Next, the lower dashboard trim needs to be pulled loose.Disconnect the three wiring connections from the back of the housing.Remove the five phillips head screws securing the glove box housing to the dashboard.The first step is to detach the door from the side catches by removing the two plastic pins (rivets) with a flat blade screwdriver. In order to access the fuel pump relay, you will need to remove the passenger side glove box.In order to access it so it can be properly tested, the glove box will need to be removed. The fuel pump relay is located behind the glove box in the control module rack. Section 3 - Testing the Fuel Pump Relay If neither of the fuel pump fuses are blown, or if you still do not have power at the fuel pump after replacing a blown fuse, then most likely the power issue is due to a faulty relay. If it still does not have power at the blue/white terminal, then proceed to section 2 to test the relay. If you had to replace either of the fuses because they were blown, retest the fuel pump to see if it has power.Pull the fuse and inspect it to see if it's blown. The fuel pump 15 amp fuse is #54, approximately in the center of the fuse block.Turn the two thumb releases on its cover to access the fuses. The vehicle's main fuse block is located in the top of the glove box. The 20 amp fuse in the third position is connected to the fuel pump relay.Slide the cover back so the fuses can be accessed. Use a metal pick to pry the cover open on the fuse holder. Open the hood and use a T30 torx bit to remove the cover off of the E-box.But since it only takes a few minutes to check it, we include it in our BMW E46 fuel pump test. Unless you are experiencing a host of other issues with your vehicle (like the car going into "limp mode"), it is doubtful the 20 amp E-box fuse is blown. Section 2 - Checking the Fuel Pump Fuses There are two fuses feeding the fuel pump relay with power a 15 amp fuse located in the glove box fuse block, and a 20 amp fuse located in the engine compartment E-box. If the test light shows there isn’t power at the pump, the next step is to check the fuses and the relay. If the test light confirms there is power at the pump, proceed to section 4 to check the fuel line pressure.The test light should light up for approximately one second. Insert the test light into the 12v power terminal fed by the blue/white wire. Connect the test light to a suitable ground - we use the door catch as shown below.If you are working by yourself, we suggest using a test is much easier to use than a multimeter if you don’t have a helper. You can use either a multimeter or 12V test light when performing a BMW E46 fuel pump test.This is where you will check with a multimeter or test light to verify the pump is being supplied with power. Follow the wire into the plug and identify the terminal it is connected to.This is the 12V power supply to the pump. Flip the plug over and identify the blue/white wire.Grasp the fuel pump electrical connection and slide its locking mechanism out to release it.Remove the fuel pump cover and lay to the side out of the work area. Use a 10mm socket wrench to remove the four nuts securing the fuel pump cover.Lift the sound insulation off of the top of the fuel pump and fold it backwards.Use a bungee cord if necessary to safely stow it out of the work area. To access it, g rasp the bottom of the rear seat and pull out and up to release it from the body of the car. The BMW E46 fuel pump is located under the rear seat of the vehicle.First is making sure the pump is powering up and running and if it is, verifying it is producing the correct fuel pressure in the engine. Section 1 - Testing the Fuel Pump As discussed above, testing the fuel pump is actually a two step process.