Ignition Coil: Testing and Inspection
INSPECT IGNITION COIL ASSEMBLYa. Check for DTCs.
NOTE: If any DTC is present, perform troubleshooting in accordance with the procedures for that DTC.
b. Check that sparks occur.
1. Remove the V-bank cover.
2. Remove the intake air surge tank.
3. Remove the No. 1 surge tank stay.
4. Disconnect the 6 ignition coil connectors and remove the 6 bolts and 6 ignition coils.
5. Using a 16 mm (0.63 in.) plug wrench, remove the spark plugs.
6. Disconnect the 6 fuel injector connectors.
7. Install the spark plugs to each ignition coil, and connect the ignition coil connectors.
8. Ground the spark plugs.
9. Check if a spark occurs at each spark plug while the engine is being cranked.
NOTE:
- Be sure to ground the spark plugs when checking.
- Replace the ignition coil if it receives an impact.
- Do not crank the engine for more than 2 seconds.
c. Perform the spark test according to the flowchart.
1. Check that the wire harness side connector of the ignition coil with igniter is securely connected.
2. Perform a speak test on each ignition coil.
1. Replace the ignition coil with a normal one.
2. Perform the spark test again.
3. Check the power supply to the ignition coil.
1. Turn the ignition switch to the ON position.
2. Check that there is battery voltage at the ignition coil positive (+) terminal.
4. Check the VVT sensor output voltage.
5. Measure the resistance of the crankshaft position sensor.
6. Check the IGT signal from the ECM.
d. Using a 16 mm (0.63 in.) plug wrench, install the spark plugs.
Torque: 18 N.m (184 kgf.cm, 13 ft.lbf)
e. Install the 6 ignition coils with the 6 bolts and connect the 6 ignition coil connectors.
Torque: 10 N.m (102 kgf.cm, 7 ft.lbf)
f. Connect the 6 fuel injector connectors.
g. Install the No. 1 surge tank stay .
h. Install the intake air surge tank .
i. Install the V-bank cover.