Alfa Romeo Radio with 68HC11PA8

[carsolution]

Hi guys.
I opened this thread to see if anyone already was able to read this MCU with UPA.
I already tryed the connections shown in the UPA PDF and without lift pins.
At this moment I have all the pins at green telling the connections are well done but still not being able to read the MCU. I am trying to read it to find the security code.
If anyone already had this experience please let me know.
Best Regards to all of you.
Nuno

[lupu_sandu]

At the back of PCB, on front of player just bellow torx screw you will see 472 resistor and 0 resistor. Remove them from pcb and try again.
LE:
Don't forget about that:


EEPROM 24c08 smd + 92256
locked to immo

[carsolution]

Thanks a lot for the info my friend.
Really, I didnt know about the immo.
Once again, thanks a lot.
Best Regards,
Nuno

[carsolution]

Hi lupu_sadu.
I need your help in this subject.
The radio was asking for the code, like I told you I was not able to read the MCU but now the radio doesnt turn on, it is dead.
Is it possible to damaged the radio trying to read the MCU???
I really dont understand this situation.
Best Regards,
Nuno

[lupu_sandu]

In most cases if motorola is secured, UPA will erase eeprom.
Same situation i have a few month ago with a MB sound 8000 with MC68HC11KA4.
Check this dump (from a 937 HIGH CD - code 4666 off, can inactive).
Also in some situation, you need to choose oscillator.