Removal and installation of ignition coils with ion sensors
1. Disconnect the negative battery terminal.
2. Remove the decorative engine cover.
3. Disconnect the connector, then unscrew the mounting bolt and remove the ignition coil with the ion sensor.
Checking the ignition coil
1. Using a scan tool, check for sparking and identify the failed engine cylinder.
2. Replace the faulty cylinder's ion sensor ignition coil with the normal cylinder's coil and test again.
3. If the lack of spark is related to the ignition coil/ion sensor, replace the ion sensor ignition coil with a new one.