Fuel Injector: Testing and Inspection

1GR-FE FUEL: FUEL INJECTOR: INSPECTION

INSPECTION

1. INSPECT FUEL INJECTOR ASSEMBLY





(a) Check the resistance.
(1) Using an ohmmeter, measure the resistance between the terminals.
Standard:





If the result is not as specified, replace the fuel injector.
(b) Check the injection volume.





NOTICE:
- Perform the test in a well-ventilated area and watch out for flames.
- Handle the fuel tube connector carefully.
(1) Prepare a new fuel tube.

HINT: Part No. 23801-31070




(2) Using a cutter knife, cut the fuel tube protector. Tear the protector by hand, then remove the fuel tube connector.

NOTE: If the protector is cut too deeply with the cutter, the O-ring of the fuel tube connector will be damaged.




(3) Install the fuel tube connector into SST (hose), then connect the tube connector to the fuel pipe.
SST: 09268-31012
95336-08070

CAUTION: Connect the fuel tube connector (quick type) after observing the precautions.

(4) Remove the pressure regulator Removal.
(5) Install the O-ring onto the fuel inlet of the pressure regulator.




(6) Connect SST (hose) to the fuel inlet of the pressure regulator with another SST (union) and the 2 bolts.
SST: 09268-31012
95336-08070
09268-41091
Torque: 7.5 Nm (80 kgf-cm, 66 in-lbf)
(7) Connect the fuel return hose to the fuel outlet of the pressure regulator.




(8) Install a new O-ring onto the injector.
(9) Connect SST (adaptor and hose) to the injector and hold the injector and union with SST (clamp).
SST: 09268-31012
95336-08070
09268-41140
09268-41400
(10) Set the injector in a graduated cylinder.

CAUTION: Install a suitable vinyl tube onto the injector to prevent gasoline splashes.

(11) Connect the Techstream to the DLC3.
(12) Turn the ignition switch to ON.
(13) Turn the Tester ON.
(14) Enter the following menus:
Select: Powertrain / Engine and ECT / Active Test / Control the Fuel Pump Speed / ON.
(15) Install SST onto the fuel injector.
SST: 09842-30080





(16) Connect SST to the battery, then measure the injection volume for 15 seconds. Perform the inspection 2 or 3 times, then calculate the average.
Standard::





NOTE: Always do the switching at the battery side.

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





(c) Check the fuel leakage.
(1) When checking the injection volume, remove SST from the battery. Inspect the fuel leakage from the fuel injector.
Standard:
1 drop or less every 12 minutes.
If the result is not as specified, replace the fuel injector.