how to test the fuel pump relay in Ford F-150 13th Generation (2015-2020)

Ford F-150 13th Generation (2015-2020)

Error Codes

1-2 hours

Time

medium

Difficulty

high

Severity

3 min read

499 words

⚠️ Safety Warning

This issue requires immediate attention. If you are not experienced with automotive repairs, consult a professional mechanic. Working on critical systems can be dangerous.

Problem Statement

Learn how to test the fuel pump relay in a Ford F-150 (2015-2020). Step-by-step guide with symptoms, diagnostic steps, and safety tips.

Affected Component

Fuel System

Estimated Time

1-2 hours

⚠️ Safety Warnings

Important safety information - read before proceeding

•Disconnect the battery before working on electrical components
•Ensure the vehicle is in a well-ventilated area to avoid inhaling fuel vapors

Symptoms

•Engine cranks but does not start
•No fuel pressure at the fuel rail
•Intermittent engine stalling
•Fuel pump noise is absent when the ignition is turned on
•Check engine light may be illuminated

Diagnostic Steps

1
Locate the fuel pump relay in the fuse box (refer to the owner's manual for the exact location)
2
Use an OBD-II scanner to check for any related trouble codes
3
With the ignition switch in the 'ON' position, listen for the fuel pump activation sound
4
Use a multimeter to check for voltage at the relay terminals while the ignition is on
5
Swap the fuel pump relay with another relay of the same type in the fuse box to test functionality
6
Inspect the wiring and connectors for any signs of damage or corrosion

Solution

💡 Expert Tip

For complex repairs like this, consider taking photos at each step. This helps if you need to reverse a step or consult with a mechanic. Also, keep all removed parts organized - you may need to reference them during reassembly.

Verification

After completing the repair, verify that the issue has been resolved:

✓Test the affected component to ensure it functions correctly
✓Check for any error codes or warning lights
✓Monitor the vehicle for a few days to ensure the issue does not recur

Prevention Tips

To prevent this issue from occurring again:

•Follow the manufacturer's recommended maintenance schedule
•Address warning signs early before they develop into major issues
•Use quality parts and fluids recommended for your vehicle
•Keep detailed records of all repairs and maintenance

Tools & Equipment Required

•OBD-II scanner
•Multimeter
•Relay removal tool (optional)
•Basic hand tools (screwdriver, pliers)

Parts Required

•Fuel pump relay (if replacement is necessary)

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Diagnostic Steps

1
Locate the fuel pump relay in the fuse box (refer to the owner's manual for the exact location)
2
Use an OBD-II scanner to check for any related trouble codes
3
With the ignition switch in the 'ON' position, listen for the fuel pump activation sound
4
Use a multimeter to check for voltage at the relay terminals while the ignition is on
5
Swap the fuel pump relay with another relay of the same type in the fuse box to test functionality
6
Inspect the wiring and connectors for any signs of damage or corrosion

Solution

1. Preparation

Gather necessary tools and parts.
Disconnect the negative battery terminal to ensure safety.
Wear safety gloves and goggles.

2. Remove the Fuel Pump Relay

Locate the fuel pump relay in the fuse box.
Pull the relay straight out using your fingers or a relay removal tool.
Inspect the relay for any visible signs of damage.

3. Test the Relay

Set the multimeter to the continuity setting.
Test the relay by probing the terminals:
- Connect the multimeter leads to terminals 30 and 87. If the relay is good, the multimeter should indicate continuity (zero ohms) when energized.
- Connect the leads to terminals 85 and 86. This should also indicate continuity when the relay is energized.
If there is no continuity in any of these tests, replace the relay.

4. Reinstallation

If the relay is functional, reinstall it back into the fuse box.
Reconnect the negative battery terminal.

5. Final Check

Turn the ignition to the "ON" position and listen for the fuel pump activation.
Start the engine to confirm proper operation.