I am trying to check to see if my fuel pressure sensor is good. I unhooked the electrical cable that goes to the sensor, but I am unsure what to do now. The service manual doesn't mention anything about this. Somebody told me about checking for a 2.5v using a multimeter (which I have) but how am I supposed to check for any voltage if my battery has to be unhooked?
I have read that sometimes the harness gets worn out and that can be a cause for my CEL code P0453, but I'm not even sure which part is the harness and how to check if that is what indeed needs replacing instead of the expensive sensor.
I have provided a picture of what I'm looking at.
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