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Home >> Geo >> 1990 >> Storm Base, Standard >> Repair and Diagnosis (Single Page) >> Engine Performance >> Theory and Operation >> Engine Controls - Theory & Operation >> Computerized Engine Controls >> Input Devices >> Park/Neutral Switch On A/T Models
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Park/Neutral Switch On A/T Models

On A/T applications, the ECM monitors switch position and receives a voltage signal when transaxle/transmission is in any forward or reverse gear. The ECM uses this input signal to help control of fuel injectors, idle speed control and EGR valve (Storm and Storm GSi models).