Tire Mon Sys DIC Message
Tech Contributor
Joined: Oct 1999
Posts: 41,037
Likes: 9,801
From: Charlotte, NC (formerly Endicott, NY)
I've had my 2000 six speed for little over a month. Just before I bought it, the dealer put four new tires on the car.
Not knowing much about Corvettes at the time (I only know a little more now), I didn't pay much attention to this message.
I read what the owner's manual has to say about it.
But is there a way for me to turn the message off? Can I troubleshoot it, or do I have to go to a shop?
Not knowing much about Corvettes at the time (I only know a little more now), I didn't pay much attention to this message.
I read what the owner's manual has to say about it.
But is there a way for me to turn the message off? Can I troubleshoot it, or do I have to go to a shop?
Bill
Safety Car
Joined: May 2006
Posts: 4,289
Likes: 129
From: Providence Forge, VA
St. Jude Donor '08-'09-'10-'11-'12
Take the car out on the road. While moving, keep pressing the "Gauges" button until it shows your tire pressure. It'll show front, then press gauge again and it'll show rear. If any tire has RXXX or any code other than the tire pressure, its likely the TPM for that tire is either bad or out of sync. This alone will cause you to get a Service Tire Monitoring System message. I'd do this before you try anything real extensive, it'll narrow your problem down quickly.
Pro
Joined: Apr 2006
Posts: 552
Likes: 0
From: Alton Illinois
now, can you explain how the tps receiver can distinguish between the tire positions? i understand that each monitor transmits a unique code but i can not find out how the system know that that unique code is coming from a specific position. obviously can't if a tire is moved because it still reports the old position but something different happens during the learn process that allows it to distinguish each individual position. i thought there may be some sort of pickup at each position on the body to relay to the central module but apparently i am wrong. anybody know? i'm on a quest and obviously it doesn't make a bit of difference but a quest is a quest!
i also read something else of interest while looking for solutions to above. the stem is the antenna and i bet that is why you should use a plastic cap. the guys at ntb told me it was because it might seize and therefore it would be caught on a safety inspection because it was illegal
jim
i also read something else of interest while looking for solutions to above. the stem is the antenna and i bet that is why you should use a plastic cap. the guys at ntb told me it was because it might seize and therefore it would be caught on a safety inspection because it was illegal
jim
Last edited by bluvette79; Jan 27, 2007 at 08:45 AM.
Melting Slicks
Joined: May 2000
Posts: 2,498
Likes: 4
From: Brentwood TN
Charlie
Tech Contributor
Joined: Dec 1999
Posts: 32,910
Likes: 2,402
From: Anthony TX
CI 6,7,8,9,11 Vet
St. Jude Donor '08
Charlie posted before I could say the same thing!! 
The guys at NTB are blowing smoke up your''''''''. The OEM cap on a TPS is aluminum!! At least,,that is what came on mine!
The stem is not the antenna!! You can mount the sensor on rims that will not allow you to use stem mounted sensors by strapping then in the center. Some people chop off the stem to make them lighter. They still work fine.
Aluminum cap on a brand new sensor out of the box!
BC
Thread Starter
Advanced
Joined: Jan 2007
Posts: 96
Likes: 0
From: California
It might be fixed now
Take the car out on the road. While moving, keep pressing the "Gauges" button until it shows your tire pressure. It'll show front, then press gauge again and it'll show rear. If any tire has RXXX or any code other than the tire pressure, its likely the TPM for that tire is either bad or out of sync. This alone will cause you to get a Service Tire Monitoring System message. I'd do this before you try anything real extensive, it'll narrow your problem down quickly.
I followed your advice.
I pressed the Gauges button, as described, and the pressure reading of the front right tire was RXXX . All the other tires had a "normal" tire pressure reading.
Five minutes later, I pressed the Gauges button again, as before, and I got a normal tire pressure reading on all four tires.
So, something had changed.
The RXXX reading was gone.
Later, I turned the car off and then back on again to check the DIC messages.
The SERVICE TIRE MON SYS message did NOTappear in the DIC.
I did, however, unknowingly, hit the RESET button a couple of times before I hit the GAUGES button. I don't know if that played a role in resolving the problem or not.
As for why it seems to be fixed now, I'm not exactly sure -- but it definitely had something to do with cycling through the GAUGES button and maybe the RESETt button, too.
Later, I'll check the DIC again and see if the problem stays fixed.
Thanks to all for getting me this far.
Last edited by Uptospeed; Jan 27, 2007 at 04:13 PM.
Melting Slicks
Joined: May 2000
Posts: 2,498
Likes: 4
From: Brentwood TN
I followed your advice.
I pressed the Gauges button, as described, and the pressure reading of the front right tire was RXXX . All the other tires had a "normal" tire pressure reading.
