PROCEDURE
PERFORM SPARK TEST
CAUTION:
To prevent injury due to contact with an operating V-ribbed belt or cooling fan, keep your hands and clothing away from the V-ribbed belt and cooling fans when working in the engine compartment with the engine running or the engine switch on (IG).
Check for DTCs.
Note
If any DTCs are present, perform troubleshooting in accordance with the procedure for each DTC.
Remove the 4 ignition coil assemblies and 4 spark plugs.
Note
If an ignition coil assembly or spark plug has been struck or dropped, replace it.
Tech Tips
Arrange the removed parts in the correct order.
Disconnect the 4 fuel injector assembly connectors.
Install the spark plug to the ignition coil assembly, and then connect the ignition coil assembly connector.
Ground the spark plug.
Check that spark occurs at each spark plug while the engine is being cranked.
Note
Be sure to ground the spark plugs when checking them.
Do not crank the engine for more than 2 seconds.
If an ignition coil assembly or spark plug has been struck or dropped, replace it.
Tech Tips
If spark does not occur, perform the following procedure.
Connect the 4 fuel injector assembly connectors.
Install the 4 spark plugs and 4 ignition coil assemblies.
Note
If an ignition coil assembly or spark plug has been struck or dropped, replace it.
Tech Tips
Install the same parts to their original positions.
Check for DTCs.
Clear the DTCs.
INSPECT IGNITION COIL ASSEMBLY AND SPARK TEST
Tech Tips
Perform "Inspection After Repair" after replacing a spark plug or ignition coil assembly.
Check that the ignition coil assembly connector is securely connected.
Result | ||||||
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Perform a spark test on each ignition coil assembly.
Replace the ignition coil assembly with a known good one.
Perform the spark test again.
Result | ||||||
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Perform a spark test on each spark plug.
Replace the spark plug with a known good one.
Perform the spark test again.
Result | ||||||
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Note
If an ignition coil assembly or spark plug has been struck or dropped, replace it.
Connect the 4 fuel injector assembly connectors.
Install the 4 spark plugs and 4 ignition coil assemblies.
Note
If an ignition coil assembly or spark plug has been struck or dropped, replace it.
Tech Tips
Install the same parts to their original positions.
Check for DTCs.
Clear the DTCs.
INSPECT SPARK PLUG
Note
Do not use a wire brush for cleaning.
Never attempt to adjust the electrode gap of a used spark plug.
*a | Body Ground |
Check the electrode.
Using a megohmmeter, measure the insulation resistance.
Standard Insulation Resistance | ||||||
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Tech Tips
If the result is not as specified, clean the spark plug with a spark plug cleaner and measure the resistance again.
If a megohmmeter is not available, perform the following simple inspection instead.
Alternative inspection method.
Start the engine.
Note
Do not perform this step when any of the following DTCs are output: P0300, P0301, P0302, P0303, P0304 (Cylinder Misfire Detected).
Quickly accelerate the engine to 4000 rpm 5 times.
Note
Do not perform this step when any of the following DTCs are output: P0300, P0301, P0302, P0303, P0304 (Cylinder Misfire Detected).
Remove the spark plug.
Visually check the spark plug.
Tech Tips
If the electrode is dry, the spark plug is functioning properly. If the electrode is damp, proceed to the next step.
Check the spark plug for any damage to its threads and insulator.
If there is any damage, replace the spark plug.
Recommended Spark Plug | ||||
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*a | Spark Plug Electrode Gap |
Check the spark plug electrode gap.
Maximum Electrode Gap for Used Spark Plug |
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1.3 mm (0.0512 in.) |
Note
Never attempt to adjust the electrode gap of a used spark plug.
If the spark plug electrode gap is more than the maximum, replace the spark plug.
Standard Electrode Gap for New Spark Plug |
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1.0 to 1.1 mm (0.0394 to 0.0433 in.) |
Clean the spark plug.
If the electrode has traces of wet carbon, clean the electrode with a spark plug cleaner and then dry it.
Standard Air Pressure |
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588 kPa (6.0 kgf/cm2, 85 psi) |
Standard Duration |
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20 seconds or less |
Tech Tips
Only use a spark plug cleaner when the electrode is free of oil. If the electrode has traces of oil, use gasoline to clean off the oil before using the spark plug cleaner.
Install the spark plug.
PERFORM INITIALIZATION
Perform "Inspection After Repair" after replacing a spark plug or ignition coil assembly.