Dodge Cummins RAM Truck Gear Position Codes
This truck has had a rough life. After an engine fire the shop replaced selected wire looms and the transmission. After the work was done and the truck running, it was found that the gear position and water in fuel circuit were throwing codes. After removing and inspecting all the wiring looms and not finding any shorts, the PCM was condemned. A used PCM was supplied. I came in and programmed the PCM. After the programming and the immobilizer reset, the truck started and ran. The transmission did not shift. I soon discovered that the wrecking yard sent a PCM that was suited for a manual transmission.
I wanted to see if I could read the information off the old PCM to flash to another donor. I soon found out that the particular PCM is very hard to read the calibrations from. While poking around in the PCM I found a chip that did not look right. It seems the smoke got let out of it.
The chip is obsolete at DigiKey and Mouser. It would be nice to be able to just exchange the chip and be done. It seems that the CM2200 controllers are selling high and hard to find.
-Mike