EG–202 ENGINE – SFI SYSTEM (2JZ–GE) 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 P02181 (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. P02124 2. INSPECT INJECTOR RESISTANCE (a) Remove the throttle body together with the intake air connector. (See steps 1 to 9 in injector removal) (b) Disconnect the 6 injector connectors. (c) Using an ohmmeter, measure the resistance between the injector terminals. Resistance: At 20°C (68°F) 13.4–14.2 Ω If the resistance is not as specified, replace the injector. (d) Reconnect the 6 injector connectors. (e) Reinstall the throttle body together with the intake air connector. (See steps 8 to 16 in injector installation) Ohmmeter P10900