Heated Oxygen Sensor (HO2S) #12 Connector end view (C142)

Fig 1: Heated Oxygen Sensor (Ho2S) #12 Connector End View (C142)

Courtesy of FORD MOTOR CO.

Pin	Circuit	Circuit function
1	361 (RD)	Voltage supplied in Start and Run (overload protected)
2	389 (WH/BK)	Heated Oxygen Sensor (HO2S) #12 (9G444), heater
3	359 (GY/RD)	signal, return
4	392 (RD/LG)	Heated Oxygen Sensor (HO2S) #22 (9G444), input