Using VVDI PROG read BMW Engine ECU ISN

This post step-by-step show the detailed procedure using VVDI PROG read BMW Engine ECU ISN.

YouTube Video Demo:

Great Wall Delphi 48 immobilizer-01 BMW Engine ECU-01

Part 1: Open VVDI PROG, select and check wiring diagram

Open VVDI PROG software.

Select type: 3-ECU  Brand: BMW_F_ENGINE  Device: MEVD172(N20)

Click “Wiring Diagram”

Wiring Diagram is open, it prompts NO.2 connector.

NO.2 connector-02

This is NO.2 connector

NO.2 connector-03

Pull down the wiring diagram.

Attention: the left corner is NO.33 pin, and the right corner has pin, follow its pin number and order to connect the cable.

pin number and order-04

This is real BMW Engine ECU

real BMW Engine ECU-05

You see all of pin serial numbers at the four corners.

pin serial number-06

Part 2: connect the cable to VVDI PRO

Start to connect the cable to VVDI PRO

connect the cable-07

Firstly, connect power cable, the red is power cable

power cable-08

There are 2 power cables, one is No.1 pin, one is NO.22 pin.

2 power cables-09

Next, connect GND cable, it is NO.10 pin.

GND cable-10(01)

Next, connect CANH cable and CANL cable, CANH is blue color, CANL is yellow color.

Finally, this group of cables is all connected well.

connected well-10(02)

Part 3: connect BOOT Line.

This is Boot Pin.

boot line-11

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.

pin position-12

Check whether all the cables are connected well to VVDIprog , PS: VVDIprog needs to connect an external power adapter, because it reads Engine ECU.

Part 4: Read out BMW Engine ECU data

Close wiring diagram on VVDI Prog

Click “New Create”

Click “Read”

Wait until the data is read out successfully.

Save data.

Finally, BMW Engine ECU data is read out.

Important note:

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.