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Home >> Jeep >> 1994 >> Wrangler Sahara, Standard >> Repair and Diagnosis (Single Page) >> Engine Performance >> Theory and Operation >> Engine Controls - Theory & Operation >> Computerized Engine Controls >> Input Devices >> Park/Neutral Switch
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Park/Neutral Switch

On vehicles equipped with automatic transmission, a gear position indicator signal is sent to the PCM when gear selector lever has been moved to the Drive range. This signal comes from the park/neutral switch (neutral safety switch on AW-4 transmission) and allows the PCM to adjust idle speed, fuel injector pulse width, and ignition timing advance.

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