Porsche 928 Workshop Manual page 573

926
Ignition System
28
Checking the ignition circuit monitoring relay
Note
The ignition circuit monitoring relay is fitted to
the mounting plate for the LH and EZK control
units.
6. The resistance between El and E2 is
approx. 5 - 10 G(measured at the disconnec-
ted relay socket).
Si~yais at the ignition circuit monitoring
1. Terminal 31 - ground
2. Ground must be present at terminal AL
when the ignition is switched off.
3. Battery voltage must be present at terminals
87, 15, Al and A2 when the ignition is swit-
ched on.
4. Battery voltage must be present at terminals
61 and AL when the engine is running.
5. A voltage value of approx. 2.7 V must
be present at both terminals El and E2
when the ignition is switched on.
Checking the ignition circuit monitoring relay
Printed in Germany - XXII, 1989
28 - 77