This procedure covers locating and replacing the fuel pump relay in the engine compartment fuse box, a critical component that controls power delivery to the fuel pump.

Warnings

Tools required

Parts

• Fuel pump relay × 1 — 90987-02028 or equivalent

Preparation

1. Park vehicle on level surface and engage parking brake
2. Turn ignition to OFF position and remove key
3. Allow engine to cool if recently operated (fuse box is near engine)
4. Locate owner's manual or photograph fuse box diagram for relay identification
5. Verify replacement relay matches OEM specifications (relay type and amperage rating)

Procedure

1. 1

   Access engine compartment fuse box
   Open the hood and locate the main engine compartment fuse/relay box on the driver's side of the engine bay, near the strut tower. It is a large black plastic box with a lid that has a fuse diagram printed or embossed on it.
2. 2

   Open fuse box cover
   Release the fuse box cover by pressing the locking tabs on both sides of the lid and lifting upward. Some models have a single front tab that must be lifted first. Set the cover aside in a clean location where the diagram remains visible.
3. 3

   Locate fuel pump relay
   Identify the fuel pump relay using the diagram on the fuse box lid. The relay is typically labeled 'EFI MAIN' or 'FUEL PUMP' and is usually a larger relay (not a mini fuse). On 2018-2024 Camry 2.5L models, it is commonly located in the upper section of the fuse box. The relay is a cube-shaped component approximately 1 inch square with a tab on top.
   ⚠Do not confuse the fuel pump relay with the EFI fuse. The relay is a removable cube-shaped component, while fuses are blade-type. Removing the wrong component can cause other system failures.
4. 4

   Remove old fuel pump relay
   Grasp the relay firmly by the top tab and pull straight upward with steady pressure. If relay is difficult to remove, use a relay puller tool or needle-nose pliers on the tab. Rock the relay gently side-to-side while pulling if necessary, but do not bend the relay socket terminals. Inspect the removed relay for signs of burning, melting, or corrosion on the terminals.
5. 5

   Inspect relay socket
   Examine the relay socket in the fuse box for any signs of burnt contacts, melted plastic, corrosion, or debris. The socket should have clean, spring-loaded metal terminals. If corrosion or debris is present, spray electrical contact cleaner into the socket and allow to dry completely before proceeding. If socket shows heat damage or melting, the fuse box may require professional replacement.
   ⚠Do not insert metal tools or probes into relay socket terminals while inspecting. This can damage the spring contacts and cause poor electrical connection with new relay.
6. 6

   Install new fuel pump relay
   Verify the new relay matches the old relay in size, terminal configuration, and amperage rating (typically 20-30A). Align the relay terminals with the socket, ensuring correct orientation by matching the tab position. Press the relay straight down into the socket firmly until it seats completely flush with surrounding relays. The relay should click into place and should not sit higher than adjacent components.
7. 7

   Close fuse box cover
   Reinstall the fuse box lid by aligning the rear tabs first, then pressing down on the front until all locking tabs engage with audible clicks. Ensure the cover is fully seated to maintain weatherproof seal.

Reassembly

1. No disassembly was required beyond fuse box cover removal
2. Ensure all other relays and fuses remain properly seated if disturbed during access

Verification

• Turn ignition key to ON position (do not start engine). Listen for fuel pump priming sound from rear of vehicle for 2-3 seconds. This confirms relay is functioning and providing power to fuel pump
• Start the engine and verify it starts normally without extended cranking. Engine should fire within 2-3 seconds of cranking
• Allow engine to idle for 1-2 minutes and verify smooth operation with no hesitation or stalling
• Turn engine off, wait 30 seconds, and restart to confirm consistent fuel pump operation
• If available, use a multimeter to verify relay socket shows 12V at power supply terminals when key is in ON position (relay must be removed for this test)
• Check for any dashboard warning lights related to fuel system or engine management
• If original symptom was no-start condition, test drive vehicle to confirm reliable operation before returning to service

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