SFI System: Inspection

WARNING: This page is about a different car, the 2004 Lexus SC 430. However, it is still accessible from the selected car via links, so may be relevant.

INSPECT CAMSHAFT TIMING OIL CONTROL VALVE ASSY
1. Using an ohmmeter, measure the resistance between the terminals.
  Resistance: 6.9 - 7.9 +/- at 20°C (68°F)
2. 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: Identifying Direction Of Movement Of Valve
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  
  Fig 2: Inspecting Camshaft Timing Oil Control Valve Assy
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  
  If operation is not as specified, replace the valve.
INSPECT E.F.I. CIRCUIT OPENING RELAY ASSY
1. Using an ohmmeter, check that there is continuity between terminals 1 and 2.
2. Check that there is no continuity between terminals 3 and 5.
  
  Fig 3: Inspecting E.F.I. Circuit Opening Relay Assy
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
INSPECT E.F.I ECU RELAY
1. Using an ohmmeter, check that there is continuity between terminals 1 and 2.
2. Check that there is no continuity between terminals 3 and 5.
  
  Fig 4: Inspecting E.F.I ECU Relay
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
INSPECT FUEL PUMP RELAY ASSY
1. Inspect the relay continuity.
  1. Using an ohmmeter, check that there is continuity between the terminals.
    Resistance:
    
    Fig 5: Fuel Pump Relay Assy Terminals Resistance
    Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    
    Fig 6: Inspecting Fuel Pump Relay Assy
    Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
INSPECT CAMSHAFT POSITION SENSOR
1. Using an ohmmeter, measure the resistance between the terminals.
  Resistance:
  
  Fig 7: Camshaft Position Sensor Terminals Resistance
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  
  NOTE: Terms "when cold" and "when hot" in this text show the temperature of the part itself to be inspected.
  
  Also, the temperature setting range is 20 +/- 30°C when cold and 75 +/- 25°C when hot.