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Home >> Cadillac >> 2010 >> STS 3.6 V, AWD >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 10 (Engine Controls And Fuel - 4.6L (LH2) - Description And Operation) >> Description and Operation >> Electronic Ignition System Description >> Crankshaft Reluctor Wheel

Crankshaft Reluctor Wheel

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The crankshaft reluctor wheel is part of the crankshaft. The reluctor wheel contains a pattern around the circumference of the wheel consisting of 58 teeth and a reference gap. Each tooth on the reluctor wheel is spaced at 60 tooth spacing, or 6 degrees apart from each other with 2 missing teeth for the reference gap. The engine control module (ECM) uses the teeth and reference gap to determine the crankshaft position (CKP) and speed.

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