SFI System (1GR-FE): Inspection

WARNING: This page is about a different car, the 2005 Toyota 4Runner. However, it is still accessible from the selected car via links, so may be relevant.

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

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.

Fig 5: Inspecting Engine Coolant Temperature Sensor
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

INSPECT CIRCUIT OPENING RELAY

Continuity inspection.

Using an ohmmeter, check for continuity between each terminal.

Specified condition:

CIRCUIT OPENING RELAY

Between terminals	Specified condition
1 - 2	Continuity
3 - 5	No continuity

Fig 6: Checking Continuity Between Each Terminal Using Ohmmeter

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Using an ohmmeter, check for continuity between terminals 3 and 5 when the battery voltage is applied across terminals 1 and 2.

Specified condition: Continuity

INSPECT EFI RELAY

Continuity inspection.

Using an ohmmeter, check for continuity between each terminal.

Specified condition:

EFI RELAY

Between terminals	Specified condition
1 - 2	Continuity
3 - 5	No continuity

Using an ohmmeter, check for continuity between terminals 3 and 5 when the battery voltage is applied across terminals 1 and 2.

Specified condition: Continuity

Fig 7: Checking For Continuity Between Terminals 3 And 5 Using Ohmmeter