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 to each ignition coil, and connect the ignition coil connectors.
4. Disconnect the 6 injector connectors.
5. Ground the spark plugs.
6. Check if sparks occur at each spark plug while the engine is being cranked.

NOTE:
- Be sure to ground the spark plug when checking.
- Replace the ignition coil if it receives an 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 connector.




2. Perform spark test on each ignition coil with igniter.
1. Replace ignition coil with igniter with a normal one.
2. Perform spark test again.




3. Check power supply to ignition coil.
1. Turn ignition switch ON.
2. Check that there is battery positive (+) voltage at ignition coil positive (+) terminal.







4. Check resistance in VVT sensor out put voltage (see step 2).
1. Check that the wiring between VVT sensor and ECM.







5. Check resistance in crankshaft position sensor.




6. Check IGT signal from ECM.

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