Corolla S Sedan L4-1794cc 1.8L DOHC MFI (2001)
Fuel Injector: Testing and Inspection
On-Vehicle Inspection
ON-VEHICLE INSPECTION
1. REMOVE NO.2 CYLINDER HEAD COVER
Remove the 2 nuts, 2 clips and No.2 cylinder head cover.
2. CHECK OPERATION SOUND FROM EACH INJECTOR
a. With the engine running or cranking, use a sound scope to check that there is normal operating noise in proportion to engine speed.
b. 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 signal from the ECM.
3. INSPECT INJECTOR RESISTANCE
a. Disconnect the injector connector.
b. Using an ohmmeter, measure the resistance between the terminals.
Resistance: 13.4 - 14.2 Ohms at 20 °C (68 °F)
If the resistance is not as specified, replace the injector.
c. Reconnect the injector connector.
4. REINSTALL NO.2 CYLINDER HEAD COVER
Install the No.2 cylinder head cover with 2 nuts and 2 clips.