Vehicles after change point in 1982
Unscrew shield.

2312020 - click to zoom
 
Unscrew screws of spped and reference mark sensors (D an B) and pull out sensors.
Installation:
Mark new reference mark sensor (B) with a piece of tape.

63012195 - click to zoom
 
Pull off plugs on speed sensor (D) and reference mark sensor (B).
Press plug of sensor lead out of holder.
Installation:
Plug marked with tape belongs to gray plug.

73312010 - click to zoom
 
Pull of protective sleeve (1).
Lift out clip (2).
Installation.
Coat seals with Molykote paste.
Keep grease and dirt off of face surface on sensors.

73312054 - click to zoom
 
Testing:
Disconnect plug.
Connect BMW service test unit to operating instructions (M 06/22/23).
Use universal test leads.
B = Reference mark sensor
D = Speed sensor

73312010 - click to zoom