- a) With the engine running or when turning it over with the starter, use a phonendoscope to check by ear (by the sound of injected fuel) in the performance of the injectors, making sure that the injection frequency is proportional to the engine crankshaft speed.
- b) If you don't have a phonendoscope, you can check the functionality of the injectors by touching them with your finger or a screwdriver.
If there is no sound or if it is unusual in nature, check the wiring, connector, injector, additional resistance of the injector, or the presence of a control signal from the electronic control unit.
2. Check the injector resistance. Disconnect the injector connector and measure the injector resistance using an ohmmeter. Nominal resistance at 20°C: 13.4-14.2 ohms.
The article was copied from the portal toyotaman.ru
If the resistance value is outside the specified range, replace the injector. Reconnect the injector connector.