Sienna LE V6-3.0L (1MZ-FE) (1998)
Radiator Cooling Fan Motor Relay: Testing and Inspection
Engine Main Relay
INSPECTION
1. REMOVE ENGINE MAIN RELAY (Marking: ENGINE MAIN)
2. INSPECT RELAY CONTINUITY
a. Using an ohmmeter, check that there is continuity between terminals 3 and 5.
-
If there is no continuity, replace the relay.
b. Check that there is continuity between terminals 2 and 4.
-
If there is no continuity, replace the relay.
c. Check that there is no continuity between terminals 1 and 2.
-
If there is continuity, replace the relay.
3. INSPECT RELAY OPERATION
a. Apply battery voltage across terminals 3 and 5.
b. Using an ohmmeter, check that there is no continuity between terminals 2 and 4.
-
If there is continuity, replace the relay.
c. Check that there is continuity between terminals 1 and 2.
-
If there is no continuity, replace the relay.
4. REINSTALL ENGINE MAIN RELAY