Porsche Boxster Technical Manual page 31

Isis
24
-
1 -Secondary air pump
2 2 -Vacuum reservoir
(only on Tiptronic and OBD II)
3 -Overflow valve~
4 -Check valve~
5 -Vacuum valve
6 -Check valve
7 -Throttle part
--.,e) 6 8 -IACV (idle speed positioner)
I 9 -Throttle potentiometer
10 -Hot film mass air flow sensor with intake
air temperature sensor
11 -Oxygen sensors ahead of the catalytic
converter
12 -Oxygen sensors behind the catalytic
converter
13 -Pulse sender (reference mark sensor/rpm
sender)
1
Components No.1, 3, 4, 6, 12 are installed
only on OBD II vehicles.
~
-
24 -D 17
98624Dll