RAM 2500 Truck 4WD V10-8.0L VIN W (1997)
Ignition Relay: Description and Operation
As one of its functions, the Automatic Shutdown (ASD) relay will supply battery voltage to each of the 5 independent ignition coils. The ground circuit
for the ASD relay is controlled by the Powertrain Control Module (PCM). The PCM regulates ASD relay operation by switching the ground circuit
on-and-off.
