ASD Relay location

Chrysler uses a very reliable automatic shutdown (ASD) relay, or on some models a separate fuel pump relay. Here is a wiring diagram to help you find the problem. Check out the diagrams (Below). Please let us know what you find.

Here is the location. Below.

The fuel pump or pump relay is powered by the ASD relay. The Engine Computer turns that relay on for just one second after turning on the ignition switch, then again during engine rotation, (cranking or running). If you hear the pump run for that first one second but it doesn't run during cranking, suspect the camshaft position sensor first and the crankshaft position sensor next. It's the pulses from those two sensors that tell the computer the engine is rotating.

If they jumpered the relay and there was voltage to the pump connector, there's your proof the fuse is okay. No need to go testing something you know is good.

The relay itself could be bad but that's not very common. It could have pitted or burned contacts or the coil could be open. A simple way to identify that is by switching it with another one like it.

Here's what you need to know from my previous reply:

The Engine Computer turns that relay on for just one second after turning on the ignition switch, then again during engine rotation, (cranking or running). If you hear the pump run for that first one second but it doesn't run during cranking, suspect the camshaft position sensor first and the crankshaft position sensor next. It's the pulses from those two sensors that tell the computer the engine is rotating.

To say it another way, after that first second, the fuel pump should not be running until you crank the engine.

Have you checked for spark? If you got hung up on the first thing you found not working, the fuel pump, and didn't look at the other systems, you'll be troubleshooting the wrong circuit.

Dandy. You don't have a fuel pump problem.

Look for the dark green / orange wire feeding the ignition coil pack, any injector, or either small wire on the back of the alternator. Use a test light to check for voltage there. A digital voltmeter might not respond fast enough to see what you need to see. The test light should light up for just one second when you turn on the ignition switch, then it will go back off. If that doesn't happen, we have to look at the ASD relay circuit.

Once the test light goes off, it should turn back on when you crank the engine. If it does not, we have to look at the camshaft position sensor and crankshaft position sensor circuits.

Have you checked for diagnostic fault codes yet? They will get you into the circuit that needs to be diagnosed.