Fuel Injector: Inspection: Inspection

INSPECT FUEL INJECTOR ASSEMBLY

Fig 1: Measuring Resistance Value

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Check the resistance.

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

Standard resistance

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 fuel injector.

Check the operation.
WARNING:
Perform the inspection in a well-ventilated area.

Do not perform the inspection near any flames.
1. Connect SST (fuel tube connector) to SST (hose), then connect them to the fuel pipe (vehicle side).
  
  Fig 2: Connecting SST (Fuel Tube Connector) To SST (Hose)
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  - SST: 09268-41048
    - 90467-13001
    - 95336-08070
    - 09268-41500
2. Install the O-ring onto the fuel injector.
3. Connect SST (adapter and hose) to the fuel injector, and hold the fuel injector and union with SST (clamp).
  
  Fig 3: Identifying Connection Of Fuel Injector
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  - SST: 09268-41048
    - 09268-41110
    - 90467-13001
    - 95336-08070
    - 09268-41310
4. Set the fuel injector in a graduated cylinder.
  WARNING:
  Install a suitable vinyl tube onto the injector assembly to prevent gasoline splashes.
5. Operate the fuel pump. Refer to ON-VEHICLE INSPECTION - Step 1 .
6. Connect SST (wire) to the fuel injector and the battery for 15 seconds, and measure the injection volume with the graduated cylinder. Test each injector 2 or 3 times.
  
  Fig 4: Connecting SST To Battery
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  - SST: 09842-30080
  Injection volume
  
  60 to 73 cm³ (3.7 to 4.5 cu in.) every 15 seconds
  
  Difference between each injector
  
  13 cm³ (0.8 cu in.) or less
  
  NOTE:
  Always do the switching at the battery side.
  
  If the injection volume is not as specified, replace the fuel injector.
Check the leakage.

Fig 5: Checking Injector For Fuel Leakage
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
1. In the condition above, disconnect the test probes of SST (wire) from the battery and check the fuel leakage from the fuel injector.
  Fuel drop
  
  1 drop or less every 12 minutes