Porsche 928 Workshop Manual page 568

926
Ignition System
28
Checking the transmission protection switch (automatic transmission)
From Model 87 onwards, transmission
number
16 H 00 564 USA
16 H 10 447 Rest of world
Note
The transmission protection switch is located
on the left-hand side of the transmission,
viewed from the driving seat.
1. Separate the 3-pole connector in the spara-
wheel well.
2. Connect voltmeter sleeves to terminals 1
and 2.
3. Switch on ignition.
Display: approx. 5 V
4. Connect ohmmeter plugs to terminals
1 and 2.
Note
The switch Is checked with the engine
running. Apply the handbrake and press the fo-
otbrake. Observe safety regulations.
Display in positions P and N:
-Ohm (switch open)
Display In position D:
c 1 Ohm (switch closed).
If these values are not indicated, measure at
the switch directly, replace if necessary.
Checking the transmission protection switch (automatic transmission)
Printed in Germany - XXII. I!389
28 - 71