Hi everyone, I have a 2006 CTTS with 4-zone AC. The rear air only blows warm on every rear vent (both B-pillar vents and both center console vents), but the air flow speed can be changed and turned on/off . I started running an output test using my Durametric tool. The SW ran through the first test fairly quickly, but the second test ("Drive Motor for Temperature Valve") ran for 12+ minutes and didn't seem to be changing any parameters after the first 6-7 minutes. Is this normal? How long does it typically take to run the AC output test? I clicked 'next' after 12-13 min and the SW seemed to stop responding.

I already have an error code for '11', which is the rear AC unit according the Porsche Workshop Manual. Maybe the Durametric is repeatedly trying to send commands to the unit but it is unreachable and that's why it doesn't seem to be doing anything? How should I proceed with the AC troubleshooting?


Thanks!