Radiator Cooling Fan Motor: Testing and Inspection
ELECTRIC COOLING FANON-VEHICLE INSPECTION
1. CHECK COOLING FAN OPERATION WITH LOW TEMPERATURE (Below 83°C (181°F))
a. Turn the ignition switch ON.
b. Check that the cooling fans stop.
If not, check the cooling fan relays and ECT switches.
c. Disconnect the No. 1 ECT switch wire connector.
d. Connect terminals on the No. 1 ECT switch wire connector.
e. Check that the No. 1 cooling fan rotates at high speed.
If not, check the No. 1 cooling fan relay and No. 1 cooling fan.
f. Reconnect the No. 1 ECT switch connector.
g. Disconnect the No. 2 ECT switch connector.
h. Ground terminal on the No. 2 ECT switch wire harness side connector.
i. Check that the No. 1 and No. 2 cooling fans rotate at low speed.
If not, check the No. 2 cooling fan relay, No. 3 cooling fan relay and No. 2 cooling fan.
j. Reconnect the No. 2 ECT switch connector.
2. INSPECT NO.1 COOLING FAN
a. Disconnect the cooling fan connector.
b. Connect battery and ammeter to the cooling fan connector.
c. Check that the cooling fan rotates smoothly, and check the reading on the ammeter.
Standard amperage: 8.5 - 11.5 A at 20°C (68°F)
d. Reconnect the cooling fan connector.
3. INSPECT NO. 2 COOLING FAN
a. Disconnect the cooling fan connector.
b. Connect battery and ammeter to the cooling fan connector.
c. Check that the cooling fan rotates smoothly, and check the reading on the ammeter.
Standard amperage: 8.5 - 11.5 A at 20°C (68°F)
d. Reconnect the cooling fan connector.