DIY Cruise Control FAQ (2006-2010 Yaris)

[teddy]

That's one more piece of the puzzle... Unfortunately I still don't know where the terminals from D3 connect go to, nor where the ECM connector connects from..

I will definitely be compiling this into a guide when this is done.

[CTScott]

Originally Posted by teddy

That's one more piece of the puzzle... Unfortunately I still don't know where the terminals from D3 connect go to, nor where the ECM connector connects from..

I will definitely be compiling this into a guide when this is done.

OK - The ECM pin goes into position A21-pin 40, per the link above. The wire from there connects to pin 1 of D3 (where the blue wire is in the picture below). The second D3 pin goes where the brown wire is in pin 2 of D3. That wire simply gets tied to a chassis ground point (and bolt going into steel under the dash).




On the other side of D3 is the spiral cable (or clockspring as some call it). That is the wiring that goes into the steering wheel. The plug and play connector from the stalk connects the stalk to the two pins above in D3.

The final piece of the puzzle is the horn wire. The existing horn wire has to be moved into the new spiral cable connector in the same position that it was in in its existing connector.