This could be the ECM however, you are on the right path with checking the ground.
Here is a test that you can run through with this but if you have a loose ground then it can cause low voltage. However, 2.4V is very low and most likely not a ground issue.
Let's start with checking for codes and then run through this test and I am sure we will find the issue. Let me now what you find for codes and we can go from there. Thanks
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Monday, December 9th, 2019 AT 5:42 PM