Auto Shutdown (ASD) Relay
NOTE:
If ASD relay is suspected of causing a fuel or ignition system malfunction, use Diagnostic Readout Box II (DRB-II) to diagnose ASD relay. See G - 5.2L TESTS W/ CODES article in the ENGINE PERFORMANCE Section.
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.