Fuel Injector: Inspection

INSPECT FUEL INJECTOR ASSEMBLY

Measure the resistance according to the value(s) in the table below.

Fig 1: Identifying Fuel Injector Connector End View

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Standard Resistance

RESISTANCE SPECIFICATION

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

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

Inspect the injection volume.
CAUTION: This test involves high-pressure fuel and electricity. Take all precautions regarding safe handling of both the fuel and the electricity. Perform this test in a safe area, and avoid any sparks or flames. Do not smoke.
1. Remove the fuel pipe clamp.
  
  Fig 2: Identifying Fuel Pipe Clamp
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
2. Disconnect the fuel tube.
  
  Fig 3: Disconnecting Fuel Tube
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
3. Connect SST to the fuel pipe (the vehicle side).
  
  Fig 4: Identifying Fuel Pipe And Fuel Tube Connector
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
4. Install the O-ring to the fuel injector.
5. Install SST and the tube to the fuel injector.
  SST 09268-31012 (09268-41300, 09268-41500, 09268-41600, 90467-13001, 95336-08070)
  
  Fig 5: Installing SST And Tube To Fuel Injector
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
6. Put the injector into a graduated cylinder.
  CAUTION: Install a strong rubber tube onto the injector to prevent gasoline from splashing.
  
  Fig 6: Connecting SST (Wire) To Injector And Battery
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
7. Operate the fuel pump (turn the engine switch on (IG)).
8. 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 09842-30090
  
  Standard injection volume:
  
  83 to 99 cm ³ (5.0 to 6.0 cu in.) per 15 seconds
  
  Difference between each injector:
  
  16 cm ³ (1.0 cu in.) or less
  
  If the injection volume is not as specified, replace the injector assembly.
Check for fuel drop.
1. In the condition above, disconnect the tester probes of SST (wire) from the battery and check for fuel drop from the injector.
  Standard fuel drop:
  
  1 drop or less in 12 minutes
  
  If the fuel drop is not as specified, replace the injector assembly.
  
  Fig 7: Checking Fuel Drop From Injector
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002