If that doesn't get you anywhere, remove the two mounting screws for the OBD2 connector and physically examine the pin receivers (proper term eludes me at the moment) and make sure that they all look the same in terms of shape and distance from the front of the connector.
I have personally experienced a bad ECU that would run the car, but wouldn't talk to anything. Just because the meter connects, doesn't mean that the cable is getting a good connection. Your probe will make easier contact than the diagnostic cable (or module or whatever) since you can wiggle it around. This is easy to do with a probe if you're not careful. One of the pins in the connector is pushed back into the housing, or bent out of shape, so far that your tool's OBD2 cable can't make contact.Break in the harness between the OBD2 connector and the ECU.If you ARE getting power, then options are:
If you aren't getting power at the port (easy to test with your multimeter), the fuse is likely the issue. Look for the one labeled "accessory", "ACC", "CIG", etc. Does the cigarette lighter / accessory port work? (They're typically on the same circuit.) I had this issue on an Escalade, turned out to be a fuse. The Nissan DataScan I software works with factory Nissan and Infiniti ECUs.Note that the OBD2 port is fused. A list of cars that the software has been tested on is located on the NDSI Supported Vehicles page. Majority of these cars are equipped with grey a 14 pin Consult I connecter. The Nissan DataScan I is intended for Nissan cars build between years 19. Most new Nissan cars have a build in immobiliser and any new keys have to.
This video shows the use of Nissan DataScan II software to program new transponder keys. It supports diagnostics of the following control modules: ECM, BCM, TCM, ABS, SRS and ECMD (ECM Diesel) over the K line (DDL2). Nissan DataScan II is a program intended for Nissan cars equipped with gray 16 pin OBDII connecter and that use Consult II protocol over K line (DDL2). Sample Results From Member Downloads Nissan Data Scan 2 Torrent
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