Safety Warning

DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.

2005 Toyota 4Runner Sport, 4.7 T, RWDFACTORY OEM SERVICE PROCEDURE

SFI System (1GR-FE): Inspection

INSPECT CAMSHAFT TIMING OIL CONTROL VALVE ASSY
1. Resistance inspection.
  1. Using an ohmmeter, measure the resistance between the terminals.
  Resistance: 6.9 - 7.9 Ω at 20°C (68°F)
2. Movement inspection.
  1. Connect the positive (+) lead from the battery to terminal 1 and negative (-) lead to terminal 2, and check the movement of the valve.
  Fig 1: Checking Movement Of Valve
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
NOTE: Confirm the valve does not adhere.

HINT

Bad returning of the valve by catching foreign objects causes subtle pressure leak to the advanced direction. DTC could be detected.
INSPECT MASS AIR FLOW METER
1. Output voltage inspection.
  1. Apply battery voltage across terminals 1 (+B) and 2 (E2G).
  2. Connect the positive (+) tester prove to terminal 3 (VG), and negative (-) tester prove to terminal 2 (E2G).
  3. Blow air into the MAF meter, and check if the voltage fluctuates.
2. Resistance inspection.
  1. Using an ohmmeter, measure resistance between the terminals 4 (THA) and 5 (E2).
  Resistance:
  - 13.6 - 18.4 kΩ at 20°C (-4°F)
  - 2.21 - 2.69 kΩ at 20°C (68°F)
  - 0.49 - 0.67 kΩ at 60°C (140°F)
Fig 2: Inspecting Mass Air Flow Meter
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

INSPECT THROTTLE W/MOTOR BODY ASSY

Using an ohmmeter, measure the resistance between the terminals.

Resistance:

THROTTLE W/MOTOR BODY

Terminal No.	Resistance
2 (M+) 1 (M-)	0.3-100Ω at 20°C (68°F)

Fig 3: Measuring Resistance Between Terminals Of Throttle W/Motor Body

G02578046

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

INSPECT KNOCK SENSOR
1. Using an ohmmeter, measure the resistance between terminals.
  Resistance: 120 - 280 kΩ at 20°C (68°F)
HINT:

If the resistance is not as specified, replace the sensor.

Fig 4: Measuring Resistance Between Terminals Of Knock Sensor Using Ohmmeter
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
INSPECT ENGINE COOLANT TEMPERATURE SENSOR
1. Resistance inspection.
  1. Using an ohmmeter, measure the resistance between terminals.
  Resistance:
  - 2.32 - 2.59 kΩ at 20°C (68°F)
  - 0.310 - 0.326 kΩ at 80°C (176°F)
NOTE: When inspecting the water temperature sensor in water, prevent water flow into the terminals. After inspection, wipe the water off from the sensor.

Factory Service Tools

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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.

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