Corolla Wagon L4-107.5 1762cc 1.8L DOHC (7A-FE) (1993)
Fuel Injector: Testing and Inspection
Component Test
Checking Injector Operation
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 rpm.
Checking Injector Operation
- If you have no sound scope, you can check the injector transmission operation with your finger.
- If no sound or unusual sound is heard, check the wiring connector, injector or injection signal from the engine ECU.
Inspect Injector Resistance
- Disconnect the injector connector.
- Using an ohmmeter, measure the resistance between the terminals.
Resistance: Approx. 13.8 ohms
- If the resistance is not as specified, replace the injector.
- Reconnect the injector connector.