Ignition Coil: Testing and Inspection

ON-VEHICLE INSPECTION

CHECK IGNITION COIL ASSEMBLY AND PERFORM SPARK TEST

a. Check for DTCs.

NOTE: If any DTC is present, perform troubleshooting in accordance with a procedure for that DTC.

b. Check that sparks occur.
1. Remove the ignition coils.
2. Using a 16 mm plug wrench, remove the spark plugs.
3. Install the spark plugs onto the ignition coils, and connect the ignition coil connectors.
4. Disconnect the 6 injector connectors.
5. Ground the spark plugs.
6. Check that sparks occur at each spark plug while the engine is being cranked.

NOTE:
- Be sure to ground the spark plugs when checking.
- Replace any ignition coils that have been subjected to any physical impact.
- Do not crank the engine for more than 2 seconds.

If sparks do not occur, perform the following test:

c. Spark test flow chart.




1. Check that the wire harness side connector of ignition coil with igniter is securely connected.

2. Perform the spark test on each ignition coil with igniter.
1. Replace the ignition coil with igniter with a functioning one.




2. Perform the spark test again.

3. Check that the power is supplied to the ignition coil.
1. Turn the ignition switch ON.




2. Check that the positive (+) battery voltage is applied to the positive (+) terminal of the ignition coil.

4. Measure the output voltage of the VVT sensor.




1. Inspect the VVT sensor in accordance with the procedure.







5. Check the resistance in crankshaft position sensor.




6. Check the IGT signal from the ECM.

d. Using a 16 mm plug wrench, install the spark plugs.
e. Install the ignition coils.