Operation CHARM: Car repair manuals for everyone.

Engine Speed/Position Pulse Generator

Engine Speed/Position Pulse Generator:

Check function:

•D• 200 - The engine speed signals can be monitored at starting speed or when the engine is running.

Further tests are possible with the multimeter test 23/24. Connect terminals for the oscilloscope at the component connector and crank engine. An AC voltage characteristic curve with positive and negative half waves should appear on the display screen.

Resistance test:

The resistance can be measured directly at the component connector (at the connector strip for injector valves). Refer to Diagrams / Electrical for wiring diagram. For technical data, see Technical Data.

Possible cause:

If wire, plug connection or resistance are OK:

Check distance of the pulse generator to the incremental wheel on the vibration damper -0.15 to 1.5 mm.

Setting at adjustable holder - 1.0 +/- 0.3 mm.