Auto Shutdown (ASD) Sense

PURPOSE
A 12 volt signal at this input indicates that the Automatic Shut Down (ASD) relay has been activated.

OPERATION
The ASD relay is located in the engine compartment. It is used to connect oxygen sensor heater element, ignition coil, alternator field winding and fuel injectors to 12 volt + power supply.

This input is used only to sense that the ASD relay is energized. If the PCM does not see 12 volts at this input when the ASD should be activated, it will set a Fault Code.