Xprog-M Read Mercedes EZS Motorola 912 or 9s12 EEPROM

Here is the detail instruction on reading Mercedes-Benz EZS Motorola 912 or 9s12 CPU EEPROM
in-circuit with X-prog M ECU programming tool (xprog V5.0, V5.3,V5.50,V5.55).
Note: you can also use other programmers, like Rosfar, ETL etc.
To read Mercedes
EZS 912 CPU EEPROM
Mercedes-Benz EZS Motorola 912 or 9s12 CPU
Almost all control points joined with service connector of EZS – black painted
connector. We offer connection cable for EZS reading with X-Prog programmer:
You can make yourself cable for connection with other programmers.
Use the following wiring connection diagram:
1 – EXTAL
2 – GND
3 – RESET
4 – BKGD
The EXTAL signal doesn’t joint to service connector, so we have to make jump according to CPU type. If you see on board
It means you have 912 CPU. Do make a jump like in picture (you can keep this jump even
after reading/writing finishing).
Find resistor on RESET line and make a jump on it for good communication. (you can
keep this jump even after reading/writing finishing).
Then solder red wire of our cable for power supplying.
Now plug in the connector to Xprog-M ECU programmer board like in picture:
We recommend to mount the part of cover on to the EZS, then you have not a mistake
while you connect cable to EZS.
Open Xprog software and press “Device” tab.
Choose the EEPROM Type, 1,2,3 in following
Press “New” button, then press “Read” button to read eeprom
Reading device
You will see the eeprom data
Save EEPROM file you have read
To read Mercedes EZS 9S12 CPU EEPROM
If you see on the board
It means you have 9S12 CPU. Do make only one jump like in picture
Then solder red wire of our cable for power supplying.
Then do the same job like with previous CPU type but remember about a difference when
you choose microchip in Xprog programmer software.
Sometimes new board types with 9S12 CPU have not some jumps (it has zero resistance as
usual). Make the- se jumps yourself.
You can keep these jumps after reading/writing, too.