Engine Control Module (ECM) Connector End Views

WARNING: This page is about a different car, the 2004 Buick Rendezvous. However, it is still accessible from the selected car via links, so may be relevant.

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