As of model year 2002 · 80-D55Control module function

911 Carrera (996) Air conditioning H02 80 As of model year 2002 80-D55Control module function Replacing the air-conditioning system regulator and flashing display Note! If the air-conditioning system regulator is replaced, the display flashes after the ignition is turned on. In this case, the system test must be carried out first. The air-conditioning system regulator hereby learns the upper limit stops of the drive motor and the entire system is checked simultaneously! System test Special diagnosis routines can be run with this menu item. 1. Using the Porsche System Tester ll No. 9588 select menu item’System test’. The following conditions must be observed for the system test: ♦Vehicle speed < 10 km/h ♦Engine start detected and 10 seconds elapsed since engine start ♦Terminal 15 supply voltage OK ♦Sensor power supply (5 V) OK ♦Engine temperature < 110 °C ♦Outside temperature > 3 °C ♦No fault stored ♦Engine idling 2. When the conditions mentioned above have been met, continue with >> button. 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. ♦Two different voltage values are set on the fresh-air blower and tested. 8001 Control module function 80-D55 page 1 Printed in Germany – 78, 2003 SGF_H02