Question about 1996 Jeep Grand Cherokee

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The info center (below the a/c controls)is not working no lights at all, swapt with known good unit no help.

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  • John Shanahan Jan 30, 2010

    All the fuses are OK and I find 12v on the black/wht wire at the connector. I do not know if that is the right wire or not. I have a Chilton book on the Jeep but, the schematics leave a lot to be desired. I can not find the info unit on any of the schematics. It is mentions in the book but, nothing about the wirering.


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I know this may sound stupid but have you check the fuses? very common thing to be over looked. if so you will need to test for power and ground at the harness going to the heater/ac control unit that is not working. you will need to test it with a multimeter while it is still plugged in and back probe the connectors cavity's where the wires sit in.

first is the 12v switched power it is in the "c" connector # 12 position and it is dark green and pink it should have 12vdc when key is on c, then the constant power 12vdc is the 13 position and the color is white with red. then the ground and that is connector d and the #7 position and it is a pink wire. there is one other you should check but if it is not working then it will not test but it is in the c connector in # 8 and it is brown with white and it should have 5vdc.

let me know how you make out. if you have power or not.

Posted on Jan 31, 2010

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Have u checked all fuses and breakers if so then check for 12 volts at the connection. if no volts check for in line fuse on harness.

Posted on Jan 30, 2010

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