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cruise control not working, 2000 Cherokee Laredo

Printed From: the12volt.com
Forum Name: Cruise Controls
Forum Discription: Cruise Control Settings, Tach Signal, VSS PPM(Vehicle Speed Signal Pulses Per Mile), Vacuum, Brake, etc.
URL: https://www.the12volt.com/installbay/forum_posts.asp?tid=143382
Printed Date: May 27, 2022 at 4:48 PM


Topic: cruise control not working, 2000 Cherokee Laredo

Posted By: 1993cowboy
Subject: cruise control not working, 2000 Cherokee Laredo
Date Posted: July 20, 2017 at 12:27 AM

i am having issues with my girlfriends cruise control on her 2000 jeep grand Cherokee Laredo with the 4.0L. i have never had a issue figure something like this out in my 10years of being in a shop. i was wondering if someone might have any ideas of the issue. the cruise light turns on but it will not set. ive traced wires and cant find no brakes. on the info center it says the jeep has a open circuit i have ran a diagnostic on it several times. the first time i ran it it threw 10 codes. 4 of them was saying all four of the abs are failing. one code said the ecm had a internal malfunction. i cant remember the other 5 codes but the ecm one stood out. after i cleared the codes it never poped back up but i still have alot of issues including the open circuit code. can anyone give me any insight in the cruise issue or the issue with the open circuit. is it the ecm failing? in reality? thanks for you time

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CowBoy



Replies:

Posted By: i am an idiot
Date Posted: July 20, 2017 at 8:42 PM
The cruise control uses the pulses from the ABS to determine speed of the vehicle. If they are not working it can not control speed.





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