Good day to all. This is my first post and first question to the members.
I live in the Bahamas, here is no Dodge dealer and I bought a Grand Caravan 2003, 2 years ago. The car served me till a few months ago.
Engine ran hot. I could drive further with adding coolant. A few days later, same thing. I found that the water was leaking to the oil.
The car ran very hot and I stopped it. After 30 minutes wait, it wouldn't start anymore.
Took the heads of and found cracks, and also rests of liquid seal, that had the engine running for the 2 years. The liquid seal probably served the time.
I bought 2 new heads and installed these according the Haynes manual.

The car didn't start anymore. I had the code - bad CPM and bought an exchange CPM. The car ran on it for a few minutes and I noticed the injector rack leaking. Ordered injector seals and fixed it again. (Each US order takes many weeks to reach here. The car is already 4 months dead.)

I tried to start but nothing happened. In the fuse and relay box a 20 amp fuse that powers the fuel pump circuit blew. With the CPM connected that + got a ground. A friend told me the CPM is gone.

I flew back to the US to get it fixed and there they told me something was wrong with the wiring. They said the top harness was bad. I opened it and found no shorts. I need a diagram with the CPM connections on the 2 multi-connectors and if possible also the diagram of the electronics of the CPM itself. Haynes has nothing in it.

The CPM is a 04745860 584011 29. I am afraid when I connect the CPM it will be destroyed again. I need to find this by myself because here are no
qualified people to handle this.
Your help is much appreciated. Thank you.

 

Do you mean the engine controller or PCM? Are you sure you didn't pinch a harness putting the heads back on?

 

Yes. I didn' t compromise them. Worked very carefully.

 

To include all of the PCM diagrams would be like 40 -50 diagrams. Is there a specific area you need? Also need to know if you have an SBEC or NGC, you can tell by how many connectors the PCM has.

 

Dear Tizzy1,
Thanks for your reply. In the mean time I became member of all- data that has a good documentation about the missing diagrams.
If you might have the electronic diagram and/or print plate outfit of the secret
aluminium box- it is well appreciated. It might tell me what went wrong.

 

There is no internal module diagrams that I have access to, sorry.

 

The repair service told me that they would charge next time the computer goes bad. I think I will break the seals to see if they have changed output transistors and to which pins they relate.
I find it very strange: the CPM worked for a few minutes. I stopped the engine,
3 weeks later when I had the parts, i changed the injector seals and afterwards it didn't work anymore. They said it is the wiring.
I cut a complete harness, didn't find no problems, - Just wonder if the CPM has been repaired well? Thank you.