Porsche 928 Workshop Manual page 608

928 54
928 GT
Fuel System I Electronic Control
28
c$
tt
"3 -
G
UI
-
bm
-
Tester
k-2
-
T
a
i
%
e Y
2
ii C
5
g
E 0
-
0)
-
-
G -
E
ii
.s
5
s
:, 0
Fault code 2-
5 C
z
E .-
2 5
'p
s 'Z
.I? E
ii E
I- -
=
8
E
%
2
3
5
8
2
2
E
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-
m
v
s
E
2
2
=
2
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2
2 -
*
2 E
&
x 9
=
I= -
N
02
;Fi
E
;=
L52
I-L
-
x
Test point
Engine will not start
Engine hard to start
Irregular idling
x
x x
x
-
Poor pick-up x x
x
-
x
- -
Misfiring x x
-
x
High fuel consumption
x x
x
-
x
x
-
x
-
x x x
Low power output
Engine hesitation
x x
Poor hot starting
- -
Diagnosis not possible
D20-3
EZK-Diagnosis/Troubleshooting
Printed in Germany - XXV 1990