Fuel Injector: Testing and Inspection

1GR-FE FUEL: FUEL INJECTOR: INSPECTION

1. INSPECT FUEL INJECTOR ASSEMBLY

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

Standard Resistance:





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

2. INSPECT INJECTION VOLUME AND LEAKAGE

(a) Check the injector injection.





CAUTION:
* This test involves high-pressure fuel and electricity.
* Take every precaution regarding safe handling of both the fuel and the electrical parts.
* Perform this test in a safe area and avoid any sparks or flame.
* Do not smoke.
(1) Assemble SST as shown in the illustration.

SST : 09268-31012

09268-41091

09268-41120

09268-41140

09268-41310

09268-41500

90467-13001

95333-06030

95336-08070

Text in Illustration





(2) Discharge the fuel system pressure Removal.

(3) Disconnect the fuel inlet hose (fuel tube connector) from the fuel pipe.

(4) Remove the bolt and disconnect the fuel pressure regulator from the fuel delivery pipe.

NOTICE:
Do not disconnect the No. 2 fuel pipe from the fuel pressure regulator.

(5) Connect SST to the fuel pipe.





Text in Illustration





CAUTION:
Always read the precautions before connecting the fuel tube connector.

(6) Connect SST (hose) to the fuel inlet of the pressure regulator with another SST (union) and the 2 bolts.

SST : 09268-31012

09268-41091

95336-08070





Torque : 9.0 Nm (92 kgf-cm, 80 in-lbf)

Text in Illustration





(7) Connect the fuel return hose to the fuel outlet of the pressure regulator.

(8) Install a new O-ring to the injector.





Connect SST (adapter and hose) to the injector and hold the injector and adapter with SST (clamp).

SST : 09268-31012

09268-41140

09268-41310

90467-13001

95336-08070

Text in Illustration





Put the injector into a graduated cylinder.

CAUTION:
Install a suitable vinyl tube to the injector to contain any gasoline spray.

(11) Connect the Techstream to the DLC3.

(12) Turn the ignition switch to ON.

NOTICE:
Do not start the engine.

(13) Turn the Techstream on.

(14) Enter the following menus: Powertrain / Engine and ECT / Active Test / Activate the Fuel Pump Speed Control.

(15) Connect SST (wire) to the injector and the battery for 15 seconds, and measure the injection volume with a graduated cylinder. Test each injector 2 or 3 times.

SST : 09842-30080





Standard injection volume:

71 to 86 cm3 (4.3 to 5.2 cu. in.) per 15 seconds

Difference between each injector:

15 cm3 (0.9 cu. in.) or less

Text in Illustration





NOTICE:
Always turn the voltage on and off on the battery side, not the fuel pump side.

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

(b) Check for fuel leakage.

(1) In the condition above, disconnect the tester probes of SST (wire) from the battery and check for fuel leakage from the injector.

Standard fuel leakage:

1 drop or less per 12 minutes

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