Engine Control Module (ECM) C2

Fig 1: Engine Control Module (ECM) C2 Connector End View

Courtesy of GENERAL MOTORS CORP.

Engine Control Module (ECM) C2 Connector Parts Information

Connector Part Information

OEM: 15499466
Service: See Catalog
Description: 73-Way F 0.64 2.8 Series, Sealed (BK)

Terminal Part Information

Pins: 2 - 72
Terminal/Tray: 15359541/4
Core/Insulation Crimp: M/M
Release Tool/Test Probe: 15381651-2/J-35616-64B (L-BU)

Pins: 73
Terminal/Tray: 15304720/19
Core/Insulation Crimp: 4/5
Release Tool/Test Probe: 15315247/J-35616-4A (PU)

Engine Control Module (ECM) C2 Connector Terminal Identification

Pin	Wire Color	Circuit No.	Function
1	PU	2121	IC 1 Control
2	TN	1664	HO2S Low Signal Sensor 1
3	PU/WH	1665	HO2S High Signal Sensor 1
4	PU/WH	1668	HO2S High Signal Sensor 2
5	TN/WH	1669	HO2S Low Signal Sensor 2
6	L-BU	1876	Knock 2 Sensor Signal
7	GY	2303	Knock 2 Sensor Signal
8	D-BU	496	Knock 1 Sensor Signal
9	GY	1716	Knock 1 Sensor Signal
10	-	-	Not Used
11	YE	581	TAC Motor Control - 1
12	BN	582	TAC Motor Control - 2
13	PK/BK	5290	Ignition 1 Voltage
14-15	-	-	Not Used
16	PK/BK	1746	Fuel Injector 3 Control
17	PU/WH	2128	IC 8 Control
18	D-GN/WH	2124	IC 4 Control
19	BN/WH	2130	Low Reference
20-22	-	-	Not Used
23	PK/BK	632	Low Reference
24	BK	2755	Low Reference
25-26	-	-	Not Used
27	YE/BK	1868	Low Reference
28	-	-	Not Used
29	TN	2752	Low Reference
30-31	-	-	Not Used
32	L-GN/BK	1745	Fuel Injector 2 Control
33	OG	2127	IC 7 Control
34	D-GN	2125	IC 5 Control
35	BN	2129	Low Reference
36-38	-	-	Not Used
39	OG	631	12-Volt Reference
40	GY	2705	5-Volt Reference 1
41	-	-	Not Used
42	TN	2760	Low Reference
43	L-GN	1867	12-Volt Reference
44	GY	2701	5-Volt Reference 2
45-47	-	-	Not Used
48	D-BU/WH	878	Fuel Injector 8 Control
49	TN/WH	845	Fuel Injector 5 Control
50-51	-	-	Not Used
52	YE/BK	846	Fuel Injector 6 Control
53	OG/WH	2122	IC 2 Control
54	L-BU/WH	2126	IC 6 Control
55	L-BU	2123	IC 3 Control
56-58	-	-	Not Used
59	BN/WH	633	CMP Sensor Signal
60	TN/WH	331	Oil Pressure Sensor Signal
61	-	-	Not Used
62	TN/BK	472	IAT Sensor Signal
63	D-BU/WH	1869	CKP Sensor Signal
64	D-GN	485	TP Sensor 1 Signal
65	-	-	Not Used
66	PU	486	TP Sensor 2 Signal
67	YE	492	MAF Sensor Signal
68	GY/WH	3113	HO2S Heater Low Control Sensor 1
69	BN	2391	HO2S Heater Low Control Sensor 2
70	L-BU/BK	844	Fuel Injector 4 Control
71	OG/BK	877	Fuel Injector 7 Control
72	TN	1744	Fuel Injector 1 Control
73	BK/WH	451	Ground