Cruise Control doesn't work?

2003 CADILLAC DEVILLE
131,000 MILES • 4.6L • V8 • FWD • AUTOMATIC
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CADIEMAN
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good night
Oct 26, 2020 at 12:27 PM (Merged)
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SEAN03
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Ok thanks I will do this tomorrow and let you know what happens. Thanks for the help today.
Oct 26, 2020 at 12:27 PM (Merged)
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SEAN03
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Ok so when I turned on the cruise it came up with e.7.0 then when I hit the brake and did the other things it said e.0.0 and it kept flashing back and fourth from e.7.0 to e.0.0
Oct 26, 2020 at 12:27 PM (Merged)
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SEAN03
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Hi I am reporting this message again. Ok so when I turned on the cruise it came up with e.7.0 then when I hit the brake and did the other things it said e.0.0 and it kept flashing back and fourth from e.7.0 to e.0.0.
Oct 26, 2020 at 12:27 PM (Merged)
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CADIEMAN
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what did do when u hit set button and the resume buttons
Oct 26, 2020 at 12:27 PM (Merged)
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SEAN03
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It just flashed to E.0.0 when I did it then it would switch back to E.7.0 real quick.
Oct 26, 2020 at 12:27 PM (Merged)
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CADIEMAN
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if the orange light isnt on the handle.you cant be getting voltage to the lever.is the lever new?
Oct 26, 2020 at 12:27 PM (Merged)
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SEAN03
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I went to the junk yard and got one that worked. They told me it worked. I also have the original. I switched it to the lever I got in the junkyard. But I switched it back to the old one that is the original.
Oct 26, 2020 at 12:27 PM (Merged)
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CADIEMAN
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if u are sure their is voltage to the pink wire test the other side of the connector if power is good on both sides of the connector and the orange light doesnt light when you turn the cruise switch on youll need to buy a good lever. gl
Oct 26, 2020 at 12:27 PM (Merged)
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SEAN03
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Which wires would I check for voltage color wise.
Oct 26, 2020 at 12:27 PM (Merged)
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CADIEMAN
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pop the lever connector out in your pics. and test the pink wire for voltage on both sides of the connector. with a test light then u will need to ck the ground next stick a paper clip in the connector on the pink wire then put the test lights clip to it.then probe the black wire at connector.if it lights the ground is good.start here all testing should be done with the key turned on and not started
Oct 26, 2020 at 12:27 PM (Merged)
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SEAN03
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Hey I got a multimeter. Do I need to buy a tast light instead. Thanks.
Oct 26, 2020 at 12:27 PM (Merged)
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SEAN03
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I seen you posted to me but I cant see what you put. So I am reposting the question. I got a multimeter. Do I need to buy a test light instead. Thanks.
Oct 26, 2020 at 12:27 PM (Merged)
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CADIEMAN
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key on test for voltage on the pink wire.put the neg.on the black wire and pos.on the pink does it have over 12volts on the meter?
Oct 26, 2020 at 12:27 PM (Merged)
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SEAN03
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Their is 12.2 volts going to the pink and black wire.
Oct 26, 2020 at 12:27 PM (Merged)
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SEAN03
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Hey their is 12.2 volts going to the pink wire
Oct 26, 2020 at 12:27 PM (Merged)
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KHLOW2008
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That means you have battery voltage. Turn switch on and test the Grey wire for battery voltage.
Oct 26, 2020 at 12:27 PM (Merged)
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SEAN03
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Ok. I tested it I put the positive wire on the grey and put the negative on the black wire. It read 0.00 voltage. I also put the red volt meter wire on the grey and it still showed 0.00
Oct 26, 2020 at 12:27 PM (Merged)
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CADIEMAN
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did u check for voltage on both sides because if power is going through the connector to the lever and the yellow light doesnt light then the lever is faulty.i dont know why your not setting codes 60 to 67 to help u diagnosis the system.
Oct 26, 2020 at 12:27 PM (Merged)
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KHLOW2008
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No, you don't test this way. The other probe should be grounded to body, not the black wire.
Oct 26, 2020 at 12:27 PM (Merged)
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CADIEMAN
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i was testing the ground to the switch and voltage at the same time khlow.
Oct 26, 2020 at 12:27 PM (Merged)
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SEAN03
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ok so I did what khlow and what cadieman said. I grounded one probe to the bady the grey wire came up with 0.01v. I put everything back together. I tested both sides like you said and their was power. I also hooked the two connectors and it was 12 volts on one side and 0.01 on the other and I flipped the connector on the other side and it wasthe same. so their is voltage going to the connector I would assume.
Oct 26, 2020 at 12:27 PM (Merged)
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CADIEMAN
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i know there is voltage coming to the connector because your reading voltage from the pink and black wires.this tests the voltage on the pink and it tests the ground to be good.just test the opposite side of the connector the same.look like blue and yellow and black stripe.do u read voltage their going to
Oct 26, 2020 at 12:27 PM (Merged)
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CADIEMAN
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the lever.
Oct 26, 2020 at 12:27 PM (Merged)
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CADIEMAN
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find the connector on the brake light switch with the brown and gray wires remove it and jump the brown and gray wires.do u have a orange light then?this maybe is a misaligned brake switch or it is a bad 1.
Oct 26, 2020 at 12:27 PM (Merged)
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SEAN03
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Hey I had voltage their. How do I jump those wires. What do I need to do and then I guess I test it with the meter.
Oct 26, 2020 at 12:27 PM (Merged)
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CADIEMAN
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do u have voltage on the brown and gray wires at the brake light switch connector?
Oct 26, 2020 at 12:27 PM (Merged)
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CADIEMAN
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sorry been sick remove the connector on the brake switch. then jump the connector with a piece of wire.brown to gray.does it engage?
Oct 26, 2020 at 12:27 PM (Merged)
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SEAN03
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Ok I will do this tomorrow. My grandma fell and broke her hip. She is in bad condition.
Oct 26, 2020 at 12:27 PM (Merged)
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SEAN03
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Ok sorry I have been sick since yesterday. They think I am having a reaction to one of the medicines I am taking. That's what they are hoping. I think I have scarlet fever. I have had scarlet fever 8 times and the doctors can't figure out why I get it so much. They are worrying about my heart when I get older. I will try tomorrow. It just depends on how I am feeling thanks for understanding.
Oct 26, 2020 at 12:27 PM (Merged)
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SEAN03
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I also wanted to say I hope you get better cadieman. Just take a few days to recooperate. I am in no hurry.
Oct 26, 2020 at 12:27 PM (Merged)
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SEAN03
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Hey guys I didn't want you thinking I forgot. I can't catch a break I got scarlet fever so I have been in and out of the hospital. This is my first time in awhile I have gotten this. I have had this 9 times in my life. The doctors were like that is not good they said when you get 40 we will have to check your heart every year because it does something to the heart valves and something else to the heart. I will do this maybe next week if I feel good.
Oct 26, 2020 at 12:27 PM (Merged)
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KHLOW2008
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No worries. We will be here all the time and watching the thread.

