FUEL INJECTOR (for Port Injection): Inspection

INSPECT FUEL INJECTOR ASSEMBLY

Measure the resistance of the fuel injector assembly.

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

Standard Resistance

RESISTANCE SPECIFICATION

Tester Connection	Condition	Specified Condition
1 - 2	20°C (68°F)	11.6 to 12 4 Ω

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

Inspect the injection volume
CAUTION: This test involves high-pressure fuel and electricity. Take all precautions regarding safe handling of both fuel and electricity. Perform this test in a safe area, and avoid any sparks or flames. Do not smoke.

Fig 1: Identifying Fuel Injector Terminals
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
1. Remove the fuel pipe clamp
  
  Fig 2: Locating 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)
  SST 09268-31012 (09268-41500, 90467-13001, 95336-08070)
4. Install the O-ring to the fuel injector assembly.
  
  Fig 4: Identifying Fuel Pipe, SST (Hose) And Fuel Tube Connector
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
5. Install SST and tube to the fuel injector assembly
  SST 09268-31012 (09268-41160, 09268-41300, 90467-13001)
  
  Fig 5: Identifying Clip, Adapter, Tube And Clamp
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
6. Put the fuel injector assembly into a graduated cylinder
  CAUTION: Install a strong rubber tube onto the fuel injector assembly to prevent gasoline from splashing.
  
  Fig 6: Connecting SST (Wire) To Fuel Injector Assembly 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 fuel injector assembly and the battery for 15 seconds, and measure the injection volume with the graduated cylinder Test each fuel injector assembly 2 or 3 times.
  SST 09842-30090
  
  Standard injection volume: 72.3 to 75.2 cm ³ (4.4 to 4.6 cu in.) per 15 seconds
  
  Difference between each fuel injector assembly: 18 cm ³ (1.1 cu in.) or less
  
  If the injection volume is not as specified, replace the fuel injector assembly
Check for leaks
1. In the condition above, disconnect the tester probes of SST (wire) from the battery and check for fuel leakage from the fuel injector assembly
  Standard fuel drop: 1 drop or less in 24 minutes
  
  Fig 7: Checking Fuel Injector For Leaks
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002