Fuel Injector: Inspection

WARNING: This page is about a different car, the 2006 Scion tC. However, it is still accessible from the selected car via links, so may be relevant.

INSPECT FUEL INJECTOR ASSEMBLY
1. Measure the resistance between the injector terminals.
  Standard resistance: 11.6 to 12.4 Ω at 20°C (68°F)
  
  If the result is not as specified, replace the injector.
2. Inspect the injector injection.
  CAUTION: Keep the injector away from sparks during the test.
  
  Fig 1: Measuring Resistance Between Injector Terminals
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  1. Install the fuel tube connector to SST (hose). Then connect the tube connector to the fuel pipe (vehicle side).
    SST 09268-41048 (09268-41500, 90467-13001, 95336-08070)
  2. Install the O-ring to the fuel injector.
    
    Fig 2: Installing Fuel Tube Connector To SST (Hose)
    Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  3. Connect SST (adapter and hose) to the injector, and hold the injector and union with SST (clamp).
    SST 09268-41048 (90467-13001, 09268-41110, 09268-41300)
  4. Put the injector into the graduated cylinder.
    CAUTION: Install a suitable vinyl tube onto the injector to contain gasoline spray.
  5. Operate the fuel pump.
    
    Fig 3: Connecting SST To Injector
    Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  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.
    SST 09842-30080
    
    Standard injection volume: 76 to 92cm ³ (4.6 to 5.6 cu in.) per 15 seconds
    
    Standard difference between each injector: 16 cm ³ (1.0 cu in.) or less
    
    Fig 4: Connecting SST (Wire) To Injector And Battery
    Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
3. Inspect the fuel leakage.
  1. Disconnect the SST (wire) tester probes from the battery and check the fuel leakage from the injector.
    Standard fuel drop: 1 drop or less per 12 minutes
  2. Turn the ignition switch OFF.
  3. Disconnect the cable from the negative (-) battery terminal.
  4. Remove SST.
    SST 09268-41048 (09268-41500, 90467-13001, 95336-08070, 09268-41110, 09268-41300), 09842-30080
  5. Disconnect the intelligent tester from the DLC3.
  6. Reconnect the fuel inlet hose (rear fuel pipe) to the fuel main tube.
Fig 5: Inspecting Fuel Leakage
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002