On-Vehicle Inspection

CHECK IGNITION COIL ASSEMBLY AND PERFORM SPARK TEST

NOTE: In this section, the terms "Cold" and "Hot" refer to the temperature of the sensor. "Cold" means approximately -10 to 50°C (14 to 122°F). "Hot" means approximately 50 to 100°C (122 to 212°F).

Check the DTCs.
NOTE: If a DTC is present, perform troubleshooting in accordance with the procedure for that DTC.
Check that sparks occur.
1. Remove the V-bank cover.
2. Remove the intake air surge tank (see REMOVAL ).
3. Remove the bolt and ignition coil.
4. Using a 16 mm spark plug wrench, remove the spark plug.
5. Disconnect the 6 fuel injector connectors.
  
  Fig 1: Locating Fuel Injector Connectors
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
6. Install the spark plug into the ignition coil, and then connect the ignition coil connectors.
7. Ground the spark plug.
8. Check that sparks occur at the spark plug while the engine is being cranked.
  NOTE:
  - Be sure to ground the spark plugs when checking them.
  - If the ignition coil has been struck or dropped, replace it.
  - Do not crank the engine for more than 2 seconds.
    
    Fig 2: Checking Spark Plug For Sparks And Ignition
    Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  If sparks do not occur, perform troubleshooting using the spark test flowchart.
9. Using a 16 mm plug wrench, install the spark plug.
  Torque: 25 N*m (254 kgf*cm, 18 ft.*lbf)
10. Install the ignition coil with the bolt.
  Torque: 10 N*m (102 kgf*cm, 7 ft.*lbf)
11. Connect the 6 fuel injector connectors.
12. Install the intake air surge tank (see INSTALLATION ).
13. Install the V-bank cover.

Perform troubleshooting using the spark test flowchart.

Check that the ignition coil connector is securely connected.

Result

RESULT REFERENCE

Result	Proceed to
NG	Connect securely
OK	Go to next step

Perform the spark test on each ignition coil.

Replace the ignition coil with a normal one.

Perform the spark test again.

Result

RESULT REFERENCE

Result	Proceed to
OK	Replace ignition coil
NG	Go to next step

Check the power supply to the ignition coil.

Disconnect the ignition coil connector.
Turn the ignition switch to ON.

Measure the voltage of the wire harness side connector.

Standard voltage

STANDARD VOLTAGE SPECIFICATION

Tester Connection	Specified Condition
1 (+B) - 4 (GND)	9 to 14 V

Result

RESULT REFERENCE

Result	Proceed to
NG	Check wire harness and connector
OK	Go to next step

Fig 3: Measuring Voltage Between Terminals Of Wire Harness Side Connector

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Check the resistance of the crankshaft position sensor.

Standard resistance

STANDARD RESISTANCE SPECIFICATION

Temperature Condition	Specified Condition
Cold	1,630 to 2,740 Ω
Hot	2,065 to 3,225 Ω

Result

RESULT REFERENCE

Result	Proceed to
NG	Replace crankshaft position sensor
OK	Go to next step

Check the IGT signal from the ECM.

Result

RESULT REFERENCE

Result	Proceed to
NG	Check ECM (see DTC P0351 IGNITION COIL "A" PRIMARY / SECONDARY CIRCUIT; DTC P0352 IGNITION COIL "B" PRIMARY / SECONDARY CIRCUIT; DTC P0353 IGNITION COIL "C" PRIMARY / SECONDARY CIRCUIT; DTC P0354 IGNITION COIL "D" PRIMARY / SECONDARY CIRCUIT; DTC P0355 IGNITION COIL "E" PRIMARY / SECONDARY CIRCUIT; DTC P0356 IGNITION COIL "F" PRIMARY / SECONDARY CIRCUIT )
OK	Repair wiring between ignition coil and ECM

CHECK SPARK PLUG

Check the electrode with megohmmeter:
1. Using a megohmmeter, measure the insulation resistance.
  Standard insulation resistance:
  
  10 MΩ or more
  
  If the result is 10 MΩ or less, clean the plug and measure the resistance again.
  
  Fig 4: Measuring Insulation Resistance
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
Check the electrode without megohmmeter:
1. Quickly accelerate the engine to 4,000 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.

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

If there is damage, replace the spark plug.

Fig 5: Checking Electrode

Recommended spark plug

RECOMMENDED SPARK PLUG REFERENCE

Manufacturer	Spark plug type
DENSO	FK20HR11

NOTE: Use only the listed spark plug or equivalent for engine performance and smooth driveability.

Check the spark plug electrode gap.
Maximum electrode gap for used spark plug:

1.4 mm (0.055 in.)

If the gap is greater than the maximum, replace the spark plug.

Electrode gap for new spark plug:

1.0 to 1.1 mm (0.039 to 0.043 in.)

Fig 6: Checking Spark Plug Electrode Gap
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

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

Standard air pressure:

588 kPa (6 kgf/cm ² , 85 psi)

Standard duration:

20 seconds or less

HINT:

Only use the 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.

Fig 7: Cleaning Electrode With Spark Plug Cleaner
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002