how to check the fuel pump in my Toyota RAV4 Fifth Generation (2019-present)

Solution

1. Preparation

• Gather tools and materials: OBD-II scanner, multimeter, fuel pressure gauge, socket set, safety glasses, and gloves.
• Ensure the vehicle is parked on a flat surface and the ignition is off. Disconnect the battery negative terminal to prevent any electrical shorts.

2. Check Fuel Pump Functionality

2.1. Listening for the Fuel Pump

• Reconnect the battery and turn the ignition key to the "ON" position without starting the engine.
• Listen for a humming sound from the fuel tank area, indicating the fuel pump is operational.

2.2. Inspect Fuel Pump Fuse

• Locate the fuse box (usually under the dashboard or in the engine compartment).
• Identify the fuel pump fuse using the diagram on the fuse box cover.
• Remove the fuse and inspect for continuity. Replace if blown.

2.3. Test Fuel Pump Relay

• Remove the fuel pump relay from the fuse box.
• Use a multimeter to check for continuity across the relay terminals while activating it.
• Replace the relay if it does not function correctly.

3. Measure Fuel Pressure

• Connect the fuel pressure gauge to the fuel rail's test port while ensuring the ignition is off initially.
• Start the engine and observe the fuel pressure reading on the gauge. Refer to the service manual for the specific pressure range (usually around 50-60 psi for RAV4).
• If the pressure is below specification, further investigation into the fuel pump may be required.

4. Inspect for Fuel Leaks

• Visually inspect the fuel lines and connections for any signs of leakage.
• If leaks are present, replace damaged components and ensure all connections are secure.