Porsche 928 Workshop Manual page 508

28
Ignition System
928
Measured value between 485 and 100 ohms?
I
I
Y-
9. Check sensor coil with sensor line for ground,
between terminal I and ground: and terminal
31 d and ground.
Infinite resistance2
1 "0
10. Check sensor system for mechanical damage.
Visual inspection: gap between rotor and
stator>
Pull off sensor lines from distributor and repeat
test on sensa system.
Resistance between 485 and 100 ohms?
1
Y==
"0
Replace sensor line.
Replace distributor.
Pull off sensor line from distributor and repeat
test on sensor system.
Infinite resistance?
I
ye=
Replace sensor line.
J
no
Replace distributor.
l
28 - 16
Troubleshooting Electronic Ignition System
Printed in Germany