SFI System: Injector: Inspection

Fig 1: Inspecting Injector Injection

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

1. Purchase the new No.1 fuel pipe and take out the fuel tube connector from its pipe.

   Part No. 23801-20070

   Fig 2: Inspecting Fuel Tube Connector

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
2. Connect SST (hose) and fuel tube connector to the fuel filter outlet.

   SST 09268-41047

   CAUTION: Preform connecting operations of the fuel tube connector (quick type) after observing the precautions (See PRECAUTION ).

   HINT:

   Use the vehicle fuel filter.

   Fig 3: Connecting SST

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
3. Install the grommet and 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

5. Put the injector into a graduated cylinder.

   HINT:

   Install a suitable vinyl hose onto the injector to prevent gasoline from splashing out.

   Fig 4: Installing Grommet And O-Ring To Injector

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
6. Connect the TOYOTA hand-held tester to the DLC3.
7. Turn the ignition switch ON and push the TOYOTA handheld tester main switch ON.
   NOTE: Do not start the engine.
8. Select the ACTIVE TEST mode on the TOYOTA handheld tester.
9. Please refer to the TOYOTA hand-held tester operator's manual for further details.
   Fig 5: Connecting Toyota Hand-Held Tester To DLC3

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
10. If you have no TOYOTA hand-held tester, connect the positive (+) and negative (-) leads from the battery to the fuel pump connector (See FUEL PUMP ).
11. 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 09842-30070

    Volume: 60 - 73 cm ³  (3.4 - 4.5 cu in.) per 15 sec. 

    Difference between each injector: 

    13 cm ³  (0.8 cu in.) or less 

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

Fig 6: Connecting SST (Wire) To Injector

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

1. In the condition above, disconnect the test probes of SST (wire) from the battery and check the fuel leakage from the injector.

   SST 09842-30070

   Fuel drop: 1 drop or less per 12 minutes 

   Fig 7: Inspecting Leakage

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
2. Turn the ignition switch OFF.
3. Disconnect the negative (-) terminal cable from the battery.
4. Remove the SST and fuel tube connector.

   SST 09268-41047, 09842-30070

   CAUTION:

   • Perform disconnecting operations of the fuel tube connector (quick type) after observing the precautions (See PRECAUTION ).
   • As there is retained pressure in the fuel pipe line, prevent it from splashing inside the engine compartment.
5. Disconnect the TOYOTA hand- held tester from the DLC3.