Fuel System (2TR-FE): Inspection

INSPECT FUEL INJECTOR ASSY
1. Check the resistance.
  1. Using an ohmmeter, measure the resistance between the terminals.
    Resistance: 11.6 to 12.4Ω at 20°C (68°F)
    
    If the result is not as specified, replace the fuel injector.
2. Check the injection volume.
  
  Fig 1: Measuring Resistance Between Terminals Of Fuel Injector Assy
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  
  CAUTION: This test involves high-pressure fuel and electricity, therefore, safety precautions should be taken. Perform this test in a safe area and avoid any sparks and flames. Do not smoke.
  1. Discharge the fuel system pressure (See PRECAUTION ).
  2. Remove the fuel hose from the fuel pressure pulsation damper (see REPLACEMENT ).
  3. Remove the fuel hose from the fuel pipe (See PRECAUTION ).
  4. Separate the pressure regulator (see REPLACEMENT )
    NOTE: Do not separate the fuel hose No. 2.
  5. Assemble SST as shown in the illustration.
    SST 09268-41048 (09268-41091, 09268-41110, 09268-41120, 09268-41500, 95336-08070, 90467-13001)
    
    Fig 2: Assembling SST
    Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  6. Connect SST to the fuel pipe.
    SST 09268-41048 (09268-41500, 90467-13001)
    
    Fig 3: Connecting SST To Fuel Pipe
    Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  7. Install the pressure regulator onto SST (union) with the 2 bolts.
    Torque: 8.5 N.m (87 kgf.cm, 75 in..lbf)
    
    SST 09268-41048 (09268-41091)
    
    NOTE: Make sure that the O-ring is installed onto the pressure regulator.
    
    Fig 4: Installing Pressure Regulator Onto SST
    Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  8. Install the O-ring onto the injector.
  9. Assemble SST as shown in the illustration.
    SST 09268-41048 (09268-41110, 09268-41310)
  10. Put the injector into a graduated cylinder.
    CAUTION: Install a suitable vinyl tube onto the injector to contain any gasoline spray.
    
    Fig 5: Assembling SST
    Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  11. Make sure that SST is installed as shown in the illustration.
  12. Operate the fuel pump (See ON-VEHICLE INSPECTION ).
    
    Fig 6: Installing SST
    Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  13. Connect SST (wire) to the injector and the battery for 15 seconds, and measure the injection volume with a graduated cylinder. Test each injector 2 or 3 times.
    SST 09842-30080
    
    Volume: 71 to 86 cm ³ (4.3 to 5.2 cu in.) per 15 seconds Difference between each injector:
    
    15 cm ³ (0.9 cu in.) or less
    
    If the injection volume is not as specified, replace the injector.
    
    Fig 7: Connecting SST (Wire) To Injector And Battery
    Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
3. Check the leakage.
  1. In the condition above, disconnect the tester probes of SST (wire) from the battery and check the fuel leakage from the injector.
  Fuel drop: 1 drop or less in 12 minutes
  
  Fig 8: Checking Leakage
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
INSPECT FUEL PUMP ASSY
1. Check the resistance.
  1. Using an ohmmeter, measure the resistance between the terminals.
    Resistance: 0.2 to 3.0Ω at 20°C (68°F)
2. Check the operation.
  1. Apply battery voltage to both terminals. Check that the pump operates.
    
    Fig 9: Identifying Fuel Pump Assy Connector Terminal
    Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  NOTE:
  - These tests must be performed quickly (within 10 seconds) to prevent damage to the pump.
  - Keep the fuel pump as far away from the battery as possible.
  - Always do the switching at the battery side.