Fuel System: Inspection

1. Check the resistance.
   1. Using an ohmmeter, measure the resistance between the terminals.

   Standard: 

   TESTER CONNECTION AND SPECIFIED CONDITION SPECIFICATION
   
   

   Tester Connection	Specified Condition
   1-2	11.6 to 12.4 Ω at 20°C(68°F)

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

   Fig 1: Identifying Connector Terminal

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
2. Check the injection volume.
   NOTE:

   • Perform the test in a well-ventilated area and watch out for flames.
   • Handle the fuel tube connector carefully.
   1. Prepare a new fuel tube.

      HINT:

      ENGINE TYPE AND PART NO SPECIFICATION
      
      

      Engine Type	Part No.
      1ZZ-FE	23901-OD040
      2ZZ-GE	23271-22010

      Fig 2: Cutting Protector Of Fuel Tube Protector

      Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
   2. Using a cutter knife, cut the protector of the fuel tube protector as illustrated. Tear the protector by hand, then remove the fuel tube connector.
      NOTE: If the protector is cut too deeply using the cutter, the O-ring of the fuel tube connector will be damaged.
   3. Install the fuel tube connector into SST, then connect the fuel tube connect to the fuel pipe (the vehicle side).

      SST 09268-1047 95336-08070

      CAUTION: Connect the fuel tube connector (quick type) in accordance with the precautions.
      Fig 3: Installing Fuel Tube Connector Into SST And Connecting Fuel Tube Connect To Fuel Pipe

      Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
   4. Install a new O-ring onto the fuel injector.
   5. Install SST and the vinyl tube onto the fuel injector.

      SST 09268-41047 (09268-41110, 09268-41300, 95336-08070)

      Fig 4: Installing SST And Vinyl Tube Onto Fuel Injector

      Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
   6. Set the fuel injector in a graduated cylinder.

      HINT:

      Install a suitable vinyl tube onto the injector to prevent gasoline splashes.

   7. Actuate the fuel pump. (See ON-VEHICLE INSPECTION )
   8. Install SST onto the fuel injector.

      SST 09842-30080

   9. Connect SST to the battery, then measure the injection volume for 15 seconds. Perform the inspection 2 or 3 times, then calculate the average.
   Fig 5: Installing SST Onto Fuel Injector

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   Standard: 

   1ZZ-FE: 

   INJECTION VOLUME AND DIFFERENCE BETWEEN EACH FUEL INJECTOR SPECIFICATION
   
   

   Injection Volume	Difference between each fuel injector
   60 to 73 cm3 (3.6 to 4.5 cu in.) per 15 seconds	13 cm3 (0.8 cum.) or less

   2ZZ-GE: 

   INJECTION VOLUME AND DIFFERENCE BETWEEN EACH FUEL INJECTOR SPECIFICATION
   
   

   Injection Volume	Difference between each fuel injector
   77 to 94 cm3 (4.7 to 5.7 cu in.) per 15 seconds	17 cm3 (1.0 cu in.) or less

   NOTE: Always do the switching at the battery side.

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

3. Check the leakage.
   1. When inspecting the injection volume, remove SST from the battery.

Standard: 1 drop or less every 12 minutes 

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

Fig 6: Checking Leakage

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

1. Check resistance.
   1. Using an ohmmeter, measure the resistance between the terminals.

   Standard: 

   TESTER CONNECTION AND SPECIFIED CONDITION SPECIFICATION
   
   

   Tester Connection	Specified Condition
   1-2	0.2 to 3.0 Ω at 20°C (68°F)

   If the result is not as specified, replace the fuel pump.

2. Check the operation
   1. Apply battery voltage to both terminals. Check that the pump operates.
   Fig 7: Identifying Connector Terminal

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
   NOTE:

   • These tests must be done quickly (for less than 10 seconds) to prevent the coil burnout.
   • Keep the fuel pump as far away from the battery as possible.
   • Always do the switching at the battery side.

   If the motor does not operate, replace the fuel pump.