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Home >> Mitsubishi >> 2004 >> Endeavor XLS, FWD >> Repair and Diagnosis >> Engine Performance >> Ignition System >> On-Vehicle Service >> Secondary Coil Check

Secondary Coil Check

NOTE: It is impossible to check the secondary coil through the continuity check as a diode is integrated in the secondary coil circuit of this ignition coil. Accordingly, check the secondary coil in the following procedure.
  1. Disconnect the ignition coil connector.
  2. Remove the ignition coil and install a new spark plug to the ignition coil.
  3. Connect the ignition coil connector.
  4. Ground the side electrode of the spark plug and crank the engine.
  5. Check that spark is produced between the electrodes of the spark plug.
  6. If no spark plug is produced, replace the ignition coil with a new one and recheck.
  7. If spark is produced with the new ignition coil, replace the old one as it is faulty. If no spark is produced again, the ignition circuit is suspected as faulty. Check the ignition circuit.
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