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SFI System (1GR-FE): Inspection

  1. INSPECT CAMSHAFT TIMING OIL CONTROL VALVE ASSY 
    1. Check the resistance.
      1. Using an ohmmeter, measure the resistance between the terminals.

      Standard: 

      TESTER CONNECTION SPECIFIED CONDITION CHART

      Tester Connection Specified Condition
      1 (+B) - 2 (GND) 6.9 to 7.9Ω at 20°C (68°F)

      If the result is not as specified, replace the camshaft timing oil control valve.

      Fig 1: Measuring Resistance Between Terminals Of Camshaft Timing Oil Control Valve Assy
      G03081597Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Check the operation.
      1. Connect the positive (+) lead from the battery to terminal 1 and negative (-) lead to terminal 2, and check that the valve operates.
      NOTE: Check that the spool valve is not stuck.

      HINT:

      The spool valve may not return if foreign objects are caught in it. This may cause subtle pressure leakage to the advance side, and a DTC may be set.

      Fig 2: Connecting Positive (+) Lead From Battery To Terminal 1 And Negative (-) Lead To Terminal 2
      G03081598Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  2. INSPECT MASS AIR FLOW METER 
    1. Check the operation.
      1. Apply battery voltage across terminals 1 (+B) and 2 (E2G).
      2. Connect the positive (+) tester prove to terminal 3 (VG) and the negative (-) tester prove to terminal 2 (E2G).
      3. Blow air into the mass air flow meter, and check that the voltage fluctuates.

      If the voltage does not fluctuate, replace the mass air flow meter.

      Fig 3: Applying Battery Voltage Across Terminals 1 (+B) And 2 (E2G)
      G03081599Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Check the resistance.
      1. Using an ohmmeter, measure the resistance between terminals 4 (THA) and 5 (E2).

      Standard: 

      13.6 to 18.4 k at 20°C(-4°F) 

      TESTER CONNECTION SPECIFIED CONDITION CHART

      Tester Connection Specified Condition
      4 (THA) -5 (E2) 13.6 to 18.4 k at -20°C (-4°F)
      4 (THA) - 5 (E2) 2.21 to 2.69 k at 20°C (68°F)
      4 (THA) - 5 (E2) 0.493 to 0.667 k at 60°C (140°F)
      Fig 4: Measuring Resistance Between Terminals 4 (THA) And 5 (E2)
      G03081600Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    If the result is not as specified, replace the mass air flow meter.

  3. INSPECT ENGINE COOLANT TEMPERATURE SENSOR 
    1. Check the resistance.
      1. Using an ohmmeter, measure the resistance between the terminals.

      Resistance: 

      TESTER CONNECTION SPECIFIED CONDITION CHART

      Tester Connection Specified Condition
      1 (E2) - 2 (THW) 2.32 to 2.59 k at 20°C (68°F)
      1 (E2) - 2 (THW) 0.310 to 0.326 k at 80°C (176°F)
      NOTE: If checking the engine coolant temperature sensor in water, be careful not to allow water to enter the terminals. After checking, wipe the water off the engine coolant temperature sensor.

      If the result is not as specified, replace the engine coolant temperature sensor.

      Fig 5: Measuring Resistance Between Terminals Of Engine Coolant Temperature Sensor
      G03081601Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  4. INSPECT THROTTLE W/MOTOR BODY ASSY 
    1. Check the resistance.
      1. Using an ohmmeter, measure the resistance between the terminals.

      Standard: 

      TESTER CONNECTION SPECIFIED CONDITION CHART

      Tester Connection Specified Condition
      1 (M-) - 2 (M+) 0.3 to 100 at 20°C (68°F)

      If the result is not as specified, replace the throttle with motor body assembly.

      Fig 6: Identifying Throttle W/Motor Body Assy Connector Terminals
      G03081602Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  5. INSPECT KNOCK SENSOR 
    1. Check the resistance.
      1. Using an ohmmeter, measure the resistance between the terminals.

      Resistance Standard: 

      TESTER CONNECTION SPECIFIED CONDITION CHART

      Tester Connection Specified Condition
      1 (Ground) - 2 (Output) 120 to 180Ω at 20°C (68°F)

      If the result is not as specified, replace the knock sensor.

      Fig 7: Measuring Resistance Between Terminals Of Knock Sensor
      G03081603Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  6. INSPECT MAIN RELAY 
    1. Check the resistance.
      1. Using an ohmmeter, measure the resistance between the terminals.

      Standard: 

      TESTER CONNECTION SPECIFIED CONDITION CHART

      Tester Connection Specified Condition
      3-5 10 k or higher
      3-5 Below 1 (Apply battery voltage to terminals 1 and 2)

      If the result is not as specified, replace the circuit opening relay.

      Fig 8: Measuring Resistance Between Terminals Of Main Relay
      G03081604Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  7. INSPECT E.F.I. CIRCUIT OPENING RELAY ASSY 
    1. Check the resistance.
      1. Using an ohmmeter, measure the resistance between the terminals.

      Standard: 

      TESTER CONNECTION SPECIFIED CONDITION CHART

      Tester Connection Specified Condition
      3-5 10 k or higher
      3-5 Below 1Ω (Apply battery voltage to terminals 1 and 2)

    If the result is not as specified, replace the E.F.I. main relay.

    Fig 9: Measuring Resistance Between Terminals Of E.F.I. Circuit Opening Relay Assy
    G03081605Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
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