Geez, all that rant for letters in the alphabet?
TPM=Tire Pressure Monitor!
+S=System/Sensor.
If you're looking for an actual reference to the sensor: Tire+Pressure+Monitoring+System+Sensor= TPMSS
I need another beer!

 

I never said that the sensors transmit rotation; of course they only transmit pressure. But the BCM doesn't "turn on" the sensors, it only looks for a signal from them. It is a receiver, not a transmitter. Meanwhile, the sensors are transmitters, not receivers, and the centrifugal force turns them on. They only transmit when they are rotating, otherwise the batteries would go dead in short order.

Let's look at this logically. If the BCM simply turned on the sensors when the truck is moving, then the spare would read fine while driving. But that's not the case; if your truck is trying to read the spare while going down the road, it will give you a "Service TPMS" message, regardless of the pressure level of that spare. So I would surmise that the BCM only looks for a signal from the sensors when the truck is in motion AND the sensors only transmit when they are rotating.
.

 

Did you read the posts above. No TPMSS installed here:

 

Btw, don't compare the DIRECT(H3) with INDIRECT TPM.
Direct TPMS gathers accurate pressure data directly from the tire valve via four dedicated sensors, reporting pressure information in near real time. Indirect TPMS, on the other hand, uses the ABS system to approximate tire pressure based on wheel rotations.

 

INDIRECT TPMS systems do not rely on centrifugal force, and have no place in this thread, so I'm not sure why you even brought that into the conversation other than to try to muddy the waters. And as an electrical engineer, I can tell you that every one of these "modules" that you keep linking to are simply transmitting a fake "pressure OK" signal for the BCM to receive, nothing more. THEY don't need to be rotating because THEY are always transmitting.

Go ahead; show me something that says that the H3's BCM is a transmitter. You can't, because it isn't. And if it's not a transmitter, then it CANNOT "turn on the sensors", as you have claimed. Show me something that says that the wheel sensors are both a transmitter AND a receiver. You can't, because they aren't. And if they are not receivers, then they CANNOT be turned on by a signal transmitted from the BCM. The wheel sensors are dumb; they are simple transmitters that are turned on by centrifugal force, nothing more. That's why they can last 10 years on a single button cell battery, while the "fake modules" that you keep pointing to will only last about 5 years with a huge (comparatively) pair of AA batteries (pretty much proving that the fake modules are transmitting all the time (or intermittently at least, depending on the model).

Here is how our H3's system works: While stopped, the BCM does not look for TPMS signals from the tires, and the TPMS sensors in the tires do not transmit. Once underway, the BCM looks for TPMS signals from the tires, and the TPMS sensors in the tires are turned on by the centrifugal force of the rotating tires and begin transmitting. It really is that simple.

 

That would be centripetal force, centripetal force is the force REQUIRED for circular motion. Regardless, many have fooled the bcm via the "pipe bomb" or even throwing them all into the spare tire. The main thing is to program the sensors first. No need to go any further with your conspiracy theories, since we are discussing vintage technology in our rides. Btw, I'm still driving with factory installed sensors and I don't have a tpms warning light @91,350miles.

 

Conspiracy or not, centrifugal force is what turns the sensors on.

"Centripetal force is the force REQUIRED for circular motion. Centrifugal force is the force that makes something flee from the center."

But I digress; mine are still working with 155,000 miles, and the only time I get a warning is on really cold mornings till the tires warm up.

 

So much info , my poor head can't take much more. Anyone think the pipe bomb really works? If so do you have to put all 4 sensors in ? How much pressure goes in pipe bomb? Which means you have to remove them from tires? I'd make one for the hell of it, if would work. Also the link to the little black box, Anyone buy one? Can you take out the sensors for ever? Kiss the light good bye ?

 

Sanders, I think many of us got lost in the weeds with this haha. I don't think the tube is meant as a suggestion for you (I think it was a technicality on the function of TMPS sensors). I think the bypass module (little black box) is recommended to you as a possible way to mitigate the issue.

My suggestion to you is having a shop with a shop-level scan tool verify your tire pressure monitoring system (TPMS) is adjusted to "Load Range C" and "32 PSI". If anyone has changed this setting in your computer (out of good faith), it may be causing your issue.

 

If your sensors don't work in the tires, how are they gonna work in a pipe bomb?
GET THE RIGHT SENSORS!
Then you can make a pipe bomb, make sure to program the sensors and let the glue dry before adding air(35psi).
Don't rush the process like this guy did: