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).

INSPECT IGNITION COIL (WITH IGNITER) AND SPARK TEST
1. Check for DTCs.
  NOTE: If a DTC is present, perform troubleshooting in accordance with the procedure for that DTC.
2. Check that a spark occurs.
  1. Remove the cylinder head cover No. 2. (See REPLACEMENT )
  2. Remove the ignition coils (with igniter).
  3. Using a 16 mm (0.63 in) plug wrench, remove the spark plugs.
  4. Install each spark plug to an ignition coil (with igniter), then connect the ignition coil connectors.
  5. Disconnect the 4 injector connectors.
  6. Ground the spark plugs.
  7. Check that a 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 physical impact is felt while holding the spark plug.
  - Do not crank the engine for more than 2 seconds.
  If the spark does not occur, do the test as follows.
  
  Fig 1: Ignition System On-Vehicle Inspection Test
  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 coil with igniter.
  Torque: 9.0 N.m (92 kgf.cm, 80 in.lbf)
5. Install the cylinder head cover No. 2. (See REPLACEMENT )

When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

• You smell fuel, burning insulation, or see smoke.

• Brakes feel soft, pull hard to one side, or make grinding noises.

• The engine overheats, stalls repeatedly, or misfires under load.

• You are missing required tools, torque specs, or safe lifting equipment.

• You are not confident in the next step or safety outcome.

Safety Warning

On-Vehicle Inspection

Use the Manual With the Right Hardware

When to See a Mechanic