VVDI Prog user manual: how to read ISN code of BMW Fxx MEVD172 (N20)?
Look here:
Start VVDI Prog software.
Select type: 3-ECU Brand: BMW_F_ENGINE Device: MEVD172(N20)
Click on Connection Diagram.It shows NO.2 connector.
follow the wiring diagram to finish connection
the left corner is NO.33 pin, and the right corner has pin, follow its pin number and order to connect the cable.You’ll see the numbers at the four corners in the real ECU
Start to connect cables to VVDI PROG
Connect the power cable; the red is power cable.
There are 2 power cables, one is No.1 pin, the other is NO.22 pin.
Then,connect GND cable; it is NO.10 pin.
Connect CANH cable and CANL cable; CANH is blue and CANL is yellow.
Connect Boot pin:Open a hole on Engine ECU and find out the pin position by following the wiring diagram, then use Boot line to point at this pin and to read data.
Check the cables connection to VVDI Prog
It needs an external power adapter, because it reads Engine ECU
Close wiring diagram
Read BMW ECU Data.Here we go.
Click on “New Create”,then “read”.And save data after it reads out ECU ENGINE data successfully.
If BMW CAS4+ all key lost, firstly read CAS data then Engine ECU data, when get message it needs ISN code, load Engine ECU EP data, then you can generate dealer key.
The interface of SN code display after you connect successfully
