Sienna LE V6-3.0L (1MZ-FE) (1998)
Radiator Cooling Fan Motor Relay: Testing and Inspection
Cooling Fan Relay
1. INSPECT NO.1 COOLING FAN RELAY
a. Remove the No.1 cooling fan relay. (Marking: FAN NO.1)
b. Inspect the No.1 cooling fan relay continuity.
1) Using an ohmmeter, check that there is continuity between terminals 1 and 2.
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If there is no continuity, replace the relay.
2) Check that there is continuity between terminals 3 and 4.
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If there is no continuity, replace the relay.
c. Inspect the No.1 cooling fan relay operation.
1) Apply battery voltage across terminals 1 and 2.
2) Using an ohmmeter, check that there is no continuity between terminals 3 and 4.
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If there is continuity, replace the relay.
d. Install the No.1 cooling fan relay.
2. INSPECT NO.2 COOLING FAN RELAY