Corolla S Sedan L4-1.8L (1ZZ-FE) (2002)
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Radiator Cooling Fan Motor Relay: Testing and Inspection
Engine Main Relay
INSPECTION
1. REMOVE RELAY BOX COVER
2. REMOVE ENGINE MAIN RELAY (Marking: ENGINE MAIN)
3. INSPECT ENGINE MAIN RELAY
a. Inspect the relay continuity.
1) Using an ohmmeter, check that there is continuity between terminals 3 and 5.
If there is no continuity, replace the relay.
2) Check that there is continuity between terminals 2 and 4.
If there is no continuity, replace the relay.
3) Check that there is no continuity between terminals 1 and 2.
If there is continuity, replace the relay.
b. Inspect the relay operation.
1) Apply battery positive voltage across terminals 3 and 5.
2) Using an ohmmeter, check that there is no continuity between terminals 2 and 4.
If there is continuity, replace the relay.
3) Check that there is continuity between terminals 1 and 2.
If there is no continuity, replace the relay.
4. REINSTALL ENGINE MAIN RELAY
5. REINSTALL RELAY BOX COVER COOLING FAN RELAY
