What is code Co196 - Cadillac XLR Forum: XLR and XLR-V Forums
 
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post #1 of 11 (permalink) Old 07-09-2016, 07:06 AM Thread Starter
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What is code Co196

My 08 has been in the shop 3 times for "Service Stabilitrac" and " Service Radar Cruise". Lots of computer parts changed. What gives????
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post #2 of 11 (permalink) Old 07-09-2016, 10:28 AM
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post #3 of 11 (permalink) Old 07-10-2016, 10:54 PM
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The article cited pretty much fell apart when the writer described the yaw sensor as measuring "tilt". If you're familiar with the terms pitch, yaw, and roll, you get my drift.

A yaw sensor measures heading, which is totally different than tilt, roll, or, pitch.

If the yaw sensor sense of heading disagrees with the steering wheel position sensor, StabiliTRAC engages by applying the brakes on one side to correct the vehicle's heading.

You have two separate problems and there is no way to conclusively tell if the traction control issue is caused by a defective yaw sensor without measuring the voltage from it as the vehicle is turned. The most likely reported cause of traction control problems are defective wheel speed sensors. There is also a TSB ( Technical Service Bulletin) related to inadvertent engagement of StabiliTRAC your dealer can look into if you're having those symptoms.

You don't mention what corrective action your dealer has taken previously, but a defective or misaligned DSCC (cruise) module or misaligned bracket that supports the module may be the cause of your Service Radar Cruise message. If bad, you're in luck. Earlier model DSCC's are no longer available from GM.

If you have the option, try another dealer for a second opinion. These two systems aren't that hard to work on (if the fault can be duplicated.)

CC

Last edited by ccclarke; 07-12-2016 at 01:53 PM.
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post #4 of 11 (permalink) Old 07-12-2016, 01:51 PM
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To answer your original thread title, the CO196 DTC refers to the StabiliTRAC yaw sensor circuit or related components (wiring, connectors) up to and including the Electronic Brake Control Module.

There should be other DTCs associated with this that describe why the yaw sensor is being called out.

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post #5 of 11 (permalink) Old 07-21-2016, 06:20 PM Thread Starter
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All I can tell you is that I left it with Barksdale Cadillac in Jackson with Mark Tutor as my Service Writer. They have been very nice. Loaning me a car, no excessive charges, changed lots of parts but still no solution as it is intermittent. Been there 3 weeks and Mark has driven it home. Had problem himself once. Thought it was fixed, but naturally on my 100 mile plus trip home both Service Stabilitrak lit then later Service Radar Cruise lit. One new thing. Red light Beep Beeps in the windshield display. Appears related to cruise but you tell me.
Any suggestions are appreciated. Mark is going to talk to Cadillac because this has been going basically since car was new😝
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post #6 of 11 (permalink) Old 07-22-2016, 07:07 PM Thread Starter
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Learned tonight that the beep beep were standard warnings. Read some printouts that Mark gave me. Still no idea as to underlying cause tho'😩
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post #7 of 11 (permalink) Old 07-24-2016, 08:08 AM
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First off, we should probably get our terminology straight so everyone reading along can make sense of the problem and symptoms.

Any time a problem is being described --whether it's online or to a Service Writer, it's important to be very specific and include as much information as possible. Of course, not everyone is a technician, but it helps everyone trying to get to the bottom of a problem to be presented with the most proper terminology possible. If you take the time to read threads on the XLR sites, you'll be a pro in no time.

Lights don't beep. They flash. Audible alarms make sounds.

If you mean to say the Head-Up Display (what you're calling the windshield display) is showing a flashing car crash symbol and audible alarm at the same time, that indicates the Adaptive Cruise Control is warning you a detected object is closing too rapidly and you need to intervene manually. This is a normal condition; unless the cruise control is not engaged. It should have been operating this way since the car was new. If it's doing this with no cars in sight on a straight stretch of road, that indicates something else.

If it's something else, then a more descriptive explanation is needed to understand what the problem is related to. (Indicators, modes selected, external conditions, etc.) When remotely troubleshooting a problem online, you need to include as much information as possible, since there's no access to the vehicle. It also makes the tech's job at the dealership easier, --especially if the problem is intermittent.

You haven't included any technical information from your service invoice provided by the dealer. These are written up by the tech that worked on your car and relayed to the Service Writer --who may not even know what any of it means -depending on their technical background. Some dealerships rotate technicians through the front desk, others do not.

The technical narrative contained in the comments section of the invoice might make a difference to this conversation. You may (or may not) have more than one problem, but more information is required to even begin to intelligently research what's happening with your car.

CC

Last edited by ccclarke; 07-24-2016 at 01:14 PM.
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post #8 of 11 (permalink) Old 07-24-2016, 09:11 PM Thread Starter
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Thanks for the comments, Mr Clarke. As I mentioned, I read the notes and found what the beeps and corresponding flash in the display meant. That had never happened before in all the years I have owned this car. In their changes and adjustments it may be more sensitive. I will pull the paperwork and let you know what items have been replaced. The "Service Stabilitrak" and "Service Radar Cruise" appear for no apparent reason. Stabilitrak seems to usually be related to making a sharp turn as a street corner but came on once when I was parked in 'park' on the side of a street. Think the is a wire frayed or shorted somewhere.
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post #9 of 11 (permalink) Old 07-25-2016, 04:49 AM
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The majority of faults associated with intermittent StabiliTRAC messages on the DIC are related to bad wheel speed position sensors. This might explain why you sometimes see this message when cornering.

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post #10 of 11 (permalink) Old 07-30-2016, 04:37 PM Thread Starter
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Back again with same problem. Two times yesterday, once stopped at a red light. 3 times today, once stopped in traffic and once in the garage. Hot day today.😳🃏
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post #11 of 11 (permalink) Old 08-01-2016, 08:51 PM Thread Starter
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Took it back to Barksdale Cadillac today because I will be out of town for a bit. Naturally, just like when you go to the doctor, no symptoms whatsoever on the 100 mile trip up there. Car ran perfectly like the proverbial bat out of #**😃
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