how to diagnose why my Toyota Corolla E170 (2013-2019) won't start

Toyota Corolla E170 (2013-2019)

Error Codes

2-4 hours

Time

medium

Difficulty

high

Severity

3 min read

551 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 starting issues in Toyota Corolla E170 (2013-2019). Step-by-step guide with symptoms, diagnostic steps, and repair instructions.

Affected Component

Electrical

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 inspecting any components.

Symptoms

•Engine cranks but does not start
•No cranking noise when turning the key
•Check engine light illuminated
•Battery warning light on the dashboard
•Dim headlights or interior lights
•Clicking noise when trying to start the engine

Diagnostic Steps

1
Check the vehicle's battery voltage with a multimeter; it should read at least 12.4 volts.
2
Inspect battery terminals for corrosion or loose connections.
3
Scan for error codes using an OBD-II scanner to identify any related trouble codes.
4
Check fuses related to the starting system for any blown fuses.
5
Test the starter motor by applying direct battery voltage; listen for any engagement sounds.
6
Inspect the ignition switch operation and wiring for continuity issues.
7
Verify the operation of the fuel pump by listening for it to activate when the ignition is turned on.

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

•Multimeter
•Wire brush
•Jumper cables
•Socket set
•Screwdriver set

Parts Required

•Battery (if needed)
•Starter motor (if faulty)
•Fuel pump (if faulty)

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Diagnostic Steps

1
Check the vehicle's battery voltage with a multimeter; it should read at least 12.4 volts.
2
Inspect battery terminals for corrosion or loose connections.
3
Scan for error codes using an OBD-II scanner to identify any related trouble codes.
4
Check fuses related to the starting system for any blown fuses.
5
Test the starter motor by applying direct battery voltage; listen for any engagement sounds.
6
Inspect the ignition switch operation and wiring for continuity issues.
7
Verify the operation of the fuel pump by listening for it to activate when the ignition is turned on.

Solution

1. Preparation

Gather necessary tools and parts.
Ensure the vehicle is in a safe area, preferably on a level surface.
Disconnect the negative battery terminal to prevent electrical hazards.

2. Battery Inspection

Sub-steps:
1. Clean battery terminals using a wire brush to remove any corrosion.
2. Reconnect the battery terminals firmly.
3. If the battery voltage is low, recharge or replace the battery.
Tools Required: Multimeter, wire brush

3. Starter Motor Testing

Sub-steps:
1. Locate the starter motor under the vehicle.
2. Disconnect the electrical connections from the starter.
3. Use jumper cables to apply direct battery voltage to the starter terminal.
4. Listen for engagement; if it does not engage, replace the starter motor.
Tools Required: Jumper cables, socket set

4. Ignition Switch and Wiring Inspection

Sub-steps:
1. Locate the ignition switch and check for any visible damage.
2. Use a multimeter to test for continuity at the ignition switch.
3. Repair or replace any damaged wiring or connectors.
Tools Required: Multimeter, screwdriver set

5. Fuel Pump Verification

Sub-steps:
1. Turn the ignition to the "ON" position without starting the engine.
2. Listen for the fuel pump priming sound from the fuel tank.
3. If no sound is heard, check the fuel pump fuse and relay.
4. Replace the fuel pump if it is not functioning.
Tools Required: None specific