Fuel Injector On-Vehicle Inspection
WARNING:
When performing the following procedure, be sure to observe Precautions on Fuel System Service and PRECAUTIONS FOR ENGINE
in order to reduce the risk of fire and personal injury.
- Using sound scope (1) or such, check operating sound of injector (2) when engine is running or cranking.
Cycle of operating sound should vary according to engine speed.
If no sound or an unusual sound is heard, check injector circuit (wire or connector) or injector.
- Disconnect connector (1) from injector, connect ohmmeter between terminals of injector and check resistance.
If resistance is out of reference value greatly, replace.
Reference resistance of fuel injector
12.0 Ω at 20 °C, 68 °F
- Connect connector to injector securely.