Eternal problem with PCM2

[juankimalo]

I finally received the SIM card tray from Becker USA. :clapping:

My PCM2 had it broken. I did the replacement, and followed the instructions from the DIY: :soapbox:

http://www.renntech.org/forums/index.php?showtopic=9559

When I connected the unit to the car, the PCM2 didn't work. A friend of mine (electronic engineer) helped me in dismantling again the PCM2. He checked up all the connectors and mounted again the unit. All seems to be correct

Then we went to plug in the car and the PCM2 was out of work

We decided to go out with the car for a while and show him the excellences of the 996. 10 minutes later, suddenly the PCM started working. It began to play the 1st disc from the Compact disc changer, in a loud volume. The new SIM card tray worked too, as we could see the phone operative. The only thing incorrect was that that the keyboard didn't responde...:renntech:

Then we stopped the car, disconnet the battery for 15 minutes, and after that..... the PCM2 worked!!!!!!!!!!!!

I could update the hour, date, check the phone list, change 3 or four times the CD changer, selected the new radio stations, etc.

I checked the Navigation sistem too.

Always was perfect...!!!

But 15 minutes later , the PCM2 suddenly seized up.:renntech:

We couldn't do anything more because It was blocked in a radio station...

Finally we deciced to continue the next day.

The day after the battery was dead. Almost 4 years, .... normal.... a normal battery life...

I purchased a new one but the PCM2 continued blocked... Then I disconnected the PCM2 unit from the car till I could find the solution.

All the fuses were correct, the wiring, the connectors... so what could I do?

I went to see a frind who purchased the Durametric Tool last week, but we didn't know how to solve the problem

The durametric offered a PCM error, but no how to proceed.

I decided to check it other day because we have no experience and I left the car parked in the garage

3 days after I went to get the car, but the new battery was completely dead. I went to the shop and thanks to the warranty, they replaced me with a new one.

What can I do?

Why the PCM2 can't work?

Why the battery is at high risk when the car is parked and closed?

I'm getting mad.

I read everything I found here about PCM2 troubles

I could see that there is a way to plug the wiring, and I read that some people had the same battery issue too

Please help!!!!

Thanks in advance

[typhon]

i too have had nothing but trouble w/ my pcm system as you can see in my earlier post:

http://www.renntech.org/forums/index.php?s...amp;#entry87478

unfortunately, the system that comes with the car doesn't appear to be that good.

i know that you probably don't want to hear this, but i am going to scrap the whole system and go with the kenwood 7100. all of the posts that i have read about this unit have been positive. all of the users seem to really like it. i hope you have better luck than i did. i did not get one single reply to my earlier post.

[juankimalo]

Thanks typhon... :cheers:

Let's hope to solve this problem ....

[typhon]

Thanks typhon... :cheers:

Let's hope to solve this problem ....

i got it!!! this cured my pcm1 problem, but i don't know if it is the same for the pcm2. here is what you do:

1) remove the left and right switch panels from the side of the pcm unit. you do this by inserting a small spatula at the base of the panel and prying upward. you can see in the photo that i used the metal stereo removal tools. they work fine. just be careful not to scratch anything. as the bottom releases, use your fingers to pull the remainder of the panel loose.

2) repeat for right side. there is no need to disconnect any of the switches or cigarette lighter.

3) there are 2 metal spring tabs that hold the pcm1 in place. insert your index fingers on each side of the unit and push these in. while holding them in, slide the unit toward you. here is the location of the spring tab w/ the unit removed:

4) once the unit is free, there is a 10amp fuse located on the driver's side upper rear corner. you should be able to reach it without disconnecting all of the wiring harnesses that plug into the rear of the pcm. i did not know what i was looking for, so i removed the entire unit. i removed the fuse and tested it to find that it was open. i replaced it and reinstalled the pcm. you will have to enter your codes again, so you might want to have those handy.

i don't know why only the sound system is fused. i would have thought that the entire unit would be. anyway, glad i found it.

hope this helps.

[typhon]

here is the link to the original problem that i was having.

http://www.renntech.org/forums/index.php?s...amp;#entry87478