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check engine light

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Old 05-20-2011, 08:40 PM
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Default check engine light

my check engine light is on because of the cooling fan relay, but i bought a new one and the check light is still on after reseting with computer, what gives?
Old 05-20-2011, 09:45 PM
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Did you check the diagnostic codes after you replaced the relay?
http://jeep-xj.info/HowtoECUcodes.htm
Old 05-20-2011, 11:25 PM
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yeah it still came up the same even after the new relay, i toggle switched the fan for now but i need to smog it.
Old 05-21-2011, 04:11 AM
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What was the code? The light may be indicating a general circuit trouble rather than a specific part.
Old 05-28-2011, 05:35 PM
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the code reads p1491 radiator fan relay control circuit. The cat and 02s icons are flashing, any more help?
Old 05-28-2011, 06:07 PM
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found this but its for a 99http://208.101.10.250/~naxjaor1/foru...hp?p=245310931
Old 05-28-2011, 06:12 PM
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is this the relay you changedhttp://www.allpar.com/forums/topic/89433-code-p1491/
Old 05-30-2011, 07:47 PM
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yeah its the one in the box not under the frame rail, but im going to try the fuse in the #10 spot that says not used
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