Good morning! Thanks in no small part to your guidance, I recently completed an engine rebuild and transmission swap on my 3.8L 2006 Grand Caravan SXT. My problem now is that it won't start.
I did a lot of investigating and learning before I reached my current point of befuddlement, so here's what I have:
I found some information suggesting this could indicate a bad PCM, but also found a post where a couple had the same symptoms, replaced the PCM, and the van still wouldn't start. I'm not afraid to spend the money, but I also don't like throwing spaghetti at the wall without a good reason.
Attached are the diagrams I used for reference and the notes I took myself. Your help is very much appreciated!
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![58434]( "58434")
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![58437]( "58437")
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![58439]( "58439")
I did a lot of investigating and learning before I reached my current point of befuddlement, so here's what I have:
- No start, no crank
- Battery fully charged
- Relays click when key turns to start
- No boxes on range indicators on dash
- TRS probed and reads correctly
- Wiring harness from transmission to PCM probed and is good (see attached, I couldn't find a wiring diagram so I pieced together my own)
- TRS sense circuits (T42, T41, T3, T1) receive power when ignition is on
- Transmission case is grounded
- Shift cable is properly adjusted
- EATX relay tested, good
- EATX relay trigger circuit receives no power
- When jumped, EATX relay socket supplies 12V to solenoid connector supply pin
- Battery disconnected for a month during rebuild
- Engine bay cleaned with hot water and degreaser before engine or trans reinstall
- Red dot on dash illuminates with key on
- Key fobs are black
I found some information suggesting this could indicate a bad PCM, but also found a post where a couple had the same symptoms, replaced the PCM, and the van still wouldn't start. I'm not afraid to spend the money, but I also don't like throwing spaghetti at the wall without a good reason.
Attached are the diagrams I used for reference and the notes I took myself. Your help is very much appreciated!
