I THOUGHT there was a problem with the KE TPMS Receiver because key fobs provided never worked but previous owner claimed they used to, although spotty.
After changing the batteries and they still wouldn't work or pair, thought it was the receiver. Replaced the receiver, commonly found as issue online. Still didn't work. Thought maybe something in setup . . . . . Anyway it was the KEY FOB chips. Which should be 315 MHz. They had 26.000 chips while CAN operate at 315 MHz they are NOT the correct TYPE. It is NOT compatible with FCC regulated transmissions as it is a clock frequency from a crystal oscillator for timing instead of a wave of wireless transmission of data.

So I don't know if they actually did ever work, just not effectively, or if the previous owner replaced them and never got them to work or what. Ordered new ones. Checked inside chip said 315 MHz and they paired perfect.

Disregard rest of thread below.




I have a 2002 C5 corvette that either has a(nother) bad TPMS (tire pressure monitor system) and Keyless entry RECEIVER MODULE 10312535 Oem Aa7334
or BCM (body control module) needs reset, maybe?
I installed a replacement RECEIVER MODULE and it still doesn't work using the DIC key reprogramming process, even with new batteries or whole new fob. Does it require a reset/configuration with a Tech 2 scanner or something?

It has never worked, prior owner(s) may have changed config? Or it may be some other electronic gremlin? NOTE: TPMS sensors might all be bad, only one worked when purchased, so no TPMS readings doesn't mean much. Does it require a reset/configuration with a Tech 2 scanner or something?

Advise from someone experienced with this issue or If in Tucson, anyone have Tech2 or a connection with someone that can hook me up to check this?

Thank you

PS old lady forum noob, so be gentile if I am doing it wrong. Please disregard any illusion that I know what I am talking about.

 

Pull your codes form the DIC and post them !

 

It isn't throwing any codes. It just isn't recognizing or completing the programming to the key fob(s).

 

..... Key fobs were wrong kind of signal. They had 26.000 MHz chips which CAN operate at 315 MHz but is NOT the correct TYPE. It is NOT compatible with FCC regulated transmissions as it is a clock frequency from a crystal oscillator for timing instead of a wave of wireless transmission of data.

 

I've programmed a new fob and did not need to go through the tire training. All four of my TPMS sensors were working at the time.
Also, don't trust AI without verification.

The attached document might help you understand the TPMS system and troubleshoot.

The C5 will show all stored trouble codes on the DIC. Record the process on your phone as you go through it is my advice. It's much easier to step through the video later.

 

Thank you for the response
That is why I disclosed it was AI and that I would update if it worked. There are no codes in the DIC. When we got the c5 it only 1 tire pressure sensor was reporting and neither key fobs worked.
Didn't care about the sensors. But replaced batteries in fob(s) found out one fob wasn't correct one anyway, bought a new one and still couldn't get the fobs to program. Replaced the receiver module and still couldn't get them programmed. In the meantime last tire sensor quit reporting (probably because needs learned, but others in sequence are inoperable or my magnet isn't doing the job). I Am putting new wheels and tires on anyway, and the sensors are way cheaper and easier to find than the module was, so might as well give it a try.

 

Are you getting the SERVICE TPM SYSTEM message? I think that should be coming up if the receiver module is communicating with the BCM but not any sensors.

 

Ok, so you are confirming that you went into diagnostic mode in the DIC and check for codes. Correct?

 

Yes, you can @Bill Curlee or send them a private message via https://www.corvetteforum.com/forums...ll-curlee.html

 

No sir

 

Something is very very wrong here. There should be at minimum some stored codes if there are communication issues between modules.
I think maybe we are not on the same page regarding what a code is and how to see them.
I don't know where to go from here. Good luck.

Great question.

 

Yes, I went into the diagnostic mode in the DIC. It is not showing any codes in any of the systems.

 

Ok good. What part number FOBs are you using, and have they been tested to make sure they are transmitting?

 

Yes, they have been tested. They were tested at O'rilleys key fob tester. So it showed they were transmitting (ie had power) but after opening them found out the chip was the wrong type of signal

 

Ok. Is the receiver you posted the actual receiver you have? I ask, because it is the identical receiver (part number and serial number) still for sale on ebay........in fact...it's the same picture.

https://www.ebay.com/itm/13684320966...3ABFBM-tqP4-hm

 

You say that you have no codes, which would normally suggest the receiver has 12v and ground..............but.........you also (unless you have not disclosed) do not have any warning messages, which suggests TPMS has been disabled in the BCM.

 

yes, because that is exactly where I bought it from and didn't feel like taking a separate picture. And, it is exactly the same as the one I removed, except that the case on that one had cracks

 

Well ok then. Good luck with your issue

 

If the BCM has not been enabled for TPMS, TPMS will not show up in the TPMS / FOB programming menue. All C5 are enabled with the RFA ( Remote Function Actuator) in the DIC menue for FOB operation. Do you have any DTCs in the RFA DTC menue selection?
NEXT; Beg/borrow or purchase a multimeter. Unplug the RFA module and phisically measure the voltage at the RFA module harness connector. If memory serves me well, the positive 12 VDC wire is PINK & THE neg/GROUND IS BLACK / WHITE STRIPE. YOU SHOULD SEE BATTERY VOLTAGE ON THE HOT WIRE ALL THE TIME. What ever battery terminal voltage is at time of measurement is what you should see on the hot wire.
If you have power & GROUND, if the module is good, the BCM should be communicating with thr RFA. Do you have any U series DTCs in any modules? U series DTCs are telling you there is a communication failure in the reported or reporting module.
Take your FOBs to an autoparts store with a FOB TESTER and see if they are transmitting.