Система Зажигания -- Проверка Без Снятия С Автомобиля |
- УКАЗАНИЕ:
- In this section, the terms "Cold" and "Hot" refer to the temperature of the coils. "Cold" means approximately -10 to 50°C (14 to 122°F). "Hot" means approximately 50 to 100°C (122 to 212°F).
1. PERFORM IGNITION COIL AND SPARK TEST |
Check for DTCs.
- ПРИМЕЧАНИЕ:
- If any DTC is present, perform troubleshooting in accordance with the procedure for that DTC.
Check whether sparks occur.
Remove the 4 ignition coils and 4 spark plugs (See page Нажмите здесь).
Disconnect the 4 injector connectors.
Install the spark plug onto each ignition coil and connect the ignition coil connectors.
Ground the spark plugs.
Check that sparks occur while the engine is being cranked.
- ПРИМЕЧАНИЕ:
- Ground the spark plug when checking it.
- Replace any ignition coils that have been subjected to any physical impact.
- Do not crank the engine for more than 2 seconds.
Perform the spark test in accordance with the following procedure.
Check that the wire harness side connector of the ignition coil with igniter is securely connected.
- Result:
Result Proceed to NG Connect securely OK Go to next step
Perform a spark test on each ignition coil with igniter.
- Replace the ignition coil with igniter with a functioning one.
- Perform the spark test again.
- Result:
Result Proceed to OK Replace ignition coil with igniter NG Go to next step
- Replace the ignition coil with igniter with a functioning one.
Check the spark plug.
- Result:
Result Proceed to NG Replace spark plug OK Go to next step
Check that power is supplied to the ignition coil with igniter.
- Turn the ignition switch on (IG).
- Check that battery voltage is applied to the positive (+) terminal of the ignition coil.
- Result:
Result Proceed to NG Check wiring between ignition switch and ignition coil with igniter OK Go to next step
- Turn the ignition switch on (IG).
Check the resistance of the crankshaft position sensor (See page Нажмите здесь).
- Result:
Result Proceed to NG Replace crankshaft position sensor OK Go to next step
Check the IGT from the ECM (See page Нажмите здесь).
- Result:
Result Proceed to NG Check ECM OK Repair wiring between ignition coil and ECM
Connect the 4 injector connectors.
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Install the 4 ignition coils and 4 spark plugs (See page Нажмите здесь).
2. INSPECT SPARK PLUG |
- ПРИМЕЧАНИЕ:
- Do not use a wire brush for cleaning.
- Do not attempt to adjust the electrode gap of a used spark plug.
Check the electrode.
Using a megohmmeter, measure the insulation resistance.
- Standard resistance:
- 10 MΩ or more
- УКАЗАНИЕ:
- If the result is not as specified, clean the spark plug with a spark plug cleaner and measure the resistance again.
- If a megohmmeter is not available, perform the following simple inspection instead.
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Alternative inspection method:
Quickly accelerate the engine to 4000 rpm 5 times.
Remove the spark plug.
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 to its thread and insulator.
If there is any damage, replace the spark plug.- Recommended spark plug:
Manufacturer Product DENSO SC20HR11
Reference:
Check the spark plug electrode gap.
- Maximum electrode gap for used spark plug:
- 1.3 mm (0.051 in.)
- Electrode gap for new spark plug:
- 1.0 to 1.1 mm (0.039 to 0.043 in.)
Clean the spark plug.
If the electrode has traces of wet carbon, clean the electrode with a spark plug cleaner and then dry it.- Air pressure:
- 588 kPa (6 kgf/cm2, 85 psi)
- Duration:
- 20 seconds or less
- УКАЗАНИЕ:
- 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.