Engine Control Module (ECM) Connector End Views

WARNING: This page is about a different car, the 2006 Buick LaCrosse and 2006 Buick Allure. 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		OEM: 1 928 403 379 (Bosch) 10774745 (Delphi) Service: See Catalog 64-Way F (BK)
Pin	Wire Color	Circuit No.	Function
1	TN	407	KS Low Reference Bank 2
2	-	-	Not Used
3	L-GN	5278	HO2S Input Pump Current Sensor 1
4	OG	5275	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	CKP Sensor Signal
11	-	-	Not Used
12	OG/BK	5272	CMP Actuator Solenoid Control - Intake Bank 2
13	L-GN	5282	CMP Actuator Solenoid Control - Exhaust Bank 1
14	-	-	Not Used
15	BN	582	TAC Motor Control - 2
16	GY/WH	3113	HO2S Heater Low Control Sensor 1
17	GY	1716	KS Low Reference Bank 1
18	-	-	Not Used
19	PU/WH	1665	HO2S High Signal
20	D- GN	5273	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	Actuator Solenoid Control - Intake Bank 1
30	WH/BK	5283	Actuator Solenoid Control - Exhaust Bank 2
31	YE	581	TAC Motor Control - 1
32	-	-	Not Used
33	D-BU	496	KS Signal Bank 1
34	-	-	Not Used
35	WH	5279	HO2S Pump Current
36	PU	5274	CMP Sensor Signal - Exhaust Bank 2
37	BN	1174	Oil Level Switch Signal
38	D-GN/WH	357	Oil Temperature Sensor Signal
39	TN	2752	Low Reference
40	TN/BK	231	Engine Oil Pressure Switch Signal
41	D-GN	2125	Ignition Control 5
42	PU	2121	Ignition Control 1
43	OG	225	Generator Turn On Signal
44	-	-	Not Used
45	L-BU/BK	844	Fuel Injector 4 Control
46	PK/BK	1746	Fuel Injector 3 Control
47	TN/WH	845	Fuel Injector 5 Control
48	D-GN/WH	428	EVAP Canister Purge Solenoid Valve Control
49	GY/BK	1798	Ground
50	L-BU	1876	KS Signal Bank 2
51	-	-	Not Used
52	TN	1664	HO2S Low Signal
53	YE	5276	CMP Sensor Signal Intake Bank 2
54	GY	2701	5-Volt Reference
55	D-GN	485	TP Sensor 1 Signal
56	L-GN/BK	5266	MAP Sensor Signal
57	GY	705	5-Volt Reference
58	L-BU	2123	Ignition Control 3
59	PU/WH	5024	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		OEM: 1 928 403 514 (Bosch) 12186705 (Delphi) Service: See Catalog 64-Way F (BK)
Pin	Wire Color	Circuit No.	Function
1	PK	39	Ignition 1 Voltage
2	BK/WH	3122	HO2S Heater Low Control Sensor 2
3	PK	439	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	17	Stop Lamp Switch Signal
11	TN	472	IAT Sensor Signal
12	D-GN	890	Fuel Tank Pressure Sensor Signal
13-14	-	-	Not Used
15	OG/BK	463	Requested Torque Signal
16	-	-	Not Used
17	PK	39	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
23	D-BU	6105	High Speed GMLAN Serial Data Bus +
24	BN	5069	Main Relay Control
25	BK	2759	Low Reference
26	BK	2760	Low Reference
27-28	-	-	Not Used
29	PU	3120	HO2S High Signal
30-31	-	-	Not Used
32	OG/BK	1786	Park/Neutral Signal
33	WH	1310	EVAP Canister Vent Solenoid Control
34	-	-	Not Used
35	YE/BK	625	Starter Enable Relay Control
36	OG	540	Battery Positive Voltage
37	TN/BK	464	Delivered Torque Signal
38	-	-	Not Used
39	GY	2709	5-Volt Reference
40	BN	1271	Low Reference
41	-	-	Not Used
42	PU	1589	Fuel Level Sensor Signal
43	YE	492	MAF Sensor Signal
44	L-BU	1162	APP Sensor 2 Signal
45-47	-	-	Not Used
48	D-GN	1049	ECM Class 2 Serial Data
49	D-GN/WH	459	A/C Compressor Clutch Relay Control
50	BN/WH	419	MIL Control
51-54	-	-	Not Used
55	L-BU	6106	High Speed GMLAN Serial Data Bus -
56	TN	1274	5-Volt Reference
57	TN/WH	3121	HO2S Low Signal
58	BN	1141	Ignition 3 Voltage
59	GY	1884	Cruise Control Set/Coast and Resume/Accelerate Switch Signal
60	D-BU	1161	APP Sensor 1 Signal
61-64	-	-	Not Used