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Separate circuits for high and low speed fans, Posted by walt [Email] (#2707) [Profile/Gallery] (more from walt) on Wed, 2 May 2012 06:09:38 In Reply to: Re: this tests relays, but I still would test at low speed, ACBC, Mon, 30 Apr 2012 04:57:50 Members do not see ads below this line. - Help Keep This Site Online - Signup |
and each circuit has its own relay and maxi-fuse. 40-amp fuse for low speed and 30-amp fuse for high speed per Haynes manual. So if jumper high speed relay, fan runs at high speed. Likewise, jumpering at low speed circuit should run fan on low speed. If you have a voltmeter or test light, should see battery voltage or a lit light at pin 30 relative to ground on both relays with other end of test circuit if each maxi-fuse is good. If you use resistance function on voltmeter and test fan resistor on fan shroud brace, you should see a very low resistance reading (1 ohm maybe) if resistor is good. If infinitely high resistance, then resistor replacement is needed. Earlier link repeated below tells how to do this.
posted by 72.49.19...
Radiator fan resistor replacement
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