Five minutes later, I pressed the Gauges button again, as before, and I got a normal tire pressure reading on all four tires.
So, something had changed.
The RXXX reading was gone.
Later, I turned the car off and then back on again to check the DIC messages.
The SERVICE TIRE MON SYS message did NOTappear in the DIC.
I did, however, unknowingly, hit the RESET button a couple of times before I hit the GAUGES button. I don't know if that played a role in resolving the problem or not.
As for why it seems to be fixed now, I'm not exactly sure -- but it definitely had something to do with cycling through the GAUGES button and maybe the RESETt button, too.
Later, I'll check the DIC again and see if the problem stays fixed.
Thanks to all for getting me this far.
I pressed the Gauges button, as described, and the pressure reading of the front right tire was RXXX . All the other tires had a "normal" tire pressure reading.
Five minutes later, I pressed the Gauges button again, as before, and I got a normal tire pressure reading on all four tires.
So, something had changed.
The RXXX reading was gone.
Later, I turned the car off and then back on again to check the DIC messages.
The SERVICE TIRE MON SYS message did NOTappear in the DIC.
I did, however, unknowingly, hit the RESET button a couple of times before I hit the GAUGES button. I don't know if that played a role in resolving the problem or not.
As for why it seems to be fixed now, I'm not exactly sure -- but it definitely had something to do with cycling through the GAUGES button and maybe the RESETt button, too.
Later, I'll check the DIC again and see if the problem stays fixed.
Thanks to all for getting me this far.
Charlie
Pro
Joined: Apr 2006
Posts: 552
Likes: 0
From: Alton Illinois
It knows because the "learn" progam requires a specific sequence, LF, RF, RR, LR. Because signal ID123 is the first signal to show up in the computer, that ID is stored as LF. Signal ID987 comes next, the computer is looking for RF, and that is what it stores. You can screw up the system by starting at the RF first. The computer will then display the RF tire pressure as the LF tire pressure because it was learned in an improper sequence. This is also why it is necessary to re-train all the sensors if you have to re-train any of the sensors, and you must do them in the proper sequence.
Charlie
Charlie
thanks for the info. when i learned mine i was having trouble with the right rear and i was told to skip the right rear if it didn't report and go to the left rear. when i did the left rear programmed fine and the dic reported left rear. i changed the right rear tps and relearned all fine. my question is, how did the system know i skipped the right rear and went to the left when it was looking for a right rear signal? especially if it is expecting codes in sequence. my system is working fine, i am just trying to figure out how the learn works. thanks for your input.
jim
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Burning Brakes
Joined: Mar 2003
Posts: 874
Likes: 0
From: Bonita CA
I'm having a problem with just one sensor. The L rear. In the early morning hours when it is below 55 degree outside the sensor seems to work until the tire warms up, then the DIC reads RXXX for that wheel. Bad sensor? Or does it need to be retrained?
Drifting
Joined: Jan 2005
Posts: 1,650
Likes: 2
From: Bakersfield Ca
Burning Brakes
Joined: Mar 2003
Posts: 874
Likes: 0
From: Bonita CA
Yes my car is a 99, however I put new wheels and new sensors on in early '04. I sold my original wagon wheels complete with tires and sensors.
Drifting
Joined: Jan 2005
Posts: 1,650
Likes: 2
From: Bakersfield Ca
Pro
Joined: Apr 2006
Posts: 552
Likes: 0
From: Alton Illinois
dj
if you havent tried a relearn i would strongly suggest that you do that first to see if the tps reports correctly. who knows, maybe the tires have been switched and who knows what you are reading. if one doesnt report (honk th horn) then you may be in for a new one.
i am not really an expert like a lot of these guys are but i have been through the tps learn several times and i replaced one on mine and got the system back up. just my $.02
good luck
jim
if you havent tried a relearn i would strongly suggest that you do that first to see if the tps reports correctly. who knows, maybe the tires have been switched and who knows what you are reading. if one doesnt report (honk th horn) then you may be in for a new one.
i am not really an expert like a lot of these guys are but i have been through the tps learn several times and i replaced one on mine and got the system back up. just my $.02
good luck
jim
Thread Starter
Advanced
Joined: Jan 2007
Posts: 96
Likes: 0
From: California
By the way do you have aftermarket or Z06 wheels on the car? Some people replace the stock wheels and do not put sensors in their new wheels. As mentioned the batteries are probably shot but the person changing the tires may have been a dumb a-- and screwed them up when removing the old tires or maybe replaced them with new valve stems not understanding what those funny looking things did. If you have rubber valve stems you do not have Tire Pressure Monitors in your wheels.
Bill
Bill
http://www.vetteweb.com/tech/0301vet.../photo_03.html
