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Home >> Jeep >> 2007 >> Compass Limited, AWD, Standard >> Repair and Diagnosis (Single Page) >> Accessories & Equipment >> Communication Devices >> Electronic Control Modules (Service Information) >> Engine Control Module >> Operation >> Engine Control Module (ECM) >> ECM Operating Modes >> Engine Start-Up Mode
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Engine Start-Up Mode

The ECM uses the engine temperature sensor and the crankshaft position sensor (engine speed) inputs to determine fuel injection quantity.

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