how to troubleshoot a car that won’t start hot 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

643 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 starting issues when hot in a 2013-2019 Toyota Corolla E170. Step-by-step guide with diagnostic 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 components.
•Allow the engine to cool before performing any inspections or repairs related to the cooling system.

Symptoms

•Engine cranks but does not start
•No sound from the fuel pump when the ignition is turned on
•Check engine light illuminated
•Reduced power or hesitation upon acceleration
•Engine stalling after warming up
•Battery and electrical system functioning normally

Diagnostic Steps

1
Scan for error codes using an OBD-II scanner to identify any stored trouble codes.
2
Check the fuel pressure using a fuel pressure gauge to ensure it meets manufacturer specifications.
3
Inspect the ignition system components, including spark plugs and ignition coils, for wear or damage.
4
Test the crankshaft position sensor and camshaft position sensor for proper function.
5
Verify the operation of the fuel injectors by checking for power and signal while the engine is cranking.
6
Examine the engine coolant temperature sensor for correct readings and functionality.

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
•Socket set
•Multimeter
•Torque wrench

Parts Required

•Crankshaft position sensor
•Camshaft position sensor
•Fuel pump (if found faulty)
•Spark plugs
•Ignition coils (if found faulty)

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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 pressure using a fuel pressure gauge to ensure it meets manufacturer specifications.
3
Inspect the ignition system components, including spark plugs and ignition coils, for wear or damage.
4
Test the crankshaft position sensor and camshaft position sensor for proper function.
5
Verify the operation of the fuel injectors by checking for power and signal while the engine is cranking.
6
Examine the engine coolant temperature sensor for correct readings and functionality.

Solution

1. Preparation

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

2. Inspect and Replace the Crankshaft Position Sensor

Locate the crankshaft position sensor (usually near the bottom of the engine).
Disconnect the electrical connector from the sensor.
Remove the sensor using a socket set (typically 10mm or 12mm bolts).
Install the new crankshaft position sensor and tighten to manufacturer torque specifications (usually around 8-10 lb-ft).
Reconnect the electrical connector.

3. Inspect and Replace the Camshaft Position Sensor

Locate the camshaft position sensor (usually found near the top of the engine).
Disconnect the electrical connector from the sensor.
Remove the sensor using a socket set.
Install the new camshaft position sensor and tighten to manufacturer torque specifications.
Reconnect the electrical connector.

4. Fuel System Check

Ensure the fuel pump is operational by listening for it when the ignition is turned to the "ON" position (not starting the engine).
If no sound is heard, check the fuel pump relay and fuse.
If the fuel pump needs replacement, access it through the fuel tank under the rear seat or trunk (consult the service manual for specifics).
Replace the fuel filter if it is clogged or has not been replaced in the service interval.

5. Ignition System Inspection

Remove the spark plugs using a spark plug socket.
Inspect the spark plugs for wear or fouling and replace if necessary.
Test each ignition coil by removing it from the spark plug and using a multimeter to check for resistance according to specifications.