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Home >> Porsche >> 1986 >> 944 Base, Automatic >> Repair and Diagnosis >> Engine Performance >> System >> DME System >> Operation >> Data Sensors >> Reference Mark Sensor

Reference Mark Sensor

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The reference mark sensor is located on crankcase flange. This sensor detects crankshaft position in relation to TDC, and sends this signal to the CU. It is triggered by a bolt cemented into the flywheel.