my Toyota Highlander Third Generation (2014-2019) has a check engine light and code P0302, what does...

Solution

1. Preparation

• Gather all necessary tools and parts.
• Disconnect the negative battery terminal to prevent electrical shorts.

Tools Required:

• OBD-II scanner
• Socket set
• Torque wrench
• Compression tester
• Noid light or multimeter
• Screwdrivers
• Pliers

2. Inspect and Replace Ignition Components

1. Remove Engine Cover (if applicable):

   • Use the socket set to remove any bolts securing the engine cover.
   • Carefully lift off the cover and set it aside.

2. Inspect Spark Plug and Ignition Coil:

   • Remove the ignition coil from cylinder 2 by unscrewing its mounting bolts.
   • Disconnect the electrical connector from the ignition coil.
   • Remove the spark plug using the spark plug socket and inspect it for signs of wear or damage. Replace if necessary.

3. Replace Ignition Coil (if defective):

   • Install the new ignition coil onto the spark plug and secure it with the mounting bolts.
   • Reconnect the electrical connector.

3. Check and Replace Fuel Injector

1. Remove Fuel Injector:

   • Disconnect the fuel rail by removing the bolts securing it.
   • Carefully pull the fuel rail away from the engine and remove the fuel injector from cylinder 2.

2. Test Fuel Injector:

   • Use a noid light or multimeter to test the fuel injector for proper function.
   • Replace the fuel injector if it is defective.

3. Reinstall Fuel Rail:

   • Ensure all seals are in place and reattach the fuel rail to the engine.
   • Tighten bolts to the manufacturer’s specifications.

4. Perform Compression Test

1. Attach Compression Tester:

   • Remove the spark plug from cylinder 2 and screw in the compression tester.
   • Crank the engine for a few seconds to get a reading.

2. Evaluate Results:

   • Record the compression reading and compare it to specifications; replace engine components if compression is below acceptable levels.

5. Final Steps

• Reconnect the negative battery terminal.
• Clear any error codes using the OBD-II scanner.
• Start the engine and ensure that it runs smoothly.