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Home >> Dodge and Ram >> 1991 >> Caravan C/V, Van Cargo Extended, AWD >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - Basic Testing - Gasoline >> Auto Shutdown (ASD) Relay >> 3.3L

Auto Shutdown (ASD) Relay: 3.3L

When there is no camshaft or crankshaft sensor signal with ignition switch in RUN position, ASD relay turns off power to electric fuel pump, fuel injectors, ignition coil and O2 sensor heating element.