Dakota 2WD V6-3.9L VIN X (1997)
Automatic Shut Down (ASD) Relay: Description and Operation
CIRCUIT OPERATION
Automatic Shut Down (ASD) Relay
Circuit A16 from the Power Distribution Center (PDC) supplies battery voltage to the contact side of the Automatic Shut Down (ASD) relay.
In the START or RUN position, the ignition switch connects circuit F18 from the 10 amp fuse in the junction block to the coil side of the ASD
relay. The Powertrain Control Module (PCM) provides the ground path for the coil side of the relay on circuit K51. Circuit K51 connects to
cavity C3 of the PCM.
When the ASD relay energizes, it connects circuit A16 and circuit A142. Circuit A142 splices to supply voltage to the fuel injectors, ignition coil,
and heated oxygen sensors. Circuit A142 also splices to cavity C12 of the PCM. This input tells the PCM the ASD relay has energized.
