how to diagnose fuel pump issues in Honda CR-V Fifth Generation (2017-2022)

Solution

1. Preparation

• Gather necessary tools and parts.
• Disconnect the negative battery terminal to ensure safety.

2. Check and Replace Fuel Pump Relay/Fuse

• Locate the fuel pump relay and fuse in the fuse box.
• Use a multimeter to test the relay for continuity.
• If faulty, replace the relay with a new one.
• Check the fuse and replace if blown.

3. Test Fuel Pressure

• Connect a fuel pressure gauge to the Schrader valve on the fuel rail.
• Turn the ignition key to the "ON" position (do not start the engine) and read the pressure.
• Compare the reading to the manufacturer specifications (usually around 40-50 psi).
• If the pressure is low, proceed to replace the fuel pump.

4. Replace Fuel Pump

• Relieve fuel system pressure by removing the fuel pump relay and starting the engine until it stalls.
• Disconnect the negative battery terminal.
• Remove the rear seats to access the fuel pump access panel.
• Disconnect the fuel lines and electrical connectors from the fuel pump.
• Remove the retaining ring and take out the fuel pump assembly.
• Install the new fuel pump in the reverse order of removal, ensuring to replace any seals.
• Reconnect the electrical connectors and fuel lines.

5. Reassemble and Test

• Reconnect the negative battery terminal.
• Reinstall the access panel and rear seats.
• Start the engine and check for leaks.
• Test drive the vehicle to verify proper operation.