2001 Dodge Grand Caravan wiring problem

My manual shows 87 and 86 tied together so they both should have voltage at the same time. I've heard stories about loose or corroded rivets on the brass strips connecting the terminals under the fuse box but I've never run into that myself.

I'm not sure what you mean by a "weak ground" for the fuel pump relay. 86 doesn't go to the fuel pump. 30 is the relay contact that goes to the pump. That one should read continuity to ground. If you measure it with an ohmmeter, you can expect a reading of about one or two ohms.

I'm working on drawing some diagrams for you. I find it much easier figuring out how a circuit works from looking at them vs. Reading a written description. I'll post it as soon as I have something of value drawn up.

See how far these get you.

If you're running that hot wire to the socket without the relay installed, that has to be terminal 30. It is the lower part of the two terminals that form the letter "T".

To add to the misery, I have an '01 here right now and just went out and checked, and my drawing up higher is wrong again so I'll be changing it for the third time. Terminals 85 and 86 are reversed. Here's the drawing again with the numbers corrected. If you want to double-check, the numbers are molded on the bottom of the relays.

Okay, NOW tell me which one you're applying 12 volts to. 12 volts to terminal 30 should make the pump run without the relay installed. 12 volts to terminal 86 with the relay installed will not activate it only because 85 also has to be grounded for the relay to turn on, and it gets grounded by the circuitry inside the Engine Computer. Now that the drawing is corrected, (sorry), see if 12 volts appears on terminal 86 when the ignition switch is turned on.

Some vehicles, (Dakotas, for one), use one fuse box, then they plug in different "joint connectors" to match the engine size and set of optional equipment on the vehicle. I don't see those joint connectors on the van I have here.

I double-checked the relay terminals. This is getting frustrating. Now that I corrected 85 and 86, 30 and 87 are also turned around. My drawings are correct for a 2002 model. I just checked the 2001 van that I have here and the 12 volt feed is terminal 30 for both relays. That means if you remove the pump relay, and jump 12 volts to 87, the pump should run. I was going to post a corrected diagram, ... Again, but I don't have a 2001 service manual so I can't tell if it will have the same wire colors. Instead, in the previous two drawings, switch 30 and 87 for both relays. 30 are the ones connected to the battery / fuse.

I can't post diagrams and I'm on a backup computer. The site stopped working on my main computer.

If the crankshaft position sensor isn't working, the ASD relay will not be turned on. The Engine Computer must see pulses from the cam and crank sensors before it will turn the ASD relay on, however, if the relay circuit is working, it WILL turn the ASD relay on for one second when you turn the ignition switch on.

I just finished six hours of copying diagrams from the Chrysler web site. Now I have to figure out how to convert them from MS Word files to jpegs that will post here. This was so easy on my main computer but that one uses Mozilla Firefox, and this site stopped working with Firefox last week. As soon as I can figure out how to convert them, I should have some diagrams for you. Yippee! Internet Explorer is so miserable to use after getting used to Firefox.

Okay, see how far you get with these. This is every diagram related to "Fuel / Ignition" and one for "Power Distribution".