Engine Control Module (ECM) Connector End View/Part Information/Terminal Identification K (MR140)

Courtesy of GENERAL MOTORS CORP.
Connector Part Information		AMP 0-368434-1 64-Way F ECU 64P Conn Assembly (32-bit-B) (BN)
Pin	Wire Color	Circuit No.	Function
1	RD/WH	-	Battery Positive Voltage
2-4	-	-	Not Used
5	GY	-	Octane Selector Switch Signal
6	D-GN/WH	-	Vehicle Speed Signal
7	BN	-	Rough Road Signal w/ABS
8-11	-	-	Not Used
12	GY	-	High Speed Cooling Fan Relay Control
13	YE	-	Intake Manifold Tuning Valve Control
14	PU	-	CAN Serial Data High
15	YE	-	CAN Serial Data Low
16	BK	-	Heated Oxygen Sensor 1 Heater Control
17	RD/WH	-	Battery Positive Voltage
18	PK	-	Ignition 1 Voltage
19-20	-	-	Not Used
21	D-GN	-	Rough Road Signal w/o ABS
22	L-BU	-	Air Conditioning Refrigerant Pressure Switch Signal
23	-	-	Not Used
24	GN	-	Engine Coolant Temperature Gage Control
25	WH	-	Engine Speed Signal
26-27	-	-	Not Used
28	GN	-	Low Speed Cooling Fan Relay Control
29	PU/WH	-	Air Conditioning Compressor Clutch Relay Control
30	PU	-	Fuel Gage Control
31	-	-	Not Used
32	BK/WH	-	Serial Data
33	-	-	Not Used
34	L-BU	-	Low Reference
35	D-GN/WH	-	Air Conditioning Request Signal
36	BN	-	Heated Oxygen Sensor 2 Signal
37-49	-	-	Not Used
50	OG/BK	-	5-Volt Reference
51	GY	-	Fuel Level Sensor Signal
52	-	-	Not Used
53	PU	-	Heated Oxygen Sensor 2 Low Reference
54	L-GN	-	Fuel Pump Relay Control
55-63	-	-	Not Used
64	BN/WH	-	Malfunction Indicator Lamp Control