my Toyota Corolla E210 (2019-2024) has no power when turning the key, what should I check?

Solution

1. Preparation

• Gather tools: multimeter, socket set, screwdriver set, and cleaning brush.
• Ensure the vehicle is in a safe location with the transmission in "Park."

2. Battery Inspection

• Step 1: Use a multimeter to check the battery voltage. A healthy battery should read around 12.6 volts.
• Step 2: If the voltage is low, consider jump-starting the vehicle or replacing the battery if it's faulty.

3. Battery Terminal Check

• Step 1: Disconnect the battery terminals using the appropriate socket size.
• Step 2: Inspect for corrosion; clean terminals and cable ends with a wire brush if necessary.
• Step 3: Reconnect the terminals securely, ensuring tight connections.

4. Ignition Switch Testing

• Step 1: Remove the steering column cover using a screwdriver.
• Step 2: Locate the ignition switch connector and disconnect it.
• Step 3: Use a multimeter to check for continuity across the ignition switch terminals when the key is turned to the "Start" position.
• Step 4: Replace the ignition switch if continuity is not present.

5. Fuse and Relay Inspection

• Step 1: Open the fuse box and visually check for any blown fuses related to the starting system.
• Step 2: Replace any blown fuses with the correct amperage rating.
• Step 3: Locate the starter relay, remove it, and test it with the multimeter. Replace if defective.

6. Starter Check

• Step 1: If all previous checks are good, access the starter motor.
• Step 2: Inspect the connections to the starter for tightness and corrosion.
• Step 3: If necessary, test the starter by applying direct battery voltage to its terminal to see if it engages.