Inspection (To 12/2010): Inspection

INSPECT FUEL INJECTOR ASSEMBLY
1. Inspect injector resistance.
  1. Using an ohmmeter, measure the resistance between the terminals.
    Resistance
    
    11.6 to 12.4 Ω at 20°C (68°F)
    
    If the resistance is not as specified, replace the injector.
2. Inspect the injection volume.
  NOTE:
  - This test involves high-pressure fuel and electricity. Take every precaution regarding safe handling of both the fuel and the electricity.
  - Perform this test in a safe area, and avoid any sparks or flames. Do not smoke.
  1. Install the fuel tube connector to SST (hose), then connect the tube connector to the fuel pipe (vehicle side).
    
    Fig 1: Installing Tube Connector To Fuel Pipe Using SST
    Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    - SST: 09268-31013
      - 09268-41500
      - 90467-13001
      - 95336-08070
  2. Install the O-ring to the fuel injector.
    
    Fig 2: Connecting SST (Adaptor, Hose And Clamp) To Injector
    Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  3. Connect SST (adaptor and hose) to the injector, and hold the injector and union with SST (clamp).
    - SST: 09268-31013
      - 09268-41141
      - 09268-41410
      - 90467-13001
      - 95336-08070
  4. Put the injector into the graduated cylinder.
    WARNING:
    Install a suitable vinyl tube onto the injector to contain gasoline spray.
  5. Operate the fuel pump. Refer to ON-VEHICLE INSPECTION .
  6. Connect SST (wire) to the injector and the battery for 15 seconds, and measure the injection volume with the graduated cylinder. Test each injector 2 or 3 times.
    
    Fig 3: Connecting SST (Wire) To Injector And Battery
    Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    - SST: 09842-30080
    Volume
    
    84 to 100 cm³ (5.1 to 6.0 cu in.) in 15 seconds
    
    Difference between each injector
    
    16 cm³ (0.96 cu in.) or less
    
    If the injection volume is not as specified, replace the injector.
3. Check the leakage.
  
  Fig 4: Checking For Fuel Leakage From Injector
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  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 16 minutes