Radiator fan not working

Tiny
STONE228
  • MEMBER
  • SUZUKI
I have a 1990 susuki swift GTI, its a 1.3L DOHC engine, and its has about 160 000 miles. The radiator fan is not turning on, I recently bought the car and the person who had it before had it wired oddly with an on and off switch? But I tried connecting everything back up and it still doesn't work. It looks like its wired to the horn, which doesn't work either, and I tried just connecting the fan right to the battery and the fan does work. I also checked the fuses, and they are good as well. I don't know where to go from here?
Sunday, September 2nd, 2007 AT 2:15 PM

1 Reply

Tiny
DAVE H
  • MECHANIC
  • 13,384 POSTS
Cooling Fan Relay
If voltage is not present at fan relay Blue wire, repair Blue wire between cooling fan thermoswitch and cooling fan relay. If voltage is present at fan relay terminal Blue wire, check relay terminal No. 3 (Black wire) to ensure ground is present. If ground is not present at Black wire, repair Black wire. If ground is present, go to next step.
Check for voltage at fan relay connector terminal No. 2 (White/Blue), if voltage is not present, check fuse link "B" and in-line fuse under dash (next to junction box). If voltage is present at fan relay terminal No. 2, check for continuity between fan relay terminal No. 4 (Blue/Red wire) and fan motor connector. If continuity does not exist, repair Blue/Red wire. If continuity does exist, replace fan relay.
Cooling Fan Thermoswitch
Remove thermoswitch from vehicle. Using ohmmeter, ensure continuity is correct between wire connector and thermoswitch body at indicated temperatures. Thermoswitch may be gradually heated in water for testing.
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Sunday, May 30th, 2010 AT 5:08 AM

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