Hi, I have a turbocharged 2000 NB. Im having an issue where, after driving one time, my car shut off and now it wont start again. Usually the fuel pump primes loudly, do not hear anything, can not connect via tuner studio, no spark, no fuel. Usually the check engine flashes before the car is on (Accessory or on) I have the setting in TS for it to be on while car is not on, but now the light is completely gone. I replaced my Main Fuse, checked engine bay fuses, checked under the dash fuses, nothing. Im really at a loss on what to do, can anyone help or give me some pointers? Im going to attach some pictures of my ECU internals, if you happen to see anything wrong with any images let me know, thank you.

 

Battery voltage? Can you see 12v at the 4AG pin on the ecu connector? If not your problem is between the battery and harness/subharness

 

Hey, I just plugged back up my stock ECU and it will start and fire right up, so it has to be an ECU issue, since I plug the MS in and it wont respond at all, cant connect on TS nor start the car.

 

Be careful, I toasted an ECU due to a wiring issue. You probably don't have that issue, because my motherboard was obviously toasted and yours lacks the black marks and melted components that mine featured. But still, SOMETHING happened - if you made any wiring changes, look at them closely.

It does sound like the issue is inside the ECU though.

 

The top board has two tiny fuses, check if they are ok.

 

my negative terminal disconnected mid drive, that’s why it stopped working. I replaced the F1 and F2 fuses the small block white ones, still nothing.

 

I replaced them now and same thing

 

Only other thing I could suggest before sending it back would be to test the +12v/find pins by the db9 connector when it’s plugged in.