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In a 2004 Toyota Tacoma, you can find the fuel pump relay in the main fuse box located on the far right side of the engine compartment on the driver's side of the vehicle. Look for it near the side panel by the battery terminals, positioned between the air filter assembly and the battery. The relay will be in the first position at the lower section of the fuse panel. You'll need a fuse removal tool or a flat head screwdriver to take it out. If replacing the fuel pump relay doesn't solve the issue, consider checking the MFI relay, which might be the reason for the lack of power to the fuel pump. The price for a fuel pump relay can range from $5 to $20 depending on the brand and quality.
The fuel pump relay in a 2004 Toyota Tacoma can be found in the primary fuse box under the hood on the driver's side, situated behind the battery.
The fuel pump relay in a 2004 Tacoma 2.4L is actually labeled as the EFI relay, unlike other first-generation Tacomas, making it unique in this regard.