Inspection of Electric Cooling Fan Components

1. Inspect water temperature switch

Location: On the water inlet housing.

(a) Using an ohmmeter, check that there is no continuity between the terminal and body when the coolant temperature is above 93°C (199°F).
(b) Check that there is continuity between the terminal and body when the coolant temperature is below 83°C (181°F).

If continuity is not as specified, replace the switch.

2. Inspect cooling fan relay ("FAN NO.1")






A. Inspect relay continuity
(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 continuity is not as specified, replace the relay.






B. Inspect relay operation
(a) Apply battery voltage across terminal 1 and 2.
(b) Using an ohmmeter, check that there is no continuity between terminals 3 and 4.

If operation is not as specified, replace the relay.

3. Inspect engine main relay
4. Inspect cooling fan motor






(a) Connect battery and ammeter to the fan motor connector.
(b) Check that the fan motor rotates smoothly, and check the reading on the ammeter.

Standard amperage:
3.2 - 4.4 A 2WD M/T
5.8 - 7.4 A 2WD A/T and 4WD M/T
8.8 - 10.8 A 4WD A/T