Pulse Generator - Engine Speed/Position

Pulse Generator - Engine Speed/Position:

The DME does not output an ignition and injection signal if the engine speed signal is not applied.

Check function:

•D• 2 - The engine speed signal can be monitored at starting speed or when the engine is running.

Further test options are possible with the oscilloscope. •M• 23/24. Disconnect terminals at the component connector and start engine. An alternating voltage characteristic curve with positive and negative half wave should appear on the display screen.

Possible cause:

If wire, plug connection and resistance are OK~: Check distance of pulse generator to the increment wheel on the vibration damper.

Nominal value: 0.15 to 1.5 mm.