Jump to content

Welcome to RennTech.org Community, Guest

There are many great features available to you once you register at RennTech.org
You are free to view posts here, but you must log in to reply to existing posts, or to start your own new topic. Like most online communities, there are costs involved to maintain a site like this - so we encourage our members to donate. All donations go to the costs operating and maintaining this site. We prefer that guests take part in our community and we offer a lot in return to those willing to join our corner of the Porsche world. This site is 99 percent member supported (less than 1 percent comes from advertising) - so please consider an annual donation to keep this site running.

Here are some of the features available - once you register at RennTech.org

  • View Classified Ads
  • DIY Tutorials
  • Porsche TSB Listings (limited)
  • VIN Decoder
  • Special Offers
  • OBD II P-Codes
  • Paint Codes
  • Registry
  • Videos System
  • View Reviews
  • and get rid of this welcome message

It takes just a few minutes to register, and it's FREE

Contributing Members also get these additional benefits:
(you become a Contributing Member by donating money to the operation of this site)

  • No ads - advertisements are removed
  • Access the Contributors Only Forum
  • Contributing Members Only Downloads
  • Send attachments with PMs
  • All image/file storage limits are substantially increased for all Contributing Members
  • Option Codes Lookup
  • VIN Option Lookups (limited)

Recommended Posts

Hello,

I am new to the forum. I have a 2006 Cayenne S which i love, however I can not enjoy it now because of a faulty PCM 2.1 ...

During the end of the summer it was restarting from time to time (twice in a month or so). I thought it was overheating after reading this forum. Few month ago the situation got worse and the unit was restarting every hour. Sometimes it was impossible to turn it on for couple of hours/days. Now the PCM is completely dead and it's impossible to turn it on in any ways.

I was hoping that it will be case of dry solder so I tried to reheat it with heat gun... However that did not help...

Is there any chance to get CIRCUIT DIAGRAM ?

I have a good friend which is an electrician, but he was not able to find the current/voltage leak.

There is nearly impossible to get this unit fixed in Lithuania.

Thanks,

Fabian

Share this post


Link to post
Share on other sites

Thank you for your help! I registered but i could not find the specific document that I need. Do you know the exact name of the document/diagram?

Share this post


Link to post
Share on other sites

I guess that is truth... I couldn't manage to find any type of internal diagrams of any PCM or CDR unit. Sadly i'll have to ship the unit to UK or Germany which will be very expensive.

However, I bought cdr23 unit for less than 70USD in case PCM will be unrepairable.

Share this post


Link to post
Share on other sites

edited_zps3e719fab.jpg

I think i found the issue. I circled it in red. is it possible that the soldered connections melted from heat and connected together?

Sorry for my english, it's difficult to explain...

Share this post


Link to post
Share on other sites

That looks like a common ground or power bar - if you check with an ohm meter I think you will them all connected to each other.

(click to enlarge)

post-1-0-80264000-1390584827_thumb.jpg

Share this post


Link to post
Share on other sites

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.

Guest
Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.


  • Similar Content

    • By Andy Callahan
      Hello.  I'm a new member to the forum having just recently bought my first Porsche, a 2006 Cayman S with sport chrono.  Fortunately the car came with all manuals except for the PCM 2.1 manual.  I've scoured the internet and can't find any working links to the PCM 2.1 manual, or any insight into my question...which is...can someone tell me how to get to the individual settings menu?  My car currently locks when the car is in motion, and the thermostat is always set to 72 degrees.  I know these are settings that can be changed in the Individual Settings menu, I just can't find it.  Any help would be appreciated.  Thank you.
    • By danish
      I replaced the CDR23 HU with one of those Chinese (Seicane Android) unit.
      When I put the key in the ignition, the controls on steering wheel work fine, but when I start the engine, the controls don’t work.  Also, I noticed that if I wait to start the engine (say 10+ seconds) after putting the key in the ignition, there is no sound from the Bose amp, but if I start it right away, it works.  I also hear that thump sound from the amp when I remove the key from the ignition.
       
      The MOST adapter (in turn, the amp) wiring is getting power from the Canbus adapter.  It is switched, meaning, it will not work unless there is a key in the ignition.  Does it have to be unswtiched power connection?  If so, any reason why?  And could this tapping power from the canbus adapter in parallel causing the steering wheel controls to not work when engine is running?  Sorry, I am not an electrical engineer, so some of these questions may sound stupid.
       
      Any suggestions, besides suggesting to replace the sh!tty Bose amp?:)
    • By Dmellos
      This is the wiring diagrams doe the 981 CDR system and BOSE sound system..Hope it is useful



    • By RKPorsche
      I have issue with CR220 on 2002  Porsche Boxster Base, it didn't power on at first so here is the progress I made sofar
       
      - Read the blogs/youtube and removed the radio after purchasing the radio removal tool from Walmart (~$6)
      - Found the fuse behind the radio was blown (10Amp), replaced it with one from local auto store
      - now the radio is ON but prompting for **CODE**, thanks to Renntech got the code to unlock it
      - Entered the CODE now the radio seems to be working but NO audio !!!
      - Looked at the service manual and fuse details since some of the blogs pointed me to fuse box and the fuse for the AMP. 
      - The 7.5Amp fuse was blown on the fuse box ROW D and Number 9 (D9). So while I am waiting for the fuse to arrive (from amazon) I - - had a 15AMP fuse handy and tried to insert it but there was a spar when I tried to do that !!!, guessing a short to the ground some where down the wires.
      - So started to remove Audio related modules from the front of the trunk. And found two Bose modules one seems to be the AMP big black casing with lot of vent holes. And there is another module don't know what it is. After I disconnected the wiring connectors from these modules I was able to insert the D9 fuse in the fuse box. So I am guessing there is something is wrong with the AMP or the other Bose module.
       
      Did you see similar problem ? What are these two modules for ? there 3 connectors going to these two modules. Any ideas on how to fix it or get it repaired (i don't know which one of these two has the issue or short)
       


    • By Fruitypuddinpops
      Have a 2005 base package cayenne without the Bose package, like to know if the wiring is there to add the Bose factory subwoofer and amp for it.  And would i also have to change the head unit to the Bose as well to get the full benefit of it.  Dont want to go to all the trouble just to add a little bit more low end to it, but would like to know before i buy a subwoofer for it.
×
×
  • Create New...

Important Information

We have placed cookies on your device to help make this website better. You can adjust your cookie settings, otherwise we'll assume you're okay to continue.