How do you check fuel injectors on Toyota Echo?

To check the fuel injectors on a Toyota Echo, start by ensuring the engine is off and cool. Disconnect the fuel injector connector and use a multimeter to test the resistance across the injector terminals; typically, you should see a resistance of around 12-16 ohms. Additionally, you can perform a visual inspection for any signs of leaks or damage. For further testing, you may need to use a noid light to check for proper signal activation when the engine is cranked.