Radiator Cooling Fan Relay Inspection

Disconnect negative (-) cable at battery.
Remove radiator cooling fan relay No. 1 (1), No. 2 (2) and/or No. 3 (3) from relay box.
Check radiator cooling fan relays as follows.
1. Check that there is no continuity between terminals "C" and "D". If there is continuity, replace relay.
2. Connect battery positive (+) terminal to terminal "B" of relay.
3. Connect battery negative (-) terminal to terminal "A" of relay.
4. Check continuity between terminals "C" and "D".
  If there is no continuity, replace relay.
  
  Fig 1: Inspecting Radiator Cooling Fan Relay
  Courtesy of SUZUKI OF AMERICA CORP.