Engine Control Module (ECM) Connector End Views

WARNING: This page is about a different car, the 2005 Buick Rendezvous. However, it is still accessible from the selected car via links, so may be relevant.

Engine Control Module (ECM) C1

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

Engine Control Module (ECM) C2

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