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Discussion Starter #1
P1491 radiator fan relay circuit - would air A/C system low on 134 freon cause
fan not to come on and get check engine lite. checked fuse and relay ran fan off battery with jumpers , fan ran normal. Any other place to start looking.
 

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Discussion Starter #3
replaced relay, fuse and removed fan, all check normal going to try servicing A/C system - lite comes on when switch to A/C gets code P1491
 

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Discussion Starter #4
After looking and testing system found aux relay missing, replaced relay system and codes went away.
 

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does anybody know where the radiator fan relay switch can be found on a 2001 Jeep Grand Ch. Laredo and how to get to it?
 
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