I have a 2000 CONV
Recently i replaced the 2 rear tires and sensors
my front Left sensor is working fine and reporting correct pressure
however i cannot get it to re-learn or honk the horn i got the 1 rear to honk the horn 1 time when i tried it (out of sequence) however i could not get it to again . i have tried before and after a drive, with lots of magnets and i borrowed the OTC TPMS tool (handheld scanner and magnet)it could not register any of the sensors. however the tec wondered if it was working properly he said it cost 1800 and he has never seen it work yet. considering i still have a front LEFT working perfectly i assume it would at least register that one.



DO i have a problem with the reciever portion of this sytstem? my key FOB started malfunctioning and it is only 4 months old? it has almost no range any more. IF it is how do i check it?
I dont trust the local dealership to work on bag of chips............considering they can barely fix a 89 cavalier

 

If your key fob isn't working correctly, I'd start there. It might be as simple as the battery getting old. They're easy and cheap to replace, then go back and try the re-learn again.

 

metalrod,

It is certainly within the realm of possibilities that your receiver is bad, although it is not a common occurrence. Both the TPS's as well as the key FOB's have batteries in them and are more often than not, the source of the problem. A weak battery will directly affect the range at which they operate. The receiver uses vehicle battery power which is typically a more stable power source.

You mentioned that you replaced the two rear tires and sensors. Does that mean you replaced the two sensors with new ones? It seems that you got one of them working initially so at least one of them was transmitting. One thing I have noticed when performing the relearn, is that the first sensor typically takes a few more seconds than the remaining and in each case I would hold it at least 3-5 seconds for the sensor to react.

I have done this procedure with everything from a pencil magnet (for retrieving lost bolts!) to an old speaker magnet with a hole in the center that I simply place over the sensor. In every case I've encountered no problems. Batteries do go bad eventually however, and being a 2000, I would certainly expect the sensors to be reaching the end of their battery life.

The FOB's also seem to experience battery contact issues internally. There have been a number of threads in the past on how to correct this problem. If you do a search on the subject, you will probably find it. Since the 2000 FOB is unique to the this vehicle if you know someone in the area that has a 2000, you may be able to eliminate the receiver as the problem by getting their FOB to sync to your vehicle.

Good luck, try a bit more troubleshooting, and let us know what you come up with. Let us know where you're located and someone may be local to you that can offer assistance.

GUSTO

 

One more point to consider...Do you have stock or aftermarket wheels? If aftermarket, are you using the sensors in their intended configuration, or are they "banded" within the tries, with the valve stems cut off?

I ask this because I had aftermarket wheels with "clipped and banded" sensors, and did have problems getting the sensors to "acknowledge". In fact, I went so far as to replace the FOB/TPMS receiver, thinking it was the problem, when instead it was the sensor itself. Without the valve stem on the sensor, it has no antenna to transmit with.

 

YES NEW SENSORS in rear trires. key fob is moody (8 months old)but has been working fine ill replace the battery
confused as why the only sensor that works with the car (LF) does not chirp the horn?

 

Have you verified the left front sensor is the one communicating with the system? Just because you are getting a reading from a sensor and the system is reporting it is the left front does not mean it is the left front sensor that is broadcasting. Make a drastic change in the air pressure of the left front tire and see if it is reported on the DIC.

Bill

 

yes if i wasnt sure i would not state that it was working.
any one have a idea for me to try? dealership on vancouver island wants me to pay 375 each and get 4 sensors before they look at it because they didnt sell me the ones i have, i have 2 new sensors on the rear that i got from another dealership a ferry ride away every time i go to a dealership they seem to want 1000 dollarsis is that the corvette tax?

 

Check your DIC for DTC's. My guess is your going to find that you have a bunch of U series codes. That usualy means that the main 12 VDC battery is marginal and upon cold start allows the battery output drops lower than the module low voltage cut off. If you have to constantly "RE-SYNC" your FOB, that could be part of your problem.

You can monitor battery output with a volt meter. read

If you have a RFA module DTC, it could effect the proper opreation of the receiver and not let it to train the TPS properly. Charge your battery, clear all the DTC and try the TPS re-train procedures again.

Make sure that you use a fairly strong magnet and place it directly over the sensor and hold it stationary until you get the beep. Remember, the sensor is inboard of the stem and lays flat against the rim.

If you need instructions for reading DTC's,,,here it is:

This is the absolute best C5 Diagnostic Trouble Code (DTC) web site!!!

http://www.corvettedoctor.com/Code_Main.html
http://www.corvettedoctor.com/index.html

www.corvettedoctor.com

Go to “technical data base” and then to “Corvette ECM Computer Codes”. Then select your year car. Read the instructions and then scroll down to the "READ MORE" window to view the code definitions.\

Here is another very good site:

http://www.obd-codes.com/trouble_cod...d-ii-codes.php

Make sure to include the H or C suffix!!

Bill Curlee