On-Vehicle Inspection

NOTE: "Cold" and "Hot" in this section mean 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 AND SPARK TEST
1. Confirm DTCs.
  NOTE: If a DTC is present, perform troubleshooting in accordance with the procedure for that DTC.
2. Check that spark occurs.
  1. Remove the ignition coils.
  2. Using a 16 mm (0.63 in) plug wrench, remove the spark plugs.
  3. Install the spark plugs to each ignition coil, and connect the ignition coil connectors.
  4. Disconnect the 6 injector connectors.
  5. Ground the spark plugs.
  6. Check if spark occurs while the engine is being cranked.
  NOTE:
  - Be sure to ground the spark plugs when checking.
  - Replace the ignition coil when subjected to an impact.
  - Do not crank the engine for more than 2 seconds.
  If spark does not occur, do the test as follows:
  
  Fig 1: Flow Chart Of Spark Test Procedure
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
3. Using a 16 mm (0.63 in.) plug wrench, install the spark plugs.
  Torque: 18 N.m (184 kgf.cm, 13 ft.lbf)
4. Install the ignition coils.
  Torque: 10 N.m (102 kgf.cm, 7 ft.lbf)

INSPECT SPARK PLUGS

Clean the spark plugs.
Air pressure: Below 588 kPa (6 kg/cm ² , 85 psi)

Duration: 20 seconds or less

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

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

If there is damage, replace the spark plug.

Recommended spark plug:

SPARK PLUG SPECIFICATION

NGK made	LFR6C-11
DENSO made	K2OHR-U11

Fig 3: Checking Spark Plug

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Adjust electrode gap.
Electrode gap: 1.0 to 1.1 mm (0.039 to 0.043 in.)

Maximum electrode gap: 1.46 mm (0.057 in.)

Fig 4: Adjusting Electrode Gap

CHECK VVT SENSOR OUTPUT VOLTAGE

Turn the ignition switch to the ON position.
Check that the voltage between terminal VC1 of the ECM and ground is 5 V.
HINT:

For the terminal arrangement of the ECM, see TERMINALS OF ECM .
While turning the crankshaft pulley by hand, measure the voltage between each terminal. Check that the voltage changes between the Hi range and Lo range as shown in the table below.

HINT:

For the terminal arrangement of the ECM, see TERMINALS OF ECM .

TERMINAL REFERENCE

Sensor position	Terminal No.	Voltage (Hi)	Voltage (Lo)
Bank 1	VV1+ <-> VV1-	3.75 to 4.5 V	0.5 to 1.25 V
Bank 2	VV2+ <-> VV2-	3.75 to 4.5 V	0.5 to 1.25 V

INSPECT CRANKSHAFT POSITION SENSOR
1. Using an ohmmeter, measure the resistance between the terminals.
  RESISTANCE:
  
  1630 to 2740 Ω at cold
  
  2065 to 3225 Ω at hot
NOTE: "Cold" and "Hot" mean 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).