couldn't attach.

I originally thought it was my Tactrix cables (1.3u) so I got another, new, cable from a friend, which hooked up straight away. Problem solved, I thought, but no, because next time I tried to log the ecu I couldn't read it again. I've tried heaps of times (i'm in the middle of finalising my tune) and sometimes, at random, it hooks up no issue. I've been able to flash a few maps to the car and log maybe 3 or 4 wot runs. Last time I tried I got it to hook up and started logging, did two wot runs, went to check the log and found that evoscan had disconnected about 30 seconds after it started, and I haven't been able to log since.

It's strange because I can check for faults with no issue, I just can't attach to the ecu to log or flash maps. Any ideas? Maybe a tall cliff and my car with the handbrake off will help!