Ignition System (1GR-FE): Inspection

WARNING: This page is about a different car, the 2004 Toyota 4Runner. However, it is still accessible from the selected car via links, so may be relevant.

INSPECT SPARK PLUG

Clean the spark plugs.
Air pressure: Below 588 kPa (6kg/cm ² , 85 psi) Duration: 20 seconds or less

Fig 1: Cleaning Spark Plugs
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

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

If there is damage, replace the spark plug.

RECOMMENDED SPARK PLUG

NGK made	LFR6C-11
DENSO made	K20HR-U11

Fig 2: Checking Spark Plug

Adjust electrode gap.
Electrode gap: 1.0-1.1 mm (0.039-0.043 in.)

Maximum electrode gap: 1.46 mm (0.057 in.)

Fig 3: Adjusting Electrode Gap
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

INSPECT VVT SENSOR
1. Using an ohmmeter, measure the resistance between terminals.
  RESISTANCE:
  
  835-1400 Ω at cold
  
  1060-1645 Ω at hot
  
  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 CRANKSHAFT POSITION SENSOR
1. Using an ohmmeter, measure the resistance between terminals.
  RESISTANCE:
  
  1630-2740 Ω at cold
  
  2065-3225 Ω at hot
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).