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EGRC-Solenoid Valve SYSTEM DESCRIPTION Camshaft position sensor (TDC) E Engine speed ECM Air conditioner switch E Air conditioner “ON” signal E EGRC-solenoid valve Engine coolant temperature sensor E Engine coolant temperature Atmospheric pressure sensor E Atmospheric pressure Mass air flow sensor E Mass air flow The ECM receives signals sent from the engine coolant tempera- Engine coolant temperature °C (°F) Load EGRC-solenoid valve EGR valve Amount of EGR gas Below 70 (158) Any OFF (Closed) Fully closed — Above 70 (158) Low load ON (Open) Fully open Large High load OFF (Closed) Fully closed — COMPONENT DESCRIPTION The EGR control solenoid valves control vacuum pressure act- Malfunction is detected when .... Check Items (Possible cause) ● EGRC-solenoid valve A circuit is shorted. ● Harness or connectors ● EGRC solenoid valve A SEF240PH To control valve To intake Vacuum TROUBLE DIAGNOSES 16 CD20T EC-129 |