Fuel Injector: Inspection

Standard resistance: 

11.6 to 12.4 Ω at 20°C (68°F) 

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

Fig 1: Measuring Resistance Between Injector Terminals

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Keep the injector away from sparks during this test. 

1. Connect SST (fuel tube connector) to SST (hose), then connect them to the fuel pipe (vehicle side).

   SST 09268-31011 (09268-41500, 90467-13001, 95336-08070) 

   Fig 2: Identifying SST (Fuel Tube Connector) And SST (Hose)

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
2. Install the O-ring to the fuel injector.
3. Connect SST (adapter and hose) to the injector, and hold the injector and union with SST (clamp).

   SST 09268-31011 (09268-41110, 09268-41300, 90467-13001) 

   Fig 3: Connecting SST (Adapter And Hose) To Injector

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
4. Put the injector into the graduated cylinder.
   CAUTION: Install a suitable vinyl tube onto the injector to contain gasoline spray.
5. Operate the fuel pump.
6. Connect SST (wire) to the injector and the battery for 15 seconds, and measure the injection volume with the graduated cylinder. Test each injector 2 or 3 times.

   SST 09842-30080 

   Standard injection volume: 

   76 to 92 cm ³  (4.6 to 5.6 cu in.) per 15 seconds 

   Standard difference between each injector: 

   16 cm ³  (0.98 cu in.) or less 

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

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Fig 5: Checking Injector For Fuel Leakage

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

1. Disconnect the SST (wire) tester probes from the battery and check the fuel leakage from the injector.

   Standard fuel drop: 

   1 drop or less per 12 minutes 

2. Turn the ignition switch off.
3. Disconnect the cable from the negative (-) battery terminal.
4. Remove the SST.
5. Disconnect the Techstream from the DLC3.
6. Reconnect the fuel inlet hose (rear fuel pipe) to the fuel main tube.