Ignition Coil: Testing and Inspection

ON VEHICLE INSPECTION

NOTE: Cold and Hot in these sentences express the temperature of the coils themselves. Cold is from 10 °C (14 °F) to 50 °C (122 °F) and Hot is from 50 °C (122 °F) to 100 °C (212 °F).

INSPECT SPARK TEST

Check that the spark occurs.
1. Remove the ignition coils (with igniters).
2. Remove the spark plugs.
3. Install the spark plug to the ignition coil, and connect the ignition coil connector.
4. Ground the spark plug.
5. See if spark occurs while engine is being cranked.

NOTE: To prevent gasoline from being injected from injectors during this test, crank the engine for no more than 5 - 10 seconds at time.




If the spark does not occur, do the test as given.