adrian kim

My car is 2003 Cayenne Turbo with PCM2.1
6 months has passed since the audio system failed.
No response, No sound, No display... screen is black T T.
I tried all the way I suggested at this forum, but it was useless.
(for example... press digit 1,4,8, replace fuse, Starting pattern...)
So I decided to disassemble the PCM2.1

first my PCM2.1 on board



2. separate from the dashboard



3. check the fuse - OK



4. check cables - OK



5. open PCM2.1



6. detail check - i think There was nothing wrong with the sight.hahaha



7. assemble PCM2.1 T T




finally, I realized that I couldn't fix it myself.

But I wonder what I am asking for now.

There seems to be no physical problem inside the PCM, so may the PCM fail because it doesn't supply power?
How can I check if there is a problem with applying the PCM?
I wish someone would reply to me. please~~
I am so sad to see my dumb Cay these days.