On Vehicle Inspection

1. INSPECT INJECTOR OPERATION Check operation sound from each injector.





- With the engine running or cranking, use a sound scope to check that there is normal operating noise in proportion to engine speed.





- If you have no sound scope, you can check the injector transmission operation with your finger.
- If no sound or an unusual sound is heard, check the wiring connector, injector or injection signal from the ECM.





2. INSPECT INJECTOR RESISTANCE.
- Remove the throttle body and intake air connector assembly.


- Disconnect the injector connectors.
- Using an ohmmeter, measure the resistance between the terminals.

Resistance: At 2O°C (68°F): 13.4 - 14.2 Ohms

- If the resistance is not as specified, replace the injector.
- Reconnect the injector connectors.
- Reinstall the throttle body and intake air connector assembly.