Matrix XR 2WD L4-1.8L (1ZZ-FE) (2003)
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Radiator Cooling Fan Motor: Testing and Inspection
Component 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.
2. COOLING FAN RELAY NO.2
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
Using an ohmmeter, check that there is continuity between terminals 3 and 4.
If there is no continuity, replace the relay.
3
Check that there is no continuity between terminals 3 and 5.
If there is continuity, replace the relay.
4
Apply battery voltage across terminals 1 and 2.
5
Using an ohmmeter, check that there is continuity between terminals 3 and 5.
If there is no continuity, replace the relay.
3. COOLING FAN RESISTOR
a. Using an ohmmeter, measure the resistance between the terminals.
Resistance: 1.17 - 1.43 Ohms at 20°C (68°F)