Inspection

COOLING FAN SYSTEM
INSPECTION
1. INSPECT COOLING FAN RELAY





a. Check the continuity.
1. Using an ohmmeter, check for continuity between the terminals.





Standard

If the result is not as specified, replace the cooling fan relay.





b. Check the operation.
1. Apply battery positive voltage across terminals 1 and 2.
2. Using an ohmmeter, check that there is continuity between terminals 3 and 5.
If there is no continuity, replace the cooling fan relay.
2. INSPECT COOLING FAN RELAY NO.2





a. Check the continuity.
1. Using an ohmmeter, check for continuity between the terminals.





Standard

If the result is not as specified, replace the cooling fan relay.





b. Check the operation.
1. Apply battery positive voltage across terminals 1 and 2.
2. Using an ohmmeter, check that there is no continuity between terminals 3 and 4.
If there is continuity, replace the cooling fan relay.
3. Using an ohmmeter, check that there is continuity between terminals 3 and 5.
If there is no continuity, replace the cooling fan relay.
3. INSPECT COOLING FAN RELAY NO.3





a. Check the continuity.
1. Using an ohmmeter, check for continuity between the terminals.





Standard

If the result is not as specified, replace the cooling fan relay.





b. Check the operation.
1. Apply battery positive voltage across terminals 1 and 2.
2. Using an ohmmeter, check that there is continuity between terminals 3 and 5.
If there is no continuity, replace the cooling fan relay.





4. INSPECT TEMPERATURE DETECT SWITCH
a. Check the continuity.
1. Using an ohmmeter, check for continuity between the terminals.





Standard

If the result is not as specified, replace the temperature detect switch.





5. INSPECT TEMPERATURE DETECT SWITCH NO.2
a. Check the continuity.
1. Using an ohmmeter, check for continuity between the terminals.





Standard

If the result is not as specified, replace the temperature detect switch.