Ignition System: Testing and Inspection
ON-VEHICLE INSPECTIONNOTE: "Cold" and "Hot" in these sentences express the temperature of the coils themselves. "Cold" is from -10 °C (14 °F) to 50 °C (122 °F) and "Hot" is from 50 °C (122°F) to 100 °C (212 °F).
1. INSPECT IGNITION COIL (WITH IGNITER) AND SPARK TEST
Check that the spark occurs.
1. Remove the ignition coils (with igniter).
2. Remove the spark plugs.
3. Install the spark plugs to each ignition coil (with igniter), and connect the ignition coil (with igniter) connector.
4. Disconnect the 8 injector connectors.
5. Ground the spark plug.
6. Check that spark occurs while engine is being cranked.
NOTE: To prevent gasoline from being injected out of injectors during this test, crank the engine for no more than 5 - 10 seconds at a time.
If the spark does not occur, do the test as shown:
7. Using a 16 mm plug wrench, install the spark plugs.
Torque: 17.5 N.m (180 kg.cm, 13 ft.lb)
8. Reinstall the ignition coils (with igniter).
2. INSPECT SPARK PLUGS
a. Remove the ignition coils (with igniter).
b. Using a 16 mm plug wrench, remove the spark plugs.
c. Clean the spark plugs.
If the electrode has traces of wet carbon, allow it to dry and then clean with a spark plug cleaner.
Air pressure: Below 588 kPa (6 kg/Sq. cm, 85 psi)
Duration: 20 seconds or less
HINT: If there are traces of oil, remove it with gasoline before using the spark plug cleaner.
d. Check the spark plug for thread damage and insulator damage.
If abnormal, replace the spark plug.
e. Adjust the spark plug electrode gap.
Electrode gap: 0.8 mm (0.031 in.)
f. Using a 1 6 mm plug wrench, install the spark plugs.
Torque: 17.5 N.m (180 kg.cm, 13 ft.lb)
g. Reinstall the ignition coils (with igniter).
3. INSPECT CAMSHAFT POSITION SENSOR
a. Disconnect the camshaft position sensor connector.
b. Using an ohmmeter, measure the resistance between terminals.
If the resistance is not as specified, replace the camshaft position sensor.
c. Reconnect the camshaft position sensor connector.