Porsche 928 - WORKSHOP MANUAL 1977 Workshop Manual page 440

87
Air Conditioner 928
15.Disconnect cable plug. Connect
ohaaneter to terminal 13 and ter-
minal 14.
Move temperature regulator slide
to 18.
Reading: approx. 750 + 100 Ohm
-
Move temperture regulator slide
to 30.
Reading: approx. 1750 + 100 Ohm
Note:
The resistance must change by
approx. 1000 Ohm.
If the values
at terminals 1, 2, 6,
9,
11, 12, 13, 14 and 15 are not
attained, the operating switch is
defective and must be replaced.
If the values are not attained at
the other terminals, check the
wiring using the circuit diagram.
a
87 - 112 Checking Operating Switch Printed in Germany