Stumped with Cruise Control

49erRider · Mar 2, 2009

Ok, Just installed cruise control in a 2000.

Finished everything up only to have it not work. At first I thought maybe you had to reach a certain speed to get it going but got it up to 50 and nothing. Anyone know the best way to troubleshoot this?

49erRider · Mar 2, 2009

I mean I don't really know where to start but I'm guessing it has to be electrical because the light won't come on. Hmmm what a bummer put it all in just for it not to work.

jneary · Mar 2, 2009

without any diagnostic equipment, it would be hard to say, does the light illuminate on the dash, is there sufficient vacoom to the servo, maybe the brake light switch is bad.

jneary · Mar 2, 2009

is that the kit where you add the wire to the clockspring harness, maybe the wire is in the wrong cavity, are the switches plugged up

49erRider · Mar 2, 2009

Light doesn't come on at all. Nope bought an original clockspring. Yep switches are plugged up as well. All I did was connect one vacuum hose to the T fitting near where I added the servo. Brake light switch - how would I test for that and would I have noticed before adding cruise?

jneary · Mar 2, 2009

you need to get the light to come on in the dash. when you select "on" it sends a signal to the pcm, and that enables the cruise system, are the switches new.

49erRider · Mar 2, 2009

Nope nothing is new. All from ebay but was told worked when pulled.

jneary · Mar 2, 2009

if you take the switch out you should see a resitance drop at the 2 terminals when pressing it. i'm not sure of the values though. i'm thinking the switch has an open circuit

jneary · Mar 2, 2009

what year did the cruise come from. it looks like the switches are different from '98 to '99. '99-2002 use the same switch. 98 is different.

49erRider · Mar 2, 2009

Yah I'll check on that.

49erRider · Mar 2, 2009

The auction said 97-2001 but I guess there not compatible. I emailed asking what year they were pulled from.

jneary · Mar 3, 2009

looks like the only thing different is the switches

49erRider · Mar 3, 2009

Wonder if theres anyway to look at them and tell.

jneary · Mar 3, 2009

if you can see the number56007531ac. its earlier. if its 56007531ad its the later

49erRider · Mar 3, 2009

God they came from a 98. Ok back on the hunt for some 99 and up switches. Anyone got a source

49erRider · Mar 3, 2009

Ok do you think the wiring between the switches is the same?

jneary · Mar 3, 2009

the servo is the same, and i believe the clockspring is the same too.

49erRider · Mar 3, 2009

The wiring between the switches though?

49erRider · Mar 3, 2009

Yah looks like the wiring is as Jeepsrus only sells one set for the 97-01 but they switches are year specific. Man I don't want to spend like 90 dollars on switches from them.

winterbeater · Mar 3, 2009

I believe that if only the last suffix changed, it will be compatable. If the switches make connection across the same wires, it doesn't matter. Jump a 12V signal to the pcm wire that takes the on signal to see it that turns on the dash light.

Stumped with Cruise Control

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