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

Using an ohmmeter, measure the resistance between the terminals.

Resistance: Approx. 13.8 Ω at 20 °C (68 °F) 

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

Fig 1: Inspecting Injector Resistance

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

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)

Fig 2: Connecting SST (Attachment And Hose) To Fuel Tube
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
3. Connect the fuel return hose, SST (union) and SST (hose) to the fuel pressure regulator.

   SST 09268-41047 (09268-41091)

4. Connect SST (hose) to the injector.

   SST 09268-41047

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

   HINT:

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

6. Connect a TOYOTA hand-held tester to the DLC3.
7. 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

   Fig 4: Connecting SST (Wire) To Injector And Battery

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   Volume: 56 - 69 cm ³  (3.4 - 4.2 cu in.) per 15 sec. 

   Difference between each injector: 

   1.3 cm ³  (0.08 cu in.) or less 

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

1. In the condition above, disconnect the tester 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 

2. Turn the ignition switch OFF.
3. Disconnect the negative (-) terminal cable from the battery.
   Fig 5: Inspecting Leakage

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
4. Remove the SST.

   SST 09268-41047, 09842-30070

5. Disconnect the TOYOTA hand-held tester from the DLC3.