Archived 47rh pcm

[PetesonM]

Can someone share with me the correct wire diagrams for the PCM and any nessesarry control wires for a 95 Dodge with a 47rh?
Truck had new trans built by reputable builder, trans function was correct on dyno but no 3-4 shift in truck or lock up. If put on switch truck will 3-4 shift and lock up with manual switch. Any help appreciated, thanks.

 

[GAmes]

Most of the wiring is in the factory service manual. https://www.genosgarage.com/product/dfsm95-print/dodgeram-factory-service-manuals
Also of use is the powertrain diagnostics manual, a book that is out of print and difficult to find.

 

[Bob4x4]

A quality scanner that can read trans dtc's and veiw live data is what you should be using to diag your issue.IIRC the 95 should have a temp sensor,when it fails you loose overdrive.It's been a few years since I have played with any rh trans but that is what comes to mind

 

[PetesonM]

Tested some things tonight and unhooked the manual 4th and tclu switches. Tested tps output and voltage reads 4.950 bypassed tps with a pot and voltage still will not go below 4.95. Not sure what is going on there, thinking there may be voltage back feeding??

 

[Bob4x4]

check for open ckt