why is my Toyota RAV4's engine light flashing?

Solution

1. Preparation

• Gather tools and parts needed for the repair.
• Ensure the vehicle is parked on a flat surface and the engine is cool.
• Disconnect the battery to prevent electrical shorts.

2. Scan and Analyze

• Connect the OBD-II scanner to the vehicle's diagnostic port.
• Retrieve and note the trouble codes.
• Research the codes to understand potential issues.

3. Inspect Ignition Components

• Remove the engine cover if applicable.
• Inspect spark plugs for wear or damage; replace if necessary.
• Test ignition coils using a multimeter for proper resistance values; replace faulty coils.

4. Check Fuel System

• Inspect fuel lines for leaks or damage.
• Use a fuel pressure gauge to verify proper fuel pressure; replace the fuel pump if pressure is low.
• Clean or replace clogged fuel injectors.

5. Inspect for Vacuum Leaks

• Visually inspect hoses connected to the intake manifold for cracks or disconnections.
• Use a smoke machine or carburetor cleaner to identify leaks.
• Replace any damaged hoses.

6. Clear Codes and Test

• After repairs, clear the trouble codes using the OBD-II scanner.
• Reconnect the battery and start the engine.
• Observe the engine light behavior and listen for any unusual sounds.