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Home >> Oldsmobile >> 1991 >> Cutlass Supreme Base, 2D Convertible >> Repair and Diagnosis (Single Page) >> Engine Performance >> Theory and Operation >> Engine Controls - Theory & Operation >> Computerized Engine Controls >> Input Devices >> Park/Neutral Switch (P/N)
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Park/Neutral Switch (P/N)

This switch is connected to transmission gear selector. The switch signals ECM when transmission is in Park or Neutral. Information from P/N switch is used by ECM for determining control of ignition timing, converter clutch and idle speed. To check function of P/N switch, perform functional check of switch. See the appropriate SYSTEM/COMPONENT TESTS article in this section.

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