Inspect "Basic inspection" and "System inspection". Inspect "Basic inspection" first.
Click on "Fuel" item and inspect fuel quality.
If fuel quality is normal,
▶ Click on "Spark plug" item for more details.
▶ Click on "Ignition coil" item for more details.
▶ Click on "MAFS" item for more details.
▶ Click on "TPS" item for more details.
If all components are normal, Go to "System inspection" procedure.