What are the symptoms of a failing ignition coil in a Volvo XC60?

Learn about the symptoms of a failing ignition coil in a Volvo XC60 (2008-2017) and the diagnostic steps to identify and replace it.

Tools Required

• OBD-II Scanner
• Multimeter
• Spark Tester
• Ratchet and Socket Set
• Screwdrivers (Flathead and Phillips)
• Torque Wrench
• Safety Gloves and Goggles

Repair Instructions

Step 1: Gather Tools and Safety Gear

• Ensure you have all the necessary tools and safety equipment ready before starting the repair.

Step 2: Disconnect the Battery

• Open the hood and disconnect the negative terminal of the battery to prevent any electrical shorts.

Step 3: Remove the Engine Cover (if applicable)

• If your model has an engine cover, remove it by unscrewing the necessary bolts or clips.

Step 4: Access the Ignition Coils

• Locate the ignition coils which are typically found on top of the engine, attached to the spark plugs.

Step 5: Remove the Ignition Coil

• Disconnect the wiring harness from the ignition coil by pressing the release tab.
• Use a ratchet and socket to remove the bolt securing the ignition coil to the engine.
• Gently pull the ignition coil straight out from the spark plug well.

Step 6: Inspect and Test the Ignition Coil

• Visually inspect the coil for damage. If testing, use a multimeter to check the resistance or a spark tester to check for spark.

Step 7: Install a New Ignition Coil

• If the ignition coil is faulty, install a new one:
  • Insert the new ignition coil into the spark plug well.
  • Secure it with the bolt and reconnect the wiring harness.

Step 8: Repeat for Other Coils (if necessary)

• If multiple coils are suspected to be faulty, repeat the process for each one.

Step 9: Reinstall Engine Cover and Reconnect Battery

• If you removed the engine cover, reinstall it.
• Reconnect the negative terminal of the battery.

Step 10: Clear DTCs and Test Drive

• Use the OBD-II scanner to clear any diagnostic trouble codes.
• Start the engine and perform a test drive to ensure that the symptoms are resolved.

Conclusion

If the ignition coil replacement resolves the symptoms, you have successfully fixed the issue. If problems persist, further diagnostics may be needed to investigate other components of the ignition system or engine management. Always refer to the vehicle’s service manual for specific torque specifications and procedures.