Heated Oxygen Sensor (HO2S) Connector End Views

Heated Oxygen Sensor (HO2S) Bank 1 Sensor 1

Courtesy of GENERAL MOTORS CORP.
Connector Part Information		12160825 4-Way M Metri-Pack 150 Series, Sealed (GRY)
Pin	Wire Color	Circuit No.	Function
A	TAN	1664	HO2S Low Signal (Bank 1 Sensor 1)
B	PPL/WHT	1665	HO2S High Signal (Bank 1 Sensor 1)
C	BLK/WHT	3113	HO2S Heater Low Control (Bank 1 Sensor 1)
D	PNK	539	Ignition 1 Voltage

Heated Oxygen Sensor (HO2S) Bank 1 Sensor 2

Courtesy of GENERAL MOTORS CORP.
Connector Part Information		12176897 4-Way F Metri-Pack 150 Series, Sealed (LT GRY)
Pin	Wire Color	Circuit No.	Function
A	TAN/WHT	1669	HO2S Low Signal (Bank 1 Sensor 2)
B	PPL/WHT	1668	HO2S High Signal (Bank 1 Sensor 2)
C	BRN	2391	HO2S Heater Low Control (Bank 1 Sensor 2)
D	PNK	539	Ignition 1 Voltage

Heated Oxygen Sensor (HO2S) Bank 2 Sensor 1

Courtesy of GENERAL MOTORS CORP.
Connector Part Information		12160482 4-Way F Metri-Pack 150 Series, Sealed (BLK)
Pin	Wire Color	Circuit No.	Function
A	TAN	1667	HO2S Low Signal (Bank 2 Sensor 1)
B	PPL	1666	HO2S High Signal (Bank 2 Sensor 1)
C	LT GRN	3212	HO2S Heater Low Control (Bank 2 Sensor 1)
D	PNK	539	Ignition 1 Voltage