car will not start after connecting sensor

[mariann]

Yes i can but i will do that tomorow. now its late.
if i remember correctly the old original one have two black wires one blue and one white connected in a cillicone casting to prevent water into sensor. the new replacement one have two white one black and one gray wires.
connected to the sensor with a metal cap that the wires are loos inside and i cannot see the cillicone seal...
hope this help untill tomorow.

[CTScott]

Originally Posted by mariann

Yes i can but i will do that tomorow. now its late.
if i remember correctly the old original one have two black wires one blue and one white connected in a cillicone casting to prevent water into sensor. the new replacement one have two white one black and one gray wires.
connected to the sensor with a metal cap that the wires are loos inside and i cannot see the cillicone seal...
hope this help untill tomorow.

OK - I just found the diagram for the aftermarket sensors. The two white wires are the heater wires, the black wire is the signal and gray is ground.

If I remember correctly, your Yaris has the 2SZ-FE engine, which would mean that the secondary O2 sensor wires are violet and light green for the heater, green for the signal, and gray for ground. Those colors though are at the connector that the sensor plugs into, as opposed to the sensor itself.

So, if you can verify the old sensor connector to harness connector colors, we can figure out the correct wire color mapping for the new sensor.