Component Tests and General Diagnostics

On-vehicle Inspection

Spark test
1. Disconnect the ignition coil connectors (A).








2. Remove the ignition coils (A).

Tightening torque :
9.8 - 11.8N.m (1.0 - 1.2kgf.m, 7.2 - 8.7lb-ft)








3. Using a spark plug socket, remove the spark plug.
4. Install the spark plug to the ignition coil.
5. Ground the spark plug to the engine.





NOTE:
Crank the engine for no more than 5 - 10 seconds.
To prevent fuel being injected from injectors while the engine is being cranked, disconnect the injector connector.

6. Inspect all the spark plugs.
7. Using a spark plug socket, install the spark plug.

Tightening torque :
24.5 - 29.4N.m (2.5 - 3.0kgf.m, 18.1 - 21.7lb-ft)

8. Install the ignition coil.
9. Reconnect the ignition coil connector.





Inspect Spark Plug
1. Using a spark plug socket, remove the spark plug.

CAUTION:
Be careful that no contaminants enter through the spark plug holes.

2. Inspect the electrodes (A) and ceramic insulator (B).




Inspection Of Electrodes





3. Check the electrode gap (A).

Standard :
1.0 - 1.1 mm (0.0394 - 0.0433 in.)





Inspect Ignition Coil
1. Measure the primary coil resistance between terminals (+) and (-).





Standard value:0.62Ohms ± 10%

Removal

Ignition coil
1. Disconnect the ignition coil connectors (A).









NOTE:
When disconnecting the ignition coil connector, pull out the locking pin (A) and then pull out the connector while pressing the clip (B).




2. Remove the ignition coils (A).

Tightening torque :
9.8 - 11.8N.m (1.0 - 1.2kgf.m, 7.2 - 8.7lb-ft)








3. Installation is reverse order of removal.