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Section 641 (Engine Fuel System (2AZ-FE)): Precaution: Inspection

WARNING: This page is about a different car, the 2004 Toyota Camry. However, it is still accessible from the selected car via links, so may be relevant.
  1. FUEL INJECTOR ASSY 
    1. Check the injector resistance.
      1. Measure the resistance between the terminals.

        Standard: 11.6 to 12.4 Ω at 20°C (68°F) 

        If the result is not as specified, replace the injector.

    2. Check the injector injection.
      CAUTION:
      • 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 flame.
      • Do not smoke.
      1. Purchase a new fuel tube and take out the fuel tube connector from its pipe.

        Part No. 23801-20190

        Fig 1: Identifying Fuel Tube Connector
        G02892211Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      2. Connect SST and fuel tube connector to the fuel pipe.

        SST 09268-41047

        CAUTION: Always read the precautions (See PRECAUTION ) before connecting the fuel tube connector (quick type).
        Fig 2: Connecting SST & Fuel Tube Connector To Fuel Pipe
        G02892212Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      3. Install the O-ring to the injector.
      4. Connect SST (union and hose) to the injector, and hold the injector and union with SST (clamp).

        SST 09268-41047 (09268-41110, 09268-41300)

        Fig 3: Connecting SST (Union & Hose) To Injector
        G02892213Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      5. Put the injector into a graduated cylinder.

        HINT:

        Install a suitable vinyl tube onto the injector to contain the gasoline spray.

      6. Operate the fuel pump (See REPLACEMENT ).
      7. 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

        Standard: 

        INJECTOR SPECIFIED CONDITION

        Injection Volume Difference Between Each Injector
        76 to 91 cm3 (4.6 to 5.6 cu in.) per 15 seconds 16 cm3 (1.0 cu in.) or less
        NOTE: Always turn on and off the voltage on the battery side, not the fuel pump side.

        If the injection volume is not as specified, replace the injector.

        Fig 4: Connecting SST (Wire) To Injector & Battery
        G02892214Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    3. Check fuel leakage.
      1. In the condition above, disconnect the test probes of SST (wire) from the battery and check the fuel leakage from the injector.

        Fuel drop: 1 drop or less per 12 minutes 

        Fig 5: Checking Fuel Leakage From Injector
        G02892215Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  2. FUEL PUMP 
    1. Check fuel pump resistance.
      1. Measure the resistance between the terminals.

        Resistance: 0.2 to 3.0 Ω at 20°C (68°F) 

    2. Check fuel pump operation.
      1. Apply battery voltage to both terminals. Check that the pump operates.
        NOTE:
        • These tests must be done within 10 seconds to prevent the coil from burning out.
        • Keep fuel pump as far away from the battery as possible.
        • Always turn on and off the voltage on the battery side, not the fuel pump side.
          Fig 6: Identifying Fuel Pump Terminals
          G02892216Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
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