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Description NCEC0349 SYSTEM DESCRIPTION NCEC0349S01 Sensor Input Signal to ECM ECM function Actuator Crankshaft position sensor (POS) Engine speed EGR control EGR volume control valve Mass air flow sensor Amount of intake air Engine coolant temperature sensor Engine coolant temperature Ignition switch Start signal Throttle position sensor Throttle position Vehicle speed sensor or ABS actuator and Vehicle speed Battery Battery voltage This system controls flow rate of EGR led from exhaust manifold I Extremely light load engine operation I Mass air flow sensor malfunction I Engine idling I Low engine coolant temperature I Excessively high engine coolant temperature I High-speed engine operation I Wide open throttle I Low battery voltage I Engine starting COMPONENT DESCRIPTION NCEC0349S02 EGR Volume Control Valve NCEC0349S0201 The EGR volume control valve uses a step motor to control the flow SEF551W SEF552W DTC P1402 EGR FUNCTION (OPEN) (IF SO EQUIPPED) QG16 I 18DE Description EC-305 |