2NZ-FE ENGINE CONTROL  IGNITION SYSTEM  ON-VEHICLE INSPECTION  


PROCEDURE

Hide 1.PERFORM SPARK TEST

a.

Check for DTCs.

Click hereEngine / Hybrid System>2NZ-FE ENGINE CONTROL>SFI SYSTEM>DTC CHECK / CLEAR

NOTICE:

If any DTCs are present, perform troubleshooting in accordance with the procedure for each DTC.



b.

Remove the 4 No. 1 ignition coils and 4 spark plugs.

Click hereEngine / Hybrid System>2NZ-FE ENGINE CONTROL>IGNITION COIL AND SPARK PLUG>REMOVAL

NOTICE:
·

If a No. 1 ignition coil has been struck or dropped, replace it.

·

If a spark plug has been struck or dropped, replace it.



HINT:

Arrange the removed parts in the correct order.



c.
A156076

Disconnect the 4 fuel injector assembly connectors.


d.
A156093

Install the spark plug to the No. 1 ignition coil, and then connect the No. 1 ignition coil connector.


e.

Ground the spark plug.


f.

Check that spark occurs at each spark plug while the engine is being cranked.

NOTICE:
·

Be sure to ground the spark plugs when checking them.

·

Do not crank the engine for more than 2 seconds.

·

If a spark plug has been struck or dropped, replace it.

·

If a No. 1 ignition coil has been struck or dropped, replace it.



HINT:

If spark does not occur, perform the following procedure.



g.

Connect the 4 fuel injector assembly connectors.


h.

Install the 4 spark plugs and 4 No. 1 ignition coils.

Click hereEngine / Hybrid System>2NZ-FE ENGINE CONTROL>IGNITION COIL AND SPARK PLUG>INSTALLATION

NOTICE:
·

If a spark plug has been struck or dropped, replace it.

·

If a No. 1 ignition coil has been struck or dropped, replace it.



HINT:

Install the same parts to their original positions.



i.

Check for DTCs.

Click hereEngine / Hybrid System>2NZ-FE ENGINE CONTROL>SFI SYSTEM>DTC CHECK / CLEAR


j.

Clear the DTCs.

Click hereEngine / Hybrid System>2NZ-FE ENGINE CONTROL>SFI SYSTEM>DTC CHECK / CLEAR


Hide 2.INSPECT NO. 1 IGNITION COIL AND SPARK TEST

a.

Check that the No. 1 ignition coil connector is securely connected.

Result:
Result Action
NG Connect securely
OK Go to next step



b.

Perform a spark test on each No. 1 ignition coil.

i.

Replace the No. 1 ignition coil with a known good one.


ii.

Perform the spark test again.

Result:
Result Action
NG Go to next step
OK Replace No. 1 ignition coil




c.

Perform a spark test on each spark plug.

i.

Replace the spark plug with a known good one.


ii.

Perform the spark test again.

Result:
Result Action
NG Inspect ignition system
Click here(Click here)
OK Replace spark plug


NOTICE:
·

If a No. 1 ignition coil has been struck or dropped, replace it.

·

If a spark plug has been struck or dropped, replace it.





d.

Connect the 4 fuel injector assembly connectors.


e.

Install the 4 spark plugs and 4 No. 1 ignition coils.

Click hereEngine / Hybrid System>2NZ-FE ENGINE CONTROL>IGNITION COIL AND SPARK PLUG>INSTALLATION

NOTICE:
·

If a No. 1 ignition coil has been struck or dropped, replace it.

·

If a spark plug has been struck or dropped, replace it.



HINT:

Install the same parts to their original positions.



f.

Check for DTCs.

Click hereEngine / Hybrid System>2NZ-FE ENGINE CONTROL>SFI SYSTEM>DTC CHECK / CLEAR


g.

Clear the DTCs.

Click hereEngine / Hybrid System>2NZ-FE ENGINE CONTROL>SFI SYSTEM>DTC CHECK / CLEAR


Hide 19100P 3.INSPECT SPARK PLUG

NOTICE:
·

Do not use a wire brush for cleaning.

·

Never attempt to adjust the electrode gap of a used or new spark plug.



a.
I039522C06
0.708,1.969 1.094,1.917 false 0.563,1.875 0.74,2.042 0.177,0.167 10 *a
*a Body Ground


Check the electrode.

i.

Using a megohmmeter, measure the insulation resistance.

Standard Insulation Resistance:
Tester Connection Condition Specified Condition
Spark plug (terminal part) - Body ground Always 10 MΩ or higher


HINT:
·

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.





b.

Alternative inspection method.

i.

Start the engine.


ii.

Quickly accelerate the engine to 4000 rpm 5 times.


iii.

Remove the spark plug.

Click hereEngine / Hybrid System>2NZ-FE ENGINE CONTROL>IGNITION COIL AND SPARK PLUG>REMOVAL


iv.

Visually check the spark plug.

HINT:

If the electrode is dry, the spark plug is functioning properly. If the electrode is damp, proceed to the next step.




c.

Check the spark plug for any damage to its threads and insulator.

If there is any damage, replace the spark plug.

Recommended Spark Plug:
Manufacturer Spark Plug Type
DENSO K16R-U11
NGK BKR5EYA-11



d.
A122451
2.917,1.417 3.229,1.573 0.313,0.156 10 false *a
*a Spark Plug Electrode Gap


Check the spark plug electrode gap.

Maximum Electrode Gap for Used Spark Plug:

1.3 mm (0.0512 in.)


NOTICE:

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:

1.0 to 1.1 mm (0.0394 to 0.0433 in.)


NOTICE:

Never attempt to adjust the electrode gap of a new spark plug.



e.
A296690

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:

588 kPa (6.0 kgf/cm2, 85 psi)


Standard Duration:

20 seconds or less


HINT:

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.



f.

Install the spark plug.

Click hereEngine / Hybrid System>2NZ-FE ENGINE CONTROL>IGNITION COIL AND SPARK PLUG>INSTALLATION