Fuel Injector: Inspection

INSPECT 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

Fig 1: Measuring Resistance Between Fuel Injector Connector Terminals

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

Inspect the injector injection.
CAUTION: Keep the injector away from sparks during the test.
1. Connect SST (fuel tube connector) to SST (hose) with SST (clip), and then connect them to the fuel pipe (vehicle side).
  SST 09268-31012 (09268-41500, 90467-13001,95336-08070)
  
  Fig 2: Connecting SST (Fuel Tube Connector) To SST (Hose)
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
2. Install a new O-ring to the fuel injector.
  SST 09268-31012 (09268-41110, 09268-41300, 90467-13001, 95336-08070), 09842-30080
3. Connect SST (adapter and hose) to the injector, and hold the injector and union with SST (clamp).
  
  Fig 3: Connecting SST (Adapter And Hose) To Injector
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
4. Install a vinyl tube onto the injector.
  CAUTION: Install a suitable vinyl tube onto the injector to contain any gasoline spray.
5. Put the injector into the graduated cylinder.
6. Operate the fuel pump.
7. 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:
  
  88 to 106 cm ³ (5.4 to 6.5 cu in.) per 15 seconds
  
  Standard difference between each injector:
  
  18 cm ³ (1.1 cu in.) or less
  
  Fig 4: Measuring Injection Volume Of Injector
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  
  If the result is not as specified, replace the fuel 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 per 20 minutes
  
  If fuel drop is not as specified, replace the fuel injector assembly.
  
  Fig 5: Checking For Fuel Drop
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002