Porsche 928 Workshop Manual page 59

03
Maintenance, Self-diagnosis
928
inltiate the full load contact testing step.
Display:
Initiate the testing step for air-conditioning con-
trol to the LH control unft (terminal 15).
Display:
Press the accelerator pedal down slowly until
the full load position has been reached. At the Set the air-distribution slide switch to up /
same time, the LED must go out and the follow- down.
ing display will appear.
Display:
Switch on the air-conditioning system briefly
(AC pushbutton). The LED must go out and
the following display will appear.
71 Display:
If this is not the case, there is a fault in the
area of the full load contact (see full load con-
I
I
tact trouble-shooting).
if this is not the case, there may be a fault in
the area of the air- conditioning system's
wiring. In the event of an error, check with
reference to the circuit diagram.
w- 10
Functional check of actuator and input signals
Printed in Germany - XX, 1988
a