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Home >> Jeep >> 2012 >> Compass Limited, AWD, Standard >> Repair and Diagnosis >> External Pages >> Different car >> Section 17 (Electronic Control Modules (Service Information)) >> MODULE, Engine Control, Diesel >> Operation >> Operation >> ECM Operating Modes >> Engine Start-Up Mode
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Engine Start-Up Mode

WARNING: This page is about a different car, the 2009 Jeep Liberty. However, it is still accessible from the selected car via links, so may be relevant.

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