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Home >> Chrysler >> 1990 >> Imperial >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - Basic Testing >> Auto Shutdown (ASD) Relay >> All Except 3.3L

All Except 3.3L

When distributor signal is not present with ignition switch in RUN position, ASD relay turns off power to electric fuel pump, fuel injectors, ignition coil and O2 sensor heating element.