Ignition Coil: Testing and Inspection
INSPECT IGNITION COIL ASSEMBLYa. Check for DTCs.
NOTE: If a DTC is present, perform troubleshooting in accordance with the procedure for that DTC.
b. Check that sparks occur.
1. Remove the No. 1 engine cover.
2. Remove the ignition coil.
3. Disconnect the 4 fuel injector connectors.
4. Using a 16 mm plug wrench, remove the 4 spark plugs.
Torque: 18 N.m (184 kgf.cm, 13 ft.lbf)
5. Install each spark plug into an ignition coil, then connect the ignition coil connectors.
6. Ground the spark plugs.
7. Check that a spark occurs at each spark plug while the engine is being cranked.
NOTE:
- Be sure to ground the spark plugs when checking.
- If the ignition coil has been struck or dropped, replace it.
- Do not crank the engine for more than 2 seconds.
If spark do not occur, perform the following procedure.
c. Spark test flow chart.
1. Check that the wire harness side connector of the ignition coil is securely connected.
2. Perform spark test on each ignition coil.
1. Replace ignition coil with a normal one.
2. Perform spark test again.
3. Check power supply to ignition coil.
1. Disconnect the ignition coil connector.
2. Turn the ignition switch to ON.
3. Using a voltmeter, measure the voltage between the terminals.
4. Check resistance of camshaft position sensor.
5. Check resistance of crankshaft position sensor.
6. Check IGT signal from ECM.