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
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.
