Toyota Corolla E170 (2013-2019) fuel pump not working how to troubleshoot

Toyota Corolla E170 (2013-2019)

Error Codes

2-4 hours

Time

medium

Difficulty

high

Severity

3 min read

576 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 troubleshoot and fix the fuel pump issue in Toyota Corolla E170 (2013-2019). Step-by-step guide with diagnostic procedures and repair instructions.

Affected Component

Fuel System

Estimated Time

2-4 hours

⚠️ Safety Warnings

Important safety information - read before proceeding

•Disconnect the battery before working on electrical systems.
•Allow the engine to cool before working on the fuel system to avoid burns or fire hazards.

Symptoms

•Engine cranks but does not start
•No fuel pressure at the fuel rail
•Fuel pump relay clicking (or not clicking)
•Check engine light illuminated
•Whining noise from the fuel tank when the ignition is turned on
•Poor fuel delivery diagnosed via performance issues

Diagnostic Steps

1
Scan the vehicle's OBD-II system for any error codes related to the fuel system.
2
Check the fuel pump fuse for continuity and replace if blown.
3
Inspect the fuel pump relay for proper operation; replace if faulty.
4
Test for power at the fuel pump connector with a multimeter during cranking.
5
Check the fuel filter for clogs that might restrict fuel flow.
6
Verify the integrity of the wiring and connectors leading 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

•Socket set
•Multimeter
•Fuel pressure gauge
•Torque wrench
•Screwdrivers
•Pliers

Parts Required

•Replacement fuel pump (specific to Toyota Corolla E170)
•Fuel filter (if applicable)

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Diagnostic Steps

1
Scan the vehicle's OBD-II system for any error codes related to the fuel system.
2
Check the fuel pump fuse for continuity and replace if blown.
3
Inspect the fuel pump relay for proper operation; replace if faulty.
4
Test for power at the fuel pump connector with a multimeter during cranking.
5
Check the fuel filter for clogs that might restrict fuel flow.
6
Verify the integrity of the wiring and connectors leading to the fuel pump.

Solution

1. Preparation

Gather tools and parts required for the repair.
Ensure the vehicle is parked on a level surface and the ignition is off.
Disconnect the battery to prevent electrical shorts.

Tools Required:

Socket set
Multimeter
Fuel pressure gauge
Torque wrench
Screwdrivers
Pliers

2. Access Fuel Pump

Remove the rear seat cushion or access panel (if applicable) to reach the fuel pump access cover.
Unscrew the access cover using a socket set and remove it carefully.

3. Inspect and Test Fuel Pump

Disconnect the fuel pump electrical connector.
Use a multimeter to check for voltage at the connector while cranking the engine; you should see battery voltage (approximately 12V).
If no voltage is present, trace the wiring back to the relay and check continuity.

4. Replace Fuel Pump (if necessary)

If the fuel pump is determined to be faulty, remove the retaining ring using a suitable tool.
Carefully lift out the fuel pump assembly from the tank.
Replace the old fuel pump with the new one, ensuring the new unit is compatible.
Reinstall the fuel pump assembly into the tank and secure it with the retaining ring.

5. Reassemble and Test

Reconnect the fuel pump electrical connector.
Replace the access cover and secure it.
Reconnect the battery and turn the ignition to the "ON" position (without starting) to prime the fuel system.
Check for fuel pressure using a fuel pressure gauge at the fuel rail.