Remote Head Proportioning Trailer brake controller

[adrian5800 Advanced Member Find all posts View Profile Close adrian5800]

Guys,

I doubt that the OBD plug has anything to do with the braking system, more of an ancillary unit similar to a Scangauge, but with less info.

Cheers
Geoff

+1
I can't believe OBD supplies road speed or braking data real time.

[mjrandom Out of control poster! Find all posts View Profile Close mjrandom]

I would think that the braking effort input will come from the motion sensors not how much the brake pedal is pushed. Unless Toyota snuck in some F1 technology before it became F1 technology. Quick someone look and see if there is a generator connected to the gearbox...

[Prone Member Find all posts View Profile Close Prone]

I have seen this mentioned on other forums and was initially sceptical of what may be on the OBD11 port. So I went and looked at the braking system on the 150. There are quite a few inputs to the "Skid Control ECU" Some are-

Brake pedal load sensing switch
Stop Light
Master cylinder pressure
Speed sensors
Diff lock

And on the CanBus

Acceleration sensor and Yaw rate
Main body ECU
Four wheel drive ECU

I am not certain where the OBD11 gets its info from but it does seem possible it could have quite a bit of information about braking.

Update- On further checking I found that the OBD11 connector is called the DLC3 connector (Data Link Connector 3) by Toyota. This is the socket under the steering column. It provides an output of (and input to) the CAN Bus to anything plugged in.

Cheers
Prone