Ignition Coil: Testing and Inspection

ON-VEHICLE INSPECTION

NOTE: "Cold" and "Hot" in these sentences express the temperature of the coils and sensors 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 IGNITER AND SPARK TEST

Check that the spark occurs.
1. Disconnect the 6 injector connectors.
2. Remove the ignition coil.
3. Remove the spark plug.
4. Install the spark plug to the ignition coil, and connect the ignition coil connector.
5. Ground the spark plug.
6. Check if spark occurs while engine is being cranked.

NOTE: To prevent excess fuel being injected from the injectors during this test, do not crank the engine for more 5 - 10 seconds at a time.

Ignition System:

If the spark does not occur, do the test as shown in illustration:

INSPECT IGNITION COILS

a. Remove the ignition coil assembly.




b. Using an ohmmeter, measure the resistance between the positive (+) and negative (-) terminals.




If the resistance is not as specified, replace the ignition coil.




c. Using an ohmmeter, measure the resistance between the positive (+) and high-tension terminal.




If the resistance is not as specified, replace the ignition coil.

d. Reinstall the ignition coil assembly.