Remote Start DIY Wiring Guide 2006-2010 Yaris

[Skylinecar1982]

Yeah I found the two wires White and Red I disconnected the red and the wireless didn't work anymore nevermind when the key was in.

Do you know exactly what happens between the BCM and the Door Receiever within those two wires? I don't see any of the wires going directly to the door lock system. So the BCM has to do the work to cut it off.

So the issue is probably the key ecu telling the BCM that the key is in the ign. And to block the signal between the two may cause more issues then I have already.

[CTScott]

Originally Posted by Skylinecar1982

Yeah I found the two wires White and Red I disconnected the red and the wireless didn't work anymore nevermind when the key was in.

Do you know exactly what happens between the BCM and the Door Receiever within those two wires? I don't see any of the wires going directly to the door lock system. So the BCM has to do the work to cut it off.

So the issue is probably the key ecu telling the BCM that the key is in the ign. And to block the signal between the two may cause more issues then I have already.

Did you try the white separately as well? The reason I ask it that the two are listed as input an output, but it is not clear as to whether the in and out are relative to the body ECU or to the door control receiver.

The service manual doesn't detail the comm between the two, and since it is two wire, instead of one I believe that rather than being LIN bus, like a lot of the other subsystems are to their respective ECU, that it is simply a simple pulse signal in either direction. You could verify that with a voltmeter, by watching the white and red relative to body ground, while hitting the remote.