I have a 2006 Dakota V8 SLT. Every time I try to start my truck the ASD fuse blows... I've replaced a fuel injector harnesses and a coil harness that looked a little chewed, the relays, put a new battery in... I am at a complete loss. I did the key dance and got codes for the PCM and ASD.. Any help at all with this would be GREATLY appreciated! I need to get her running. This has been a problem for months.

 

The ASD relay supplies voltage to the injectors, coils and heater elements for 02 sensors.

Unplug the coils, injectors and 02 sensors to see if the fuse blows again. If it does you have a short in the harness somewhere. If not, one of those parts has failed. You can use a DVOM to check for dead shorts or plug them back in one at a time and see which one blows the fuse.