Heating diagnosis 911 Carrera (996) · System test

Heating diagnosis 911 Carrera (996) System test Special diagnosis routines can be run with this menu item. The following conditions must be observed for the systemtest: Vehicle speed < 10 km/h Engine start detected and 10 seconds elapsed since engine start Terminal 15 supply voltage OK 5-volt supply voltage OK Engine temperature < 110°C Outsidetemperature>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 plausibilitytest and stored as a fault if necessary Two different voltage values are set on the fresh-air blower and tested TheNC circuitis tested via the DME All fault paths are tested, and any faults are stored After the system test, the heating/air conditioning reverts to the state it was in before the test. 80 -D 36 80 01 Diagnosis/troubleshooting, heating 99680Dl Printed in Germany -11, 1998