my Toyota RAV4 XA40 (2013-2018) has a P0302 code, what should I check?

Solution

1. Preparation

• Gather tools and parts.
• Disconnect the negative battery terminal to ensure safety while working.

Tools Required:

• OBD-II scanner
• Socket set
• Torque wrench
• Compression tester
• Multimeter
• Fuel injector cleaner (if necessary)

2. Replace Spark Plug

• Sub-steps:
  1. Remove the engine cover if applicable.
  2. Disconnect the ignition coil connector for cylinder 2.
  3. Remove the ignition coil by unscrewing it from the cylinder head.
  4. Remove the faulty spark plug using a spark plug socket.
  5. Install a new spark plug, tightening it to the manufacturer’s specified torque (typically 13-16 ft-lbs).
  6. Reinstall the ignition coil and reconnect the connector.

3. Test and Replace Ignition Coil (if necessary)

• Sub-steps:
  1. Use a multimeter to check the resistance of the ignition coil. Compare the readings to specifications.
  2. If out of spec, replace the ignition coil for cylinder 2.
  3. Reinstall the new ignition coil and reconnect any electrical connectors.

4. Check Fuel Injector

• Sub-steps:
  1. Using a fuel injector tester, check the operation of the fuel injector for cylinder 2.
  2. If the injector is faulty, remove it by disconnecting the electrical connector and unscrewing it from the fuel rail.
  3. Clean or replace the injector as necessary, ensuring that all O-rings are replaced and sealed properly.

5. Perform Compression Test

• Sub-steps:
  1. Remove the spark plug from cylinder 2.
  2. Insert the compression tester into the spark plug hole.
  3. Crank the engine and record the compression reading.
  4. Compare the reading to the manufacturer's specifications. If low, further investigation into internal engine problems may be needed.