On-Vehicle Inspection

NOTE: "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).

INSPECT IGNITION COIL (WITH IGNITER) AND SPARK TEST

Check that the spark occurs.
1. Remove the ignition coils (with igniter). (see REMOVAL )
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 to 10 seconds at a time.

Perform the spark test according to the flowchart below.

Check that the wire harness side connector of the ignition coil with igniter is securely connected.

Result

RESULT CHART

Result	Proceed to
NG	Connect connector securely.
OK	GO TO NEXT STEP.

Perform a spark test on each ignition coil with igniter.

Replace the ignition coil with igniter with a normal one.

Perform the spark test again.

Result

RESULT CHART

Result	Proceed to
OK	Replace ignition coil with igniter.
NG	GO TO NEXT STEP.

Check the power supply to the ignition coil with igniter.

Turn the ignition switch ON.

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

Result

RESULT CHART

Result	Proceed to
NG	Check wiring between engine switch and ignition coil with igniter.
OK	GO TO NEXT STEP.

Check the resistance of the crankshaft position sensor.

Standard resistance

TEMPERATURE SPECIFIED CONDITION CHART

Temperature	Specified Condition
Cold	985 to 1,600 Ω
Hot	1,265 to 1,890 Ω

Result

RESULT CHART

Result	Proceed to
NG	Replace crankshaft position sensor.
OK	GO TO NEXT STEP.

Check IGT signal from the ECM.

Result

RESULT CHART

Result	Proceed to
NG	Check ECM
OK	Repair wiring between ignition coil and ECM

Using a 16 mm plug wrench, install the 8 spark plugs.
Torque: 17.5 N.m (178 kgf.cm, 13 ft.lbf)
Reinstall the ignition coils (with igniter). (see REMOVAL

INSPECT SPARK PLUGS

Remove the ignition coils (with igniter). (see REMOVAL )
Using a 16 mm plug wrench, remove the spark plugs.

Fig 1: Removing Spark Plugs
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
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 kgf.cm ² , 85 psi)

Duration: 20 seconds or less

HINT:

If there are traces of oil, remove it with gasoline before using the spark plug cleaner.

Fig 2: Cleaning Spark Plugs
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Check the spark plug for thread damage and insulator damage.

If abnormal, replace the spark plug.

Recommended spark plug

RECOMMENDED SPARK PLUG CHART

Manufacturer	Spark Plug Type
DENSO	SK20R11
NGK	IFR6A11

Fig 3: Checking Spark Plug For Thread & Insulator Damage

Adjust the spark plug electrode gap.
Electrode gap for new spark plug: 1.0 to 1.1 mm (0.039 to 0.043 in.)
Using a 16 mm plug wrench, install the spark plugs.
Torque: 17.5 N.m (180 kgf.cm, 13 ft.lbf)
Reinstall the ignition coils (with igniter). (see REMOVAL )

Fig 4: Adjusting Spark Plug Electrode Gap
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002