P0302 Cylinder Misfire

Hug0

So, here is little update...

I found used ECU socket and coil socket.
So I took new cable and solder pins to it.

And suprisingly new cable did not make any change..
I took it and replace wire for cylinder 2, just to know if my made wire works and it does work fine...

Now it looks like, that all coil wires are OK. There is 12V with ignition, ground is OK and now I can tell that signal wire is also OK.

Unfortunatelly this leads me to ECU...

sportsman2003

Look on Ebay. I have seen ECU's for $100.00

SonicVQ

I think you are right.
Ebay is a good source for inexpensive ECUs. I have purchased them for as low $50 US (plus shipping, duty and taxes of $50 to Canada, so $100 total)

I believe you will need to have the VIN re-programmed, and re-sync the ECU and BCM so your intelligent keys will work and you can start the car.

-OR-
you can unsolder the EEPROM (95320 4Kb) and move it to the replacement ECU.

-OR-
you can read the old EEPROM and write to the replacement ECU EEPROM.


Good luck!

Hug0

Thanks!

That is what I am little aware. Immo and ECU settings.

I have MPPS cable with software for downloading and uploading ECU sw (I used it for my VW and BMW), so I am thinking, that I will duplicate my ECU to new one. But I don´t know how about immobiliser?

Also I have ECU MEC107-390 and only one available localy is MEC107-070. I can´t find any info about compatibility.
its around $200

also I can force VIN into ECU thru Uprev SW.

SonicVQ

The "MEC107" is not the part number, it is more like a production number.

You need to find out the ECU ID of your existing ECU. It will be something like "6GC2A"

This can be done with an cheap ELM327 OBD scanner and an app like:
• OBD Fusion (in diagnostic reports, under calibration ID)
• NDS III (Android Only and bluetooth OBD scanner only)
• Torque Pro (Android Only under Adapter settings)

The actual part number for your ECU is 23703 + ECU ID, for example: 23703-1UX0A
IF your ECU ID is 1UX0A.

As far as I know, the 370 and G37 use the same hardware for the ECU, but have different programming in the ROM and in the EEPROM that is not part of the SH7059 processor, but a separate 8 pin IC.

You will need to copy the ECU ROMs programming and write it to the new ECU.
I don't think your MPPS cable will work on a Nissan / Hitachi / Renesas ECU.

Also, you will need to copy or move the 8 pin EEPROM that holds the key IDs, VIN and other stuff.

I think your best option is to contact "ByThaBay" (Nissan 370Z Forum - View Profile: ByThaBay).

I think he can provide a pre-programmed ECU that you can just swap in.

Hug0

Finally some progress!!

I´ve just got ECU from G37. Local company copy my immo there, but they were unable to copy whole SW becouse uprev locked it :/

But I just tried it with stock infinity maps and car runs perfectly fine!!!

So I will revert original ECU to stock, copy it to new one and apply uprev maps to it again.

I wanna thank you very much for all your help!!!!