Engine Control System (SFI): Injector: Inspection

INSPECT INJECTOR INJECTION
CAUTION: Keep injector clear of sparks during the test.

Fig 1: Identifying Injector Components
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
1. Disconnect the fuel pipe clamp from the fuel tube connector.
  
  Fig 2: Disconnecting Fuel Pipe Clamp From Fuel Tube Connector
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
2. Disconnect the fuel inlet tube (fuel tube connector) from the fuel pipe.
  CAUTION:
  - Disconnect the fuel tube connector (quick type) observing the precaution (See SFI SYSTEM ).
  - As there is retained pressure in the fuel line, prevent if from splashing inside the engine compartment.
  Fig 3: Disconnecting Fuel Inlet Tube Connector From Fuel Pipe
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
3. Purchase a new fuel tube and remove the fuel tube connector from its pipe.
  Fuel tube: Part No. 23901-22070
  
  Fig 4: Identifying Fuel Tube Connector
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
4. Connect SST (hose) and fuel tube connector to the fuel pipe.
  SST 09268-1047
  
  CAUTION: Connect the fuel tube connector (quick type) observing the precautions (See SFI SYSTEM ).
  
  Fig 5: Connecting SST And Fuel Tube Connector To Fuel Pipe
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
5. Install the grommet and O-ring to the injector.
6. Connect SST (hose) to the injector.
  SST 09268-41047 (09268-41110, 09268-41300)
7. Put the injector into a graduated cylinder.
  CAUTION: Install a suitable vinyl hose onto the injector to prevent gasoline from splashing out.
  
  Fig 6: Connecting SST To Injector
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
8. Connect a hand-held tester to the DLC3.
  1. Connect the hand-held tester to the DLC3.
  2. Connect the battery negative (-) terminal cable to the battery.
  3. Turn the ignition switch ON, and push the hand-held tester main switch ON.
    NOTE: Do not start the engine.
  4. Select the following menu items: DIAGNOSIS/ENHANCED OBD II / ACTIVE TEST / FUEL PUMP / SPD.
  5. Please refer to the hand-held tester operator's manual for further details.
  If you have no hand-held tester, connect the positive (+) and negative (-) leads from the battery to the fuel pump connector (See FUEL PUMP ).
  
  Fig 7: Connecting Hand-Held Tester To DLC3
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
9. 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 09842-30080
  
  Injection volume:
  
  60 - 73 cm ³ (3.2 - 3.9 cu in.) per 15 sec.
  
  Difference between each injector:
  
  13 cm ³ (0.7 cu in.) or less
If the injection volume is not as specified, replace the injector.

Fig 8: Connecting SST To Injector And Battery
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
INSPECT LEAK
1. Under the condition above, disconnect the tester probes of SST (wire) from the battery and check the fuel leak from the injector.
  SST 09842-30080
  
  Fuel drop: 1 drop or less per 12 min.
2. Turn the ignition switch OFF.
3. Disconnect the negative (-) terminal cable from the battery.
  
  Fig 9: Checking Fuel Leak From Injector
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
4. Remove the SST and fuel tube connector.
  SST 09268-41047
5. Disconnect the hand-held tester from the DLC3.
6. Reconnect the fuel inlet tube (fuel tube connector).
  CAUTION: Connect the fuel tube connector (quick type) observing the precaution (See SFI SYSTEM ).
  
  Fig 10: Reconnecting Fuel Inlet Tube
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
7. Install the fuel pipe clamp to the fuel tube connector.
Fig 11: Installing Fuel Pipe Clamp To Fuel Tube Connector
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002