Radiator Cooling Fan Motor Relay: Testing and Inspection

Fig. 22 Relay Terminal Identification:

1. Unplug relay and check for continuity between relay terminals, Fig. 22.
2. Continuity should exist between terminals C and D, and continuity should not exist between terminals A and B.
3. Apply battery voltage to terminal C and ground terminal D, continuity should now exist between terminals A and B.
4. If relay does not operate as specified, replace relay.