Ignition Coil: Testing and Inspection

ON-VEHICLE INSPECTION

HINT: In this section, the terms Cold and Hot refer to the temperature of the coils. Cold means approximately -10 to 50 °C (14 to 122°F). Hot means approximately 50 to 100 °C (122 to 212 °F).

1. INSPECT IGNITION COIL AND SPARK TEST

a. Check for DTCs.

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

b. Check whether sparks occur.

1. Remove cylinder head cover No. 2.
2. Remove the 4 ignition coils.
3. Using a 16 mm (0.63 in) plug wrench, remove the 4 spark plugs.
4. Install the spark plug onto each ignition coil and connect the ignition coil connectors.
5. Disconnect the 4 injector connectors.
6. Ground the spark plugs.
7. Check that sparks occur while the engine is being cranked.

NOTE:
- Ground the spark plug when checking it.
- 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 procedure.

c. Perform the spark test in accordance with the following procedure.




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

2. Perform a 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 with igniter.

1. Turn the engine switch ON.




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







4. Check the resistance of the camshaft position sensor.







5. Check the resistance of the crankshaft position sensor.




6. Check the IGT from the ECM

d. Connect the 4 injector connectors.
e. Using a 16 mm (0.63 in) plug wrench, install the 4 spark plugs.

Torque: 18 Nm (184 kgf.cm, 13 ft. lbs.)

f. Install the 4 ignition coils
g. Install cylinder head cover No. 2.