2006 cruise control

[630R63]

Just moved this post here.

My DIY cruise stopped working on my 06 Aveo5 5 speed after a few years of 100% reliable use.
I attempted a few things to repair to no avail (re wired AND bought a new switch, disconnecting battery )
I occasionally get a code, not a direct quote but something like speed sensor low voltage. Also after it throws the code my RPM Limiter is reduced to 5000RPM (From 6500)
anyone have any idea what to try next? or what could be causing this?

[petrified.rabbit]

sounds like a bad speed sensor signal..? i would suggest trying to get a reading from it in real time, and look what spec would be.

i dont even know which sensor would throw a code like that? timing? crank sensor?

[630R63]

I will try and reproduce code and get the exact quote. what do you mean by real time reading? is that something I can do with the ODB-II reader? this http://www.auteltech.com/ms409.htm is the reader I have by the way. thanks for the help rabbit.

[petrified.rabbit]

it might? it looks like it you can access it, it will come out in graph form like the screen shows. it must be under freeze frame, or the emissions thing (i dont still have the window up)

wish i could help further with that particular unit, i need to use stuff to know what it can do.

you might need to find the switch and hook a multimeter into it to see what voltages it reads and compare to spec readings.

[630R63]

Ok I couldnt get the code to come back but I had a record of the code.
it is P0502

"Vehicle Speed Sensor A Circuit Low"
since I cant get it to come back I cant get a reading in real time right?

[petrified.rabbit]

well a reading is a "copy" of the signal the sensor is sending in eal time. so if you can find the signals channel, or hook it up to a multimeter, then yes you can get a real time reading.

[630R63]

I don't think my odb-II reader has anything like that, or I have no clue how to access it. I have went through all the menus and failed to find any graphs. so I guess I will have to check with a multimeter. Is there only 1 speed sensor on these vesicles? any idea where it is?
Thanks for the support rabbit.
I'm guessing a GM dealer wouldn't want to help me with this one. they would probably say something like "why are you revving past 5000 anyways? no wonder your having problems!" not to mention the McGiverd cruise control.

[petrified.rabbit]

does your car have abs?

i am thinking it is either the speedo sensor in the tranny, probably near the bellhousing. or one of the abs sensors..if you have that.


technically, a sensor problem is separate form the cruise, even though the cruise wont work. so the dealer should fix it.

[630R63]

No ABS. I will look around the bellhousing. Ill do a quick search on here to see if I can find any speed sensor references

[petrified.rabbit]

i assume the tranny is the same. so if you look behind the bell housing past the shifter. you will see a "plug" with wires just to the passenger side. that should be it.

best picture?!?: