Corolla Sedan 4-Door L4-1587cc 1.6L DOHC MFI (1997)
Radiator Cooling Fan Motor Relay: Testing and Inspection
Nippondenso Relay
1. Remove No. 1 cooling fan relay.
2. Inspect No. 1 cooling fan relay.
3. Inspect relay continuity as follows:
a. Using an ohmmeter, check that there is continuity between terminals 1 and 2.
b. Check that there is continuity between terminals 3 and 4. If there is no continuity, replace the relay.
4. Inspect relay operation as follows:
a. Apply battery voltage across terminals 1 and 2.
b. Using an ohmmeter, check that there is no continuity between terminals 3 and 4 If there is continuity, replace the relay.
5. Reinstall No. 1 cooling fan relay.
