Crankshaft Position Sensor: Service and Repair

Replacing pulse generator on crankshaft (M54)

Turn off ignition.
E46 only: Remove reinforcement plate on front axle support.

CAUTION!
The section "Removing and installing reinforcement plate on front axle support" contains important installation instructions.


If fitted:
Remove vacuum tank for exhaust flap.

All models:

NOTE: Installation location of pulse generator for crankshaft is underneath starter motor.





Unlock plug (1) and detach from pulse generator for crankshaft.
Release screw (2).
Remove pulse generator (3).

NOTE: For a better overview, this work step is shown on an engine that has been removed.





NOTE:
Interrogate fault memory of DME control module.
Check stored fault messages.
Rectify faults.
Then clear fault memory.