Engine Control Module (ECM) Connector End Views

Engine Control Module Connector End View (ECM) C1

Courtesy of GENERAL MOTORS CORP.
Connector Part Information		1928403379 64-Way F (BLK)
Pin	Wire Color	Circuit No.	Function
1	TAN	407	Knock Sensor Low Reference Bank 2
2	-	-	Not Used
3	LT GRN	5278	HO2S Input Pump Current Bank 1 Sensor 1
4	ORN	5275	Camshaft Position (CMP) Sensor Signal - Intake Bank 1
5	GRY	605	5-Volt Reference
6	-	-	Not Used
7	TAN	470	Low Reference
8	PPL	486	TP Sensor 2 Signal
9	DK GRN/WHT	2124	Ignition Control 4
10	WHT/BLK	5039	Crankshaft Position (CKP) Sensor Signal
11	-	-	Not Used
12	ORN/BLK	5272	Camshaft Actuator Solenoid Control - Intake Bank 2
13	LT GRN	5282	Camshaft Actuator Solenoid Control - Exhaust Bank 1
14	-	-	Not Used
15	BRN	582	TAC Motor Control - 2
16	GRY/WHT	3113	HO2S Heater Control Bank 1 Sensor 1
17	GRY	1716	Knock Sensor Low Reference Bank 1
18	-	-	Not Used
19	PPL/WHT	1665	HO2S Reference Voltage Bank 1 Sensor 1
20	DK GRN	5273	Camshaft Position (CMP) Sensor Signal - Exhaust Bank 1
21	GRY	23	Generator Field Duty Cycle Signal
22	-	-	Not Used
23	YEL	410	ECT Sensor Signal
24	-	-	Not Used
25	LT BLU/WHT	2126	Ignition Control 6
26	ORN/WHT	2122	Ignition Control 2
27-28	-	-	Not Used
29	PPL	5284	Camshaft Actuator Solenoid Control - Intake Bank 1
30	WHT/BLK	5283	Camshaft Actuator Solenoid Control - Exhaust Bank 2
31	YEL	581	TAC Motor Control - 1
32	-	-	Not Used
33	DK BLU	496	Knock Sensor Signal Bank 1
34	-	-	Not Used
35	WHT	5279	HO2S Pump Current Bank 1 Sensor 1
36	PPL	5274	Camshaft Position (CMP) Sensor Signal - Exhaust Bank 2
37	BRN	1174	Engine Oil Level Sensor Signal
38	DK GRN/WHT	357	Engine Oil Temperature Sensor Signal
39	TAN	2752	Low Reference
40	TAN/BLK	231	Engine Oil Pressure Sensor Signal
41	DK GRN	2125	Ignition Control 5
42	PPL	2121	Ignition Control 1
43	ORN	225	Generator Turn On Signal
44	DK BLU/BLK	5041	Intake Manifold Runner Control (IMRC) Solenoid Control
45	DK BLU/BLK	844	Fuel Injector 4 Control
46	PNK/BLK	1746	Fuel Injector 3 Control
47	TAN/WHT	845	Fuel Injector 5 Control
48	LT GRN/WHT	428	EVAP Canister Purge Valve Control
49	GRY/BLK	1798	Engine Ground - Shield
50	LT BLU	1876	Knock Sensor Signal Bank 2
51	-	-1	Not Used
52	TAN	1664	HO2S Low Reference Bank 1 Sensor 1
53	YEL	5276	Camshaft Position (CMP) Sensor Signal - Intake Bank 2
54	GRY	2701	5-Volt Reference
55	DK GRN	485	TP Sensor 1 Signal
56	ORN/BLK	5266	BARO Sensor Signal
57	GRY	705	5-Volt Reference
58	LT BLU	2123	Ignition Control 3
59	PPL/WHT	5024	CKP Low Reference
60-61	-	-	Not Used
62	LT GRN/BLK	1745	Fuel Injector 2 Control
63	TAN	1744	Fuel Injector 1 Control
64	YEL/BLK	846	Fuel Injector 6 Control

Engine Control Module Connector End View (ECM) C2

Courtesy of GENERAL MOTORS CORP.
Connector Part Information		1928403386 64-Way F (BLK)
Pin	Wire Color	Circuit No.	Function
1	PNK	5290	Ignition 1 Voltage
2	-	3122	Not Used
3	PNK	239	Ignition 1 Voltage
4	DK BLU	473	High Speed Cooling Fan Relay Control
5	WHT	121	Engine Speed Signal
6	-	-	Not Used
7	WHT/BLK	1164	5-Volt Reference
8	PPL	1272	Low Reference
9	RED/BLK	380	A/C Refrigerant Pressure Sensor Signal
10	WHT	5371	Stop Lamp Switch Signal
11	TAN	472	IAT Sensor Signal
12	DK GRN	890	Fuel Tank Pressure Sensor Signal
13	-	-	Not Used
14	GRY/BLK	87	Cruise Control Resume/Accel Switch Signal
15	ORN/BLK	463	Requested Torque Signal
16	-	-	Not Used
17	PNK	5290	Ignition 1 Voltage
18	-	-	Not Used
19	DK GRN/WHT	465	Fuel Pump Relay Control
20	DK GRN	335	Low Speed Cooling Fan Relay Control
21	-	-	Not Used
22	DK GRN	389	Vehicle Speed Signal Output
23	TAN/WHT	2500	CAN Serial Data High
24	BRN	5069	Engine Controls Main Relay Control
25	BLK	2759	Low Reference
26	BLK	2760	MAF Sensor Low Reference
27	-	-	Not Used
28	-	-	Not Used
29	PPL/WHT	1668	HO2S Signal Bank 1 Sensor 2
30	DK BLU	84	Cruise Control Set/Coast Switch
31	YEL	5	Crank Voltage
32	ORN/BLK	1786	PNP Signal
33	WHT	1310	EVAP Canister Vent Solenoid Control
34	-	-	Not Used
35	YEL/BLK	625	Starter Relay Control
36	ORN	540	Battery Positive Voltage
37	TAN/BLK	464	Delivered Torque Signal
38	-	-	Not Used
39	GRY	596	5-Volt Reference
40	BRN	1271	Low Reference
41	-	-	Not Used
42	PPL	1589	Fuel Level Sensor Signal - Primary
43	YEL	492	MAF Sensor Signal
44	LT BLU	1162	APP Sensor 2 Signal
45	GRY	397	Cruise Control On Switch Signal
46	PPL	420	Cruise Control Release Signal
47	-	-	Not Used
48	DK GRN	1049	Class 2 Serial Data
49	DK GRN/WHT	459	A/C Clutch Relay Control
50	BRN/WHT	419	MIL Control
51-54	-	-	Not Used
55	TAN	2501	CAN Serial Data Low
56	TAN	1274	5-Volt Reference
57	TAN/WHT	1669	HO2S Low Reference Sensor 1
58	DK GRN	500	Accessory Voltage
59	-	-	Not Used
60	DK BLU	1161	APP Sensor Signal 1
61-64	-	-	Not Used