ECU not powering up???! Where to start? 02 Ram

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Akodo

Junior Member
Joined
Sep 27, 2021
Posts
11
Reaction score
2
Location
Jakcson, MI
Ram Year
2002
Engine
5.9
So, I installed a new engine in this truck. 5.9L. At first I had no crank, but after cleaning the main power feed to the fuse block, and running a new ground to the starter, I can now turn the motor over all day long. But the fuel pump isnt coming on, nor the injectors, and no spark. All of which, of course, is controlled by the ECU. So I tried to hook my code scanner up, and I cant talk to it! I can read the ABS, BCM, etc. Pretty much anything but the powertrain controller. It SEEMS like it isnt even powering up. How in the world do I trouble shoot this? Any ideas? What could cause these issues besides the PCM?
 
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