Preparation:
CGDI BMW programmer+ N13 read ISN authorization
N13 DME
One professional OBD cable made by CG Company which is special for reading and writing DME ISN
N13 is same as N20, the difference between them is that the back of N20 is a smooth plate, and N13 back is iron bar which is felt concave and convex.
Procedure:
Follow the wiring diagram in the CGDI BMW software
There are 6 Pin feet on N13 DME
Connect 12V cables (2 red)
Connect CAN-L and CAN-H cables (1 yellow and 1 green)
Connect GPT-0 cable (1 brown)
Connect GPT-1 cable (1 purple)
Connect GND cable (1 black)
Note: When connect all the cables with DME well, please confirm it again with the wiring diagram in the software.
Go to CGDI BMW software
Click on “N13/N20/N55/B38 read ISN”
Select N13 chip and click “OK”
There are 5 options: Wiring Diagram, Identify, Read ISN, Write ISN and Back
Click on “Identify”
Read out the chip, ISN and hardware ID
Click on “Read ISN”
Getting authorization…
Read DFLASH and ISN successfully
Copy the ISN
Please kindly notice:
ISN can be read, write, modify and change second-hand DME
Click on “Write ISN”
Read DFLASH success
Save DFLASH data
Paste the ISN has been read
To distinguish the ISN from the original one
Change the last two digits to “88”
Click on “OK”
Write ISN success
Click on “Read ISN” again
Confirm CGDI BMW key programmer write N13 ISN successfully
Except N13, CGDI Prog BMW also can read ISN for the following DME types without dismantling.
A0000015 B48 B58
A0000017 MSD80 / 81 /85 /87 MSV90
A0000018 N20 / N55 /B38
Reference: http://blog.eobdtool.co.uk/cgdi-prog-bmw-read-n13-n20-n55-b38-isn-no-need-opening-dme/
That’s all!
