Why does my ASD fuse keep blowing?
Very often a blown ASD/FP fuse is caused by a worn pump thats pulling too many amps. But be aware that the Fuse also powers the PCM, coil and injectors OBD-II connector and surge solenoid, so a short in any to those wiring harnesses could cause the fuse to blow.
Why does my ECM fuse?
Fuel Pump. Another cause of an ECM 1 fuse consistently blowing is a fuel pump problem. When the fuel pump begins to fail it overheats, causing it to drain more amperage (amp); if the amps exceed the amount of amps the ECM 1 fuse allows, the fuse will blow. Replacing the fuel pump should correct this problem.
What is the ASD fuse for?
The Automatic Shutdown (ASD) fuse is a vital electrical component in the electronic engine management systems, consisting of both the ignition and fuel systems. This component is very important in maintaining the functionality of a vehicle.
How does the automatic shutdown ( ASD ) relay work?
Consequently, The (PCM) operates the automatic shutdown (ASD) relay, by switching its ground circuit ON and OFF. The (ASD) relay will be shut-down; meaning the 12-volt power supply to the (ASD) relay will be deactivated by the (PCM); if the ignition key is left in the ON position.
What are the symptoms of a bad ASD relay?
One of the most common symptoms of a bad (ASD) relay is an engine that will start. But, Stalls almost immediately, or at random times. The (ASD) relay supplies power to the vehicle’s ignition coils and fuel injectors.
What causes a car to stall with an ASD?
If the (ASD) is having any problems that interfere with its ability to supply power to the injectors; coils, or whatever other circuits it may feed; then those components may not function properly and problems may arise. A car with a failing or faulty (ASD) relay may stall immediately after starting, or randomly while operating.