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 ASSY AND SPARK TEST
1. Check for DTCs.
  NOTE: If any DTC is present, perform troubleshooting in accordance with a 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 at each spark plug while the engine is being cranked.
  NOTE:
  - Be sure to ground the spark plug when checking.
  - Replace the ignition coil if it receives an impact.
  - Do not crank the engine for more than 2 seconds.
  If spark does not occur, do the following test:
  
  Fig 1: Spark Test Flow Chart
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
3. Using a 16 mm (0.63 in.) plug wrench, install the spark plugs.
  Torque: 20 N.m (204 kgf.cm, 13 ft.lbf)
4. Install the ignition coils.
  Torque: 10 N.m (102 kgf.cm, 7 ft.lbf)

CHECK VVT SENSOR OUTPUT VOLTAGE

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

For the terminal arrangement of the engine ECU, 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 shown in HI RANGE AND LO RANGE .

HINT

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

HI RANGE AND LO RANGE

Sensor position	Terminal No.	Voltage (Hi)	Voltage (Lo)
Bank 1	VV1+ <-> VV1-	3.375 to 4.950	0.450 to 1.375
Bank 2	VV2+ <-> VV2-	3.375 to 4.950	0.450 to 1.375