Fuel Injector: Inspection

INSPECT FUEL INJECTOR ASSEMBLY
1. Measure the resistance between the injector terminals.
  Standard resistance:
  
  13.4 to 14.2 Ω at 20°C (68 °F)
  
  Fig 1: Measuring Resistance Between Injector Terminals
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  
  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.
  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: Identifying 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)
    
    Fig 3: Identifying SST (Adapter And Hose) To Injector
    Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  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.
  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 09842-30070
    
    Injection volume:
    
    60 to 73 cm3 (3.7 to 4.5 cu in.) per 15 seconds
    
    Difference between each injector:
    
    13 cm3 (0.8 cu in.) or less
    
    Fig 4: Identifying SST (Wire) To Injector And Battery
    Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
3. Connect the intelligent tester to the DLC3.
  
  Fig 5: Identifying Intelligent Tester To DLC3
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
4. Connect the battery's negative (-) cable to the battery.
5. Turn the engine switch on (IG), and push the intelligent tester main switch ON.
  NOTE: Do not start the engine.
6. Select the ACTIVE TEST mode on the intelligent tester.
  HINT:
  
  Refer to the intelligent tester operator's manual for further details.
7. If no intelligent tester is available, connect the battery's positive (+) and negative (-) leads to the fuel pump connector.
8. Connect SST (wire) to the injector and battery for 15 seconds, and measure the injection volume with a graduated cylinder. Test each injector 2 or 3 times.
  SST 09268-41048 (09268-41500, 90467-13001, 95336-08070, 09268-41110, 09268-41300), 09842-30070
  
  Injection volume:
  
  60 to 73 cm3 (3.7 to 4.5 cu in.) per 15 seconds
  
  Difference between each injector:
  
  13 cm3 (0.8 cu in.) or less
  
  Fig 6: Identifying SST (Wire) To Injector And Battery
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
9. Inspect the fuel leakage.
  1. In the condition above, disconnect the SST (wire) tester probes from the battery and check the fuel leakage from the injector.
    Fuel drop:
    
    1 drop or less per 12 minutes
    
    Fig 7: Inspecting Fuel Leakage From Injector
    Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  2. Turn the engine 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), 09842-30070
  5. Disconnect the intelligent tester from the DLC3.
  6. Reconnect the fuel inlet hose (rear fuel pipe) to the fuel main tube.