Engine Control Module (ECM) - C2 Connector End View

Courtesy of GENERAL MOTORS CORP.
Connector Part Information		OEM: 15430228 Service: See Catalog 73-Way F Micro-Pack 64 Series (BK)
Pin	Wire Color	Circuit No.	Function
1-2	-	-	Not Used
3	D-GN	485	TP Sensor 1 Signal
4	PU	486	TP Sensor 2 Signal
5-7	-	-	Not Used
8	L-GN	432	MAP Sensor Signal
9	-	-	Not Used
10	YE	573	CKP Sensor 1 Signal
11	L-BU	1876	Knock Sensor 2 Signal
12	GY	23	Generator Field Duty Cycle Signal
13	GY	1716	Low Reference
14	L-GN	5282	CMP Actuator Solenoid Control Bank 1 Exhaust
15-16	-	-	Not Used
17	TN	1744	Fuel Injector 1 Control
18	L-GN/BK	1745	Fuel Injector 2 Control
19	D-BU	496	Knock Sensor 1 Signal
20	PK/BK	1746	Fuel Injector 3 Control
21	OG/BK	877	Fuel Injector 7 Control
22	TN/WH	845	Fuel Injector 5 Control
23	YE/BK	846	Fuel Injector 6 Control
24	D-BU/WH	878	Fuel Injector 8 Control
25	D-GN	5273	CMP Sensor Signal Bank 1 Exhaust
26	-	-	Not Used
27	BN/WH	5303	Low Reference
28	GY	2303	Low Reference
29	PU	5284	CMP Actuator Solenoid Control Bank 1 Intake
30	L-BU/BK	844	Fuel Injector 4 Control
31	OG/BK	5272	CMP Actuator Solenoid Control Bank 2 Intake
32	OG	5275	CMP Sensor Signal Bank 1 Intake
33	D-BU	5300	12-Volt Reference
34	WH/BK	5283	CMP Actuator Solenoid Control Bank 2 Exhaust
35	TN	5301	Low Reference
36	OG/BK	469	Low Reference
37	TN	2752	Low Reference
38	TN	2761	Low Reference
39	BN/WH	2130	Low Reference
40	L-BU	5302	12-Volt Reference
41	PU	574	Low Reference
42	BN	2129	Low Reference
43	PU	5274	CMP Sensor Signal Bank 2 Exhaust
44	BN	582	TAC Motor Control - 2
45	GY	5296	Low Reference
46	L-GN	5298	12-Volt Reference
47	BN	5299	Low Reference
48	YE	581	TAC Motor Control - 1
49	YE	5276	CMP Sensor Signal Bank 2 Intake
50	L-GN	1867	12-Volt Reference
51	GY	2701	5-Volt Reference
52-53	-	-	Not Used
54	YE	410	ECT Sensor Signal
55	D-GN/WH	428	EVAP Canister Purge Solenoid Control
56-57	-	-	Not Used
58	PU	2121	IC 1 Control
59	OG/WH	2122	IC 2 Control
60	OG	2127	IC 7 Control
61	L-BU	2123	IC 3 Control
62	D-GN/WH	2124	IC 4 Control
63	PU/WH	2128	IC 8 Control
64	D-GN	2125	IC 5 Control
65	GY	2704	5-Volt Reference
66-67	-	-	Not Used
68	OG	225	Generator Turn On Signal
69	L-BU/WH	2126	IC 6 Control
70	-	-	Not Used
71	YE/BK	5297	12-Volt Reference
72	-	-	Not Used
73	BK/WH	451	Ground