SFI System (3MZ-FE): Inspection

INSPECT CAMSHAFT TIMING OIL CONTROL VALVE ASSY
1. Inspect the resistance.
  1. Using an ohmmeter, measure the resistance between the terminals.
    Standard:
    
    Fig 1: Measuring Camshaft Timing Oil Control Valve Assy Resistance (1 Of 2)
    Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    
    If the resistance is not as specified, replace the camshaft timing oil control valve.
    
    Fig 2: Measuring Camshaft Timing Oil Control Valve Assy Resistance (2 Of 2)
    Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
2. Check the operation.
  1. Connect the positive (+) lead from the battery to terminal 2 (+) and negative (-) lead to terminal 1 (-), then check the movement of the spool valve.
    
    Fig 3: Checking Camshaft Timing Oil Control Valve Operations
    Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    
    NOTE: Confirm that the spool valve moves freely and does not get stuck in any position.
    
    HINT:
    
    Bad returning of the spool valve resulted from catching foreign objects causes subtle pressure leak to the advanced direction. In that case, DTC can be detected.
INSPECT MASS AIR FLOW METER
1. Check the operation.
  1. Apply battery voltage across terminals 1 (+B) and 2 (E2G).
  2. Using voltmeter, connect the positive (+) tester probe to terminal 3 (VC), and negative (-) tester probe to terminal 2 (E2G).
  3. Blow air into the mass air flow sensor, then check that the voltage fluctuates.
    
    Fig 4: Checking Mass Air Flow Meter Operation
    Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  If the operation is not as specified, replace the mass air flow sensor.
2. Inspect the resistance.
  1. Using an ohmmeter, measure the resistance between the terminals.
    Standard:
    
    Fig 5: Measuring Mass Air Flow Meter Resistance (1 Of 2)
    Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    
    If the resistance is not as specified, replace the mass air flow sensor.
    
    Fig 6: Measuring Mass Air Flow Meter Resistance (2 Of 2)
    Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
INSPECT ENGINE COOLANT TEMPERATURE SENSOR
1. Inspect the resistance.
  1. Using an ohmmeter, measure the resistance between the terminals.
    Standard:
    
    Fig 7: Inspecting Engine Coolant Temperature Sensor (1 Of 2)
    Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    
    NOTE: When checking the engine coolant temperature sensor in water, be careful not to allow water to intrude into the terminals. Then dry the engine coolant temperature sensor after checking.
    
    If the resistance is not as specified, replace the engine coolant temperature sensor.
    
    Fig 8: Inspecting Engine Coolant Temperature Sensor (2 Of 2)
    Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
INSPECT THROTTLE BODY ASSY
1. Inspect the resistance.
  1. Using an ohmmeter, measure the resistance between the terminals.
    Standard:
    
    Fig 9: Inspecting Throttle Body Assy (1 Of 2)
    Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    
    If the resistance is not as specified, replace the throttle body.
    
    Fig 10: Inspecting Throttle Body Assy (2 Of 2)
    Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
INSPECT KNOCK SENSOR
1. Inspect the resistance.
  1. Using an ohmmeter, measure the resistance between the terminals.
    Standard:
    
    Fig 11: Inspecting Knock Sensor (1 Of 2)
    Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    
    If the resistance is not specified, replace the knock sensor.
    
    Fig 12: Inspecting Knock Sensor (2 Of 2)
    Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
INSPECT ACCELERATOR PEDAL ASSY (NORMAL PEDAL)
1. Inspect the resistance.
  1. Using an ohmmeter, measure the resistance between the terminals.
    Standard:
    
    Fig 13: Inspecting Accelerator Pedal Assy (Normal Pedal) (1 Of 2)
    Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    
    If the resistance is not specified, replace the accelerator pedal.
    
    Fig 14: Inspecting Accelerator Pedal Assy (Normal Pedal) (2 Of 2)
    Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
INSPECT ACCELERATOR & BRAKE PEDAL ASSY (POWER PEDAL)
1. Inspect the resistance.
  1. Using an ohmmeter, measure the resistance between the terminals.
    Standard:
    
    Fig 15: Inspecting Accelerator & Brake Pedal Assy (Power Pedal) (1 Of 2)
    Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    
    If the resistance is not specified, replace the accelerator & brake pedal.
    
    Fig 16: Inspecting Accelerator & Brake Pedal Assy (Power Pedal) (2 Of 2)
    Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
INSPECT MAIN RELAY
1. Inspect the resistance.
  1. Using an ohmmeter, measure the resistance between the terminals.
    Standard:
    
    Fig 17: Inspecting Main Relay (1 Of 2)
    Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    
    If the result is not as specified, replace the main relay.
    
    Fig 18: Inspecting Main Relay (2 Of 2)
    Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
INSPECT CIRCUIT OPENING RELAY
1. Inspect the resistance.
  1. Using an ohmmeter, measure the resistance between the terminals.
    Standard:
    
    Fig 19: Inspecting Circuit Opening Relay (1 Of 2)
    Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    
    If the result is not as specified, replace the circuit opening relay.
    
    Fig 20: Inspecting Circuit Opening Relay (2 Of 2)
    Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002