Ignition System: Testing and Inspection

2TR-FE ENGINE CONTROL: IGNITION SYSTEM: ON-VEHICLE INSPECTION

1. PERFORM IGNITION COIL AND SPARK TEST

(a) Check for DTCs DTC Check / Clear.

NOTICE:
If a DTC is output, perform the troubleshooting procedures for that DTC.

(b) Check if sparks occur.

(1) Remove the ignition coils and spark plugs Removal.

(2) Install the spark plug to the ignition coil and connect the ignition coil connector.

(3) Disconnect the 4 injector connectors.

(4) Ground the spark plug.

(5) Visually check that sparks occur while the engine is being cranked.

NOTICE:
* Be sure to ground the spark plug when checking.
* If the ignition coil has been struck or dropped, replace it.
* Do not crank the engine for more than 2 seconds.
(c) Spark test 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 normal one.

* 2. Perform a spark test again.





(3) Check the spark plug.





(4) Check the power supply to the ignition coil with igniter.

* 1. Turn the ignition switch to ON.

* 2. Check that there is battery voltage at the ignition coil positive (+) terminal.





(5) Check the camshaft position sensor P0340.

(6) Check the crankshaft position sensor P0335.

(d) Connect the 4 injector connectors.

(e) Install the 4 ignition coils and 4 spark plugs Installation.

2. INSPECT SPARK PLUG

NOTICE:
* Do not use a wire brush for cleaning.
* Do not attempt to adjust the electrode gap of a used spark plug.
(a) Check the electrode.

(1) Using a megohmmeter, measure the insulation resistance.





Standard Insulation Resistance:









HINT
If a megohmmeter is not available, perform the following simple inspection.

(b) Alternative inspection method:

(1) Quickly accelerate the engine to 4000 rpm 5 times.

(2) Remove the spark plug.

(3) Visually check the spark plug.

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 thread and insulator.

If there is damage, replace the spark plug. If not, reinstall the spark plug.

Recommended Spark Plug:





(d) Check the spark plug electrode gap.

Maximum electrode gap for used spark plug:

1.3 mm (0.0512 in.)

(e) If the gap is more than the maximum, replace the spark plug.

Electrode gap for new spark plug:

1.0 to 1.1 mm (0.0394 to 0.0433 in.)

NOTICE:
When adjusting the gap of a new spark plug, bend only the base of the ground electrode. Do not touch the tip. Never attempt to adjust the gap of a used plug.

(f) Clean the spark plugs.





(g) If the electrode has traces of wet carbon, clean the electrode with a spark plug cleaner and then dry it.

Air pressure:

588 kPa (6.0 kgf/cm2, 85 psi)

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.