Highlander 4WD V6-3.0L (1MZ-FE) (2003)
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Radiator Cooling Fan Motor Relay: Testing and Inspection
INSPECTION
1. COOLING FAN RELAY
a. Inspect the cooling fan relay continuity.
1
Using an ohmmeter, check that there is continuity between terminals 1 and 2.
If there is no continuity, replace the relay.
2
Check that there is no continuity between terminals 3 and 5.
If there is continuity, replace the relay.
3
Apply battery voltage across terminals 1 and 2.
4
Using an ohmmeter, check that there is continuity between terminals 3 and 5.
If there is no continuity, replace the relay.
