ECU relay in EPDM panel started buzzing, so I pulled over and turned the car off, when I switched the relay out with another one it stopped the buzzing, so I started the car and it ran for about 2 seconds and then shut off, then went into fail safe mode, where the fans come on with the key on, the security light stays on during crank which means I have to have the key reprogrammed, and My OBD2 wont link up with the system anymore, so how do I reflash the ecu if I dont have any communication?

 

any fix to this????
i think i got the same issiue

 

yes but it wasnt easy or cheap, first I replaced every relay in the IPDM panel, that changed nothing, so I figured it was the ecm, I sent mine off to be fixed, DONT DO THIS!!! iT WAS A SCAM! after taking apart the IPDM panel I saw the corrosion and smelled a burnt resistor or transistor, so I replaced the IPDM module next to the battery, (make sure the part numbers match exactly, I got the wrong one and when i connected the battery my windshield wipers came on and wouldnt turn off) with the correct one and then had power to the ECM (pins 8 and 16), still no communiucation, so I replaced the ECM, (once again make sure you get the right one!) with the correct one the second time around and lo and behold, had to order a OBD2 to USB interface cable for my laptop and download the nissan data scan 2 software, (which only works on a windows computer, so, mac users, sucks to be you, nissan dont gaf!) after paying for the activation (46 to 50 dollars) I was able to program my ECM. I thought I finally had it dicked, she wasnt throwing the no comms code any more, but lo and behold, nissan threw in one last ****ee ****ee for me, I had to re program my key, thats why the red light on the dash stays on when you are trying to start the vehicle. in the nissan data scan 2 software ECM area is a work support selection that allows you to reprogram your demobilizer, you have to find the 5 digit code located below the interior fuse panel, which requires acrobatics that nobody over 50 years old should have to do unless its part of banging a hot 20 something chick. you then take that code to a dealership, you cannot call them and get your pin, you have to show up in person and listen to their "we dont recommend" blah, blah, "have your car towed 200 something miles to an infiniti dealership, because we dont do infiniti at nissan of Bakersfield" blah blah b.s. which is f****ing ridiculous! I finally called a long time locksmith and explained the situation to him and he was kind enough to spend one of his code tokens and get my code for me. Nissan can suck it as far as im concerned. input that 4 digit pin in the reprogram demobilizer area and follow the instructions, put key in , turn key on but dont start, turn key to acc, turn key on etc etc and final-frigging-LEE!!! my car starts and has to re learn everything so take it for about an hour long drive while your check engine light goes nuts until your car finsally starts idles and runs perfect again. There you have it brother, about $600.00 and 2 weeks of pure hell altogether. Enjoy that at least you doint have to make the same mistakes I did so you will probably be able to get yours fixed in a couple of days, like I could have had I known all this crap to start with, my A.S.E. certification expired in 2005 (I last certified in 2000, but didnt attend any training courses for my last five years.) So it was just like going to school all over again to get all this done, and remember... ALWAYS disconnect your battery before you do anything with your electrical system!