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 - 10 seconds at a time.
  
  If the spark does not occur, do the test as follows:
  
  Fig 1: Spark Test Flow Chart
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
7. Using a 16 mm plug wrench, install the spark plugs.
  Torque: 17.5 N.m (180 kgf.cm, 13 ft.lbf)
8. Reinstall the ignition coils (with igniter).
  (See INSTALLATION )

INSPECT SPARK PLUGS

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

Fig 2: Removing Spark Plug With Help Plug Wrench
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

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

Fig 3: Locating Spark Plug Cleaner
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:

SPARK PLUG

DENSO made	K20R-U
NGK made	BKR6EYA

Fig 4: Checking Spark Plug For Thread Damage

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Adjust the spark plug electrode gap.
Electrode gap: 0.8 mm (0.031 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 INSTALLATION )

INSPECT CAMSHAFT POSITION SENSOR

Disconnect the camshaft position sensor connector.

Fig 5: Adjusting Spark Plug Electrode Gap
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Using an ohmmeter, measure the resistance between terminals.

Resistance:

MEASURING RESISTANCE

Cold	835 - 1,400 ohm;
Hot	1,060 - 1,645 Ω

If the resistance is not as specified, replace the camshaft position sensor.

Reconnect the camshaft position sensor connector.

Fig 6: Measuring Resistance Between Terminals