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SFI System (2AZ-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

      Tester Connection Specified Condition
      1 (+B) - 2 (GND) 6.9 to 7.9 Ω at 20deg; C (68°F)
      Fig 1: Measuring Resistance Between Terminals
      G03072106Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

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

    2. Check the operation.
      1. Apply battery voltage across the terminals and check that the spool 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 leaks to the advance side, and a DTC may be set.

      Fig 2: Checking Spool Valve
      G03072107Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  2. INSPECT MASS AIR FLOW METER 
    1. Check the operation.
    2. Apply battery voltage across terminals 1 (+B) and 2 (E2G).
    3. Using a voltmeter, connect the positive (+) tester probe to terminal 3(VG), and negative (-) tester probe to terminal 2 (E2G).
    4. Blow air into the mass air flow meter, then check that the voltage fluctuates.

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

      Fig 3: Inspecting Mass Air Flow Meter
      G03072108Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    5. Check the resistance.
      1. Using an ohmmeter, measure the resistance between the terminals.

      Standard: 

      TESTER CONNECTION SPECIFIED CONDITION

      Tester Connection Specified Condition
      4 (THA) - 5 (E2) 13.6 to 18.4 kΩ 2Ωat-20°C (-4°F)
      4 (THA) - 5 (E2) 2.21 to 2.69 kΩ at 20°C (68°F)
      4 (THA) - 5 (E2) 0.493 to 0.667 kΩ at 60°C (140°F)

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

      Fig 4: Measuring Resistance Between Terminals
      G03072109Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  3. INSPECT ENGINE COOLANT TEMPERATURE SENSOR 
    1. Check the resistance.
      1. Using an ohmmeter, measure the resistance between the terminals.

      Standard: 

      TESTER CONNECTION SPECIFIED CONDITION

      Tester Connection Specified Condition
      1 (E2) - 2 (THW) 2.32 to 2.59 kΩ at 20°C (68°F)
      1 (E2) - 2 (THW) 0.310 to 0.326 kΩ at 80°C (176°F)
      NOTE: If checking the engine coolant temperature sensor in water, be careful not to allow water to intrude into 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
      G03072110Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  4. INSPECT THROTTLE BODY ASSY 
    1. Check the resistance.
      1. Using an ohmmeter, measure the resistance between the terminals.

      Standard: 

      TESTER CONNECTION SPECIFIED CONDITION

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

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

      Fig 6: Measuring Resistance Between Terminals
      G03072111Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  5. INSPECT KNOCK SENSOR 
    1. Check the resistance.
      1. Using an ohmmeter, measure the resistance between the terminals.

      Standard: 

      TESTER CONNECTION SPECIFIED CONDITION

      Tester Connection Specified Condition
      1 (Ground) - 2 (Output) 120 to 280 kΩ at 20°C (68°F)

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

      Fig 7: Measuring Resistance Between Terminals
      G03072112Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  6. INSPECT ACCELERATOR PEDAL ASSY 
    1. Check the resistance.
      1. Using an ohmmeter, measure the resistance between the terminals.

      Standard: 

      TESTER CONNECTION SPECIFIED CONDITION

      Tester Connection Specified Condition
      3 (EP1) - 6 (VCP1) 1.5 to 6.0 kΩ
      1 (EP2) - 4 (VCP2) 1.5 to 6.0 kΩ

      If the result is not as specified, replace the accelerator pedal rod.

      Fig 8: Measuring Resistance Between Terminals
      G03072113Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  7. INSPECT MAIN RELAY 
    1. Check the resistance.
      1. Using an ohmmeter, measure the resistance between the terminals.

      Standard: 

      TESTER CONNECTION SPECIFIED CONDITION

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

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

      Fig 9: Measuring Resistance Between Terminals
      G03072114Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  8. INSPECT CIRCUIT OPENING RELAY 
    1. Check the resistance.
      1. Using an ohmmeter, measure the resistance between the terminals.

      Standard: 

      TESTER CONNECTION SPECIFIED CONDITION

      Tester Connection Specified Condition
      1B (11) - 1A (8) 10 kΩ or higher
      1B (11) - 1A (8) Below 1° (Apply battery voltage to terminals 1E (5) and 1D (1))

      If the result is not as specified, replace the instrument panel junction block.

      Fig 10: Measuring Resistance Between Terminals
      G03072115Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
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