my Toyota Corolla E170 (2013-2019) engine cranks but won’t start what should I do

Toyota Corolla E170 (2013-2019)

Error Codes

2-4 hours

Time

medium

Difficulty

high

Severity

4 min read

631 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 engine cranking issues in Toyota Corolla E170 (2013-2019). Step-by-step guide with diagnostic procedures and repair instructions.

Affected Component

Engine

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 it to avoid burns.

Symptoms

•Engine cranks without starting
•No fuel pump sound when the ignition is turned on
•Check engine light illuminated
•Unusual fuel smell near the engine
•Battery appears charged and in good condition
•Engine does not show signs of sputtering or attempting to start

Diagnostic Steps

1
Scan for error codes using an OBD-II scanner to identify any stored trouble codes.
2
Check the fuel pump relay and fuse to ensure they are functioning properly.
3
Inspect the fuel lines for any signs of leaks or blockages.
4
Test the fuel pressure at the fuel rail using a fuel pressure gauge.
5
Verify if there is spark at the ignition coils by using a spark tester.
6
Check the integrity of the crankshaft position sensor and camshaft position sensor.

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
•Spark tester
•Jack and jack stands

Parts Required

•Fuel pump (if found faulty)
•Fuel filter (if applicable)
•Ignition coil or spark plugs (if found faulty)

Related Faults

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Diagnostic Steps

1
Scan for error codes using an OBD-II scanner to identify any stored trouble codes.
2
Check the fuel pump relay and fuse to ensure they are functioning properly.
3
Inspect the fuel lines for any signs of leaks or blockages.
4
Test the fuel pressure at the fuel rail using a fuel pressure gauge.
5
Verify if there is spark at the ignition coils by using a spark tester.
6
Check the integrity of the crankshaft position sensor and camshaft position sensor.

Solution

1. Preparation

Gather necessary tools and parts.
Ensure the vehicle is parked on a level surface and the ignition is off.
Disconnect the negative battery terminal for safety.

2. Fuel System Inspection

Check Fuel Pump Relay and Fuse:
- Locate the fuse box under the dashboard or engine compartment.
- Remove the fuel pump relay and inspect for damage; replace if faulty.
- Test the fuse for continuity using a multimeter; replace if blown.
Test Fuel Pressure:
- Connect a fuel pressure gauge to the fuel rail service port.
- Turn the ignition to the "ON" position (do not start) and observe the pressure reading.
- Compare the reading to the manufacturer's specifications (typically around 40-50 psi for most models). If pressure is low, the fuel pump may be faulty.

3. Ignition System Inspection

Check for Spark:
- Remove one of the spark plug wires and connect a spark tester.
- Crank the engine and observe for spark. If no spark is present, further diagnostics on the ignition system are needed.
Inspect Crankshaft and Camshaft Position Sensors:
- Locate the sensors and inspect wiring for damage or corrosion.
- Use a multimeter to check the resistance of the sensors and compare to specifications.
- Replace any faulty sensors.

4. Fuel Delivery Repair (if needed)

Replace Fuel Pump:
- If the fuel pump is determined to be faulty, relieve fuel system pressure by removing the fuel pump fuse and starting the engine until it stalls.
- Disconnect the negative battery terminal again.
- Raise the vehicle using a jack and secure it with jack stands.
- Remove the fuel tank according to the service manual, disconnecting any associated lines and electrical connectors.
- Replace the old fuel pump with a new one, ensuring to reconnect all lines and connectors securely.