Hi,
I just read through the schematics and the fuel pump relay and fuse are integral to the PCB. PCB stands for printed circuit board and is not serviceable.
As a result, we need to test a different way. We need to determine if there is power making it to the pump, but before you do that, I want to check fuse B+5 fuse in the engine room junction box. This is a 60-amp fuse that supplies the PCB with power. If you look at pic 3 below, I attached a pic of the under-hood fuse box and circled the B+5 fuse.
Here is a link that explains how to check/test the fuse:
https://www.2carpros.com/articles/how-to-check-a-car-fuse
If that fuse is good and has power to and from it, the next thing to check is if the pump is getting power or not. I attached a schematic below that shows the relevant wiring. Note that the gray wire goes from the relay to the pump. That is the wire we need to check.
Let me know if you are comfortable performing these things. Also, if you plan to test for power at the pump, you will need a helper. With a test light probing the gray wire, a helper will need to turn the key because the power supply with the engine off is only to prime the system and lasts a second or two.
Let me know.
Joe
See pics below.
Images (Click to make bigger)
Tuesday, March 26th, 2024 AT 7:14 PM