Radiator Cooling Fan Motor Relay: Testing and Inspection

Cooling Fan Relay 1-2:

Check for continuity between terminals 3 and 4.
With 12 Volt DC supply between terminals 1 and 2 -- Continuity
With NO 12 Volt DC supply between terminals 1 and 2 -- NO Continuity

NOTE: For information on testing cooling fan control circuits, refer to Computers and Control Systems - Testing and Inspection - Non-trouble code charts.