What year engine is it... cause when I check the wiring diagrams for an obd2 B16... the ect sensor wires are red/white and green/black. And for this engine it matters which wire goes where. red/white goes to ECU pinout D2 and green/black goes to a junction connector which is common to the IAT, Fuel Tank Pressure Sensor, and TPS. Then from the junction connector it goes to the ECU Ground Pinout D11. Again this won't apply if your engine is obd1 or obd0.