Get well soon.
Oct 26, 2020 at 12:27 PM (Merged)
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CADIEMAN
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ya just feel better
Oct 26, 2020 at 12:27 PM (Merged)
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SEAN03
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Sorry cadieman I was using my phone and I accidentally pushed the flag for review button. I didn't mean to.
Oct 26, 2020 at 12:27 PM (Merged)
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SEAN03
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Ok so I did jump the gray and brown wires. I took a piece of wire put one on the wire strip and one on the other and it made no differance.
Oct 26, 2020 at 12:27 PM (Merged)
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KHLOW2008
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That would indicate the brake switch is not the cause of the problem.

We have been going around in circles and don't seem to be getting anywhere.

I did not go through all the post completely and might have missed out something so fill me in if necessary.

Is the Orange Indicator Light now showing when the switch is turned on? This light must be indicating so that the cruise control system is in standby mode for it to work when cruise speed is set.
Oct 26, 2020 at 12:27 PM (Merged)
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SEAN03
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No the orange light is still not on. Me and cadieman have checked power at the switch their is power going to the switch. I also tested both sides like cadieman wanted me to and i had power. I turned the car to the run position and pushed the off an warmer and let it go through then I turned the lever on and it shows E. 7.0 when I push the brake it switches from E.7.0 to E.0.0 same thing if you try to set it or resume. We just tried jumping the grey and brown wire on the brake switch. It made no difference the light did not come on.
Oct 26, 2020 at 12:27 PM (Merged)
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KHLOW2008
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You should get that resolved first as that is the main on off for the system. Without this light turning on, the cruise is never going to work, unless the problem is only a faulty bulb.

When switch is turned on, Check the Brown wire at brake switch for battery voltage.


Oct 26, 2020 at 12:27 PM (Merged)
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SEAN03
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Ok it had 11.5 volts I ground the back probe to metal and put the red probe on the wire.
Oct 26, 2020 at 12:27 PM (Merged)