how to check fuel pump on my Toyota Corolla E170 (2013-2019)

Toyota Corolla E170 (2013-2019)

Error Codes

2-4 hours

Time

medium

Difficulty

high

Severity

4 min read

682 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 diagnose and fix fuel pump issues in Toyota Corolla E170 (2013-2019). Step-by-step guide with symptoms, diagnostic steps, and repair instructions.

Affected Component

Fuel System

Estimated Time

2-4 hours

⚠️ Safety Warnings

Important safety information - read before proceeding

•Disconnect the negative battery terminal to prevent electrical shorts.
•Be prepared for some fuel spillage when disconnecting fuel lines.

Symptoms

•Engine cranks but does not start
•Intermittent stalling during operation
•Loss of power during acceleration
•Engine misfires or poor performance
•Fuel gauge not reading correctly

Diagnostic Steps

1
Use an OBD-II scanner to check for any diagnostic trouble codes (DTCs) related to the fuel system.
2
Turn the ignition key to the 'ON' position without starting the engine and listen for a humming sound from the fuel tank, indicating the fuel pump is priming.
3
Locate the fuel pump relay in the fuse box and check for proper operation by swapping it with another relay of the same type.
4
Use a fuel pressure gauge to measure the fuel pressure at the fuel rail to ensure it meets the manufacturer's specifications (usually around 43-50 psi).
5
Inspect the wiring harness and connectors leading to the fuel pump for any signs of damage or corrosion.
6
With a multimeter, check for continuity in the fuel pump circuit from the relay to the fuel pump.

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
•Fuel pressure gauge
•Multimeter
•Socket set
•Safety gloves
•Fuel line disconnect tool

Parts Required

•Fuel pump (if replacement is necessary)
•Fuel filter (if needed)

Related Faults

Share this solution

Comments

No comments yet

Be the first to share your thoughts

Back to Generation

Diagnostic Steps

1
Use an OBD-II scanner to check for any diagnostic trouble codes (DTCs) related to the fuel system.
2
Turn the ignition key to the 'ON' position without starting the engine and listen for a humming sound from the fuel tank, indicating the fuel pump is priming.
3
Locate the fuel pump relay in the fuse box and check for proper operation by swapping it with another relay of the same type.
4
Use a fuel pressure gauge to measure the fuel pressure at the fuel rail to ensure it meets the manufacturer's specifications (usually around 43-50 psi).
5
Inspect the wiring harness and connectors leading to the fuel pump for any signs of damage or corrosion.
6
With a multimeter, check for continuity in the fuel pump circuit from the relay to the fuel pump.

Solution

1. Preparation

Gather tools and materials: OBD-II scanner, fuel pressure gauge, multimeter, socket set, and safety gloves.
Disconnect the negative battery terminal to prevent electrical shorts.

2. Access the Fuel Pump

Raise the Vehicle: Use a jack and jack stands to safely lift the rear of the vehicle.
Remove Fuel Tank Shield: If equipped, unbolt and remove the fuel tank shield using a socket set.
Disconnect Fuel Lines: Carefully disconnect the fuel lines from the fuel pump assembly using a line disconnect tool. Be prepared for some fuel spillage.
Unplug Electrical Connector: Disconnect the electrical connector from the fuel pump module.

3. Remove the Fuel Pump

Unbolt Fuel Pump Assembly: Remove the retaining bolts securing the fuel pump assembly to the fuel tank.
Extract Fuel Pump: Carefully lift the fuel pump assembly out of the tank, ensuring that the fuel level sensor is not damaged.

4. Inspect and Test the Fuel Pump

Visual Inspection: Check the fuel pump for any signs of physical damage or wear.
Test Resistance: Use a multimeter to measure the resistance of the fuel pump; it should typically be between 1-5 ohms.
Check Fuel Filter: Inspect and replace the fuel filter if it appears clogged or dirty.

5. Reinstallation

Install New Fuel Pump: If necessary, replace the fuel pump with a new one. Ensure that the O-ring is properly seated.
Reconnect Components: Reattach the electrical connector and fuel lines, ensuring they are secure.
Reinstall Fuel Tank Shield: If applicable, bolt the fuel tank shield back into place.

6. Final Steps

Reconnect Battery: Reattach the negative battery terminal.
Test for Leaks: Turn the ignition to the "ON" position and check for any fuel leaks around the connections.
Start the Engine: Start the engine to ensure the fuel pump is functioning correctly.