SFI System (5VZ-FE): Injector: Inspection

INSPECT INJECTOR RESISTANCE
Using an ohmmeter, measure the resistance between the terminals.

Resistance: 13.4 - 14.2 Ω at 20°C (68°F)

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

Fig 1: Measuring Resistance Between Terminals
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
INSPECT INJECTOR INJECTION
CAUTION: Keep injector clear of sparks during the test.
1. Disconnect the fuel inlet pipe from the fuel tube.
2. Connect SST (attachment and hose) to the fuel tube.
  SST 09268-41047 (09268-52011)
3. Connect the fuel return hose, SST (union) and SST (hose) to the fuel pressure regulator.
  SST 09268-41047 (09268-41091)
  
  Fig 2: Disconnecting Fuel Inlet Pipe From Fuel Tube
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
4. Install the O-ring to the injector.
5. Connect SST (union and hose) to the injector, and hold the injector and union with SST (clamp).
  SST 09268-41047
6. Put the injector into the graduated cylinder.
  HINT:
  
  Install a suitable vinyl tube onto the injector to prevent gasoline from splashing out.
  
  Fig 3: Installing Vinyl Tube Onto Injector
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
7. Connect a hand-held tester to the DLC3.
8. Connect the battery negative (-) cable to the battery.
9. Turn the ignition switch ON, and push the hand-held tester main switch ON.
  NOTE: Do not start the engine.
10. Select the ACTIVE TEST mode on the hand-held tester.
11. Please refer to the hand-held tester operator's manual for further details.
  
  Fig 4: Connecting Hand-Held Tester To DLC3
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
12. 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: 56 - 69 cm ³ (3.4 - 4.3 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 5: Connecting SST (Wire) To Injector And Battery
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 09842-30070
  
  Fuel drop: 1 drop or less per 12 min.
2. Turn the ignition switch OFF.
3. Disconnect the negative (-) terminal cable from the battery.
4. Remove the SST.
  SST 09268-41047
5. Disconnect the hand-held tester from the DLC3.
Fig 6: Checking Fuel Leakage From Injector
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002