REPLACING COOLANT LEVEL SWITCH
Pull off plugs and unscrew level switch.
Installation: Check coolant level, correcting
if necessary.

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Testing:
Connect ohmmeter (e.g. BMW service test unit
M 06).
Push float against stop in direction of arrow = oo ohms.

73061132 - click to zoom
 
Vehicles after change point in 1982
Pull off plug.
Unscrew level transmitter.

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Checking:
Connect ohmmeter (multimeter 06 of BMW service tester) to operating instructions.
Move float in direction of arrow against stop.
Ohmmeter should display °° ohms.

73061132 - click to zoom