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The fuel pump relay is powered by the main relay check for power to the fuel pump relay while cranking if no power check fuses and power to and from main relay.
Locate the fuel pump relay test terminal in the engine compartment diagnoses box, it should be labeled FP. Ground the FP terminal with the key on and see if the fuel pump runs,. The FP terminal is tapped in to the ground control circuit of the fuel pump relay and when grounded the fuel pump relay should click. If the fuel pump relay is not clicking when the test terminal is grounded, remove the relay and check that there is two terminals that have power when the key is on. If there is no power check for a blown fuse or broken wiring. If the fuel pump relay is operating properly test for power to the fuel pump
Make sure you are getting the ground path to the relay when cranking the engine . this signal comes from the ECM (terminal 1U) if not check the wire between the ECM and the fuel pump relay if wire is good suspect ECM.
2003 Jetta left rear window blue plastic part of the