Engine Control System (SFI): Injector: Inspection

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

Fig 1: Inspecting Injector
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
1. Prepare a new fuel tube and remove the fuel tube connector from the pipe.
  Part No. 23901-22010
  
  Fig 2: Identifying Fuel Tube Connector
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
2. Connect SST (hose) and fuel tube connector to the fuel pipe.
  SST 09268-41047
  
  CAUTION: Perform connecting operations of the fuel tube connector (quick type) after observing the precautions.
  
  Fig 3: Connecting SST (Hose) And Fuel Tube Connector To Fuel Pipe
  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 to prevent gasoline from splashing out.
  SST 09268-41047
5. Insert the injector into a graduated cylinder.
  NOTE: Install a suitable vinyl tube onto the injector to prevent gasoline from splashing out.
  
  Fig 4: Installing A Suitable Vinyl Tube Onto Injector
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
6. Connect the TOYOTA hand-held tester to the DLC3.
7. Turn the ignition switch ON and the TOYOTA hand-held tester main switch ON.
  NOTE: Do not start the engine.
8. Select the active test mode on the TOYOTA hand-held tester.
9. 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 do not have a TOYOTA hand-held tester, connect the positive (+) and negative (-) leads from the battery to the fuel pump connector.
  (See INJECTOR )
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 09842-30080
  
  Volume:
  
  47 - 58 cm3 (2.7 - 3.3 cu in.) per 15 sec.
  
  Difference between each injector: 10 cm3 (0.6 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
INSPECT LEAKAGE
1. In the condition above, disconnect the test probes of SST (wire) from the battery and check the fuel leakage from the injector.
  SST 09842-30080
  
  Fuel drop:
  
  1 drop or less per 12 minutes
2. Turn the ignition switch to LOCK.
3. Disconnect the negative (-) terminal cable from the battery.
4. Remove the SST and fuel tube connector.
  SST 09268-41047
  CAUTION:
  - Perform disconnection of the fuel tube connector (quick type) after observing the precautions.
  - 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.
Fig 7: Inspecting Leakage
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002