why does my Toyota RAV4 XA50 (2019-2024) have a check engine light and no power

Solution

1. Preparation

• Gather necessary tools and parts.
• Ensure the vehicle is parked on a level surface and the engine is off.
• Disconnect the negative battery terminal to prevent electrical shorts.

2. Addressing Error Codes

• Sub-step 1: Use the OBD-II scanner to read and document the error codes.
• Sub-step 2: Clear the error codes and take the vehicle for a test drive to see if they return, confirming the issue.

3. Inspecting the Air Intake System

• Sub-step 1: Remove the air intake duct and inspect the air filter for dirt or blockages.
• Sub-step 2: Check for any leaks or cracks in the intake manifold.
• Sub-step 3: Replace the air filter if necessary and reassemble the intake system.

4. Fuel System Inspection

• Sub-step 1: Connect a fuel pressure gauge to the fuel rail to check fuel pressure against manufacturer specifications.
• Sub-step 2: Inspect fuel lines for leaks or damage.
• Sub-step 3: Replace the fuel filter if it appears clogged and check the fuel pump operation.

5. Ignition System Check

• Sub-step 1: Remove spark plugs and inspect for wear or carbon build-up; replace if necessary.
• Sub-step 2: Test ignition coils using a multimeter to ensure they are within specifications; replace faulty coils.

6. Battery and Charging System

• Sub-step 1: Use a multimeter to check battery voltage; it should be around 12.6V when fully charged.
• Sub-step 2: Inspect the alternator output while the engine is running; it should be between 13.7V and 14.7V.
• Sub-step 3: Replace the battery or alternator if they do not meet specifications.