No fuel pressure at the rail

2010 CHEVROLET COBALT
97,000 MILES • 2.2L • 4 CYL • 2WD • MANUAL
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JOEEGER52
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I'm only getting 2.4V at the fuel pump relay, coming from the ECM. Would this indicate that the ECM needs replaced? Also, where is the ground G402 located? Everything I found, says it's located near LR speaker. I can't find it anywhere. Thanks in advance!
Dec 8, 2019 at 7:45 PM
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KASEKENNY
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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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Dec 9, 2019 at 5:42 PM
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JOEEGER52
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I do not have access to a scanner to get the codes. I'm going to look for that ground. If that's not it, I guess it'll get towed to a garage. I appreciate your time and help. Thank you
Dec 9, 2019 at 6:21 PM
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KASEKENNY
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Okay. Please keep us updated on what you find or if you want to use us as a second opinion of what a shop finds. Thanks
Dec 9, 2019 at 6:41 PM