SFTE/SFI System 2JZ-GTE — Injector On-Vehicle Inspection, page 16

ENGINE  –  SFI SYSTEM (2JZ–GTE)

EG–273

INJECTOR
ON–VEHICLE INSPECTION

1.    INSPECT INJECTOR OPERATION
      Check operation sound from each injector.
(a)  With the engine running or cranking, use a sound scope to
      check that there is normal operating noise in proportion to
      engine speed.

Sound Scope

P11358

(b)  If you have no sound scope, you can check the injector
      transmission operation with your finger.
      If no sound is heard or unusual vibration is felt, check the wir-
      ing connector, injector or injection signal from the ECM.

P11359

Ohmmeter

P11415

2.    INSPECT INJECTOR RESISTANCE
(a)  Disconnect the throttle body without disconnecting the water
      bypass hoses from the air intake chamber.
      (See throttle body removal)
(b)  Disconnect the 6 injector connectors.
(c)  Using an ohmmeter, measure the resistance between the in-
      jector terminals.
      Resistance:
            At 20˚C (68˚F) Approx. 1.95 Ω
      If the resistance is not as specified, replace the injector.
(d)  Reconnect the 6 injector connectors.
(e)  Reinstall the throttle body to the air intake chamber.
      (See throttle body installation)