Performing system test

WARNING: This page does not describe the selected car, but rather 7 other vehicles, including the 2005 Porsche 911, 2004 Porsche 911, 2003 Porsche 911, 2002 Porsche 911, and 2001 Porsche 911. However, it is still accessible from the selected car via links, so may be relevant.

Connect and switch on the Porsche System Tester 2.
Select air conditioning and menu item System test.

The following conditions must be observed for the system test:

Vehicle speed < 10 km/h (6 mph)
Engine start detected and 10 seconds elapsed since engine start
Terminal 15 supply voltage OK
5-volt supply voltage OK
Engine temperature < 110°C
Outside temperature 3°C

The following tests are performed:

Display of all segments in the control module
The drive motors are traversed across the entire range once
The measured positioning travel is subjected to a plausibility test and stored as a fault if necessary
Two different voltage values are set on the fresh-air blower and tested
The A/C circuit is tested via the DME
All fault paths are tested and any faults are stored

Basic adaptation is carried out after the system test has been completed. The display must no longer flash.