Engine Control Module (ECM) - X2

Fig 1: Engine Control Module (ECM) - X2 Connector End View

Courtesy of GENERAL MOTORS CORP.

Pin	Wire	Circuit	Function
1	0.5 PU	2121	IC1 Control
2	0.5 TN/WH	3111	H02S Low Reference Bank 1 Sensor 1
3	0.5 PU/WH	3110	HO2S Reference Voltage Bank 1 Sensor 1
4	0.5 PU	3120	H02S Reference Voltage Bank 1 Sensor 2
5	0.5 TN/WH	3121	H02S Low Reference Bank 1 Sensor 2
6	0.35 L-BU	1876	KS 2 Signal
7	0.35 GY	2303	KS 2 Signal
8	0.35 D-BU	496	KS 1 Signal
9	0.35 GY	1716	KS 1 Signal
10	-	-	Not Used
11	0.5 YE	581	TAC Motor Control - 1
12	0.5 BN	582	TAC Motor Control - 2
13	0.5 PK	439	Ignition 1 Voltage (LC3)
13	0.35 PK	439	Ignition 1 Voltage (LH2)
14	0.35 PK/BK	6395	CMP Actuator Solenoid Control Bank 1 Intake
15	0.5 TN/BK	6397	CMP Actuator Solenoid Control Bank 2 Intake
16	0.35 D-BU/WH	878	Fuel Injector 8 Control
17	0.5 OG/WH	2122	IC 2 Control
18	0.5 L-BU/WH	2126	IC 6 Control
19	0.5 BN/WH	2130	Low Reference
20	0.35 PU	6267	Low Reference
21	0.35 TN	6268	Low Reference
22	0.35 WH	6269	Low Reference
23	0.35 BN	6266	Low Reference
24	0.35 BK	2755	Low Reference
25	0.35 D-GN	7125	Low Reference (LC3)
26	-	-	Not Used
27	0.35 GY/BK	6272	Low Reference
28	0.5 PK	439	Ignition 1 Voltage
29	0.35 TN	2752	Low Reference
30	0.5 BN/WH	6754	Low Reference
31	0.5 D-BU/WH	6756	Low Reference
32	0.35 PK/BK	1746	Fuel Injector 3 Control
33	0.5 OG	2127	IC 7 Control
34	0.5 D-GN	2125	IC 5 Control
35	0.5 BN	2129	Low Reference
36	0.35 D-GN	6457	5-Volt Reference - 1
37	0.35 OG	6260	5-Volt Reference - 1
38	0.35 PK	6261	5-Volt Reference - 1
39	0.35 D-BU	6259	5-Volt Reference - 1
40	0.35 GY	2705	5-Volt Reference - 1
41	0.35 YE/BK	7124	5-Volt Reference - 2 (LC3)
42	0.35 TN	2760	Low Reference
43	0.35 PU/WH	6270	5-Volt Reference - 2
44	0.35 GY	2701	5-Volt Reference - 2
45	0.35 BN	6273	Low Reference (LC3)
46	0.5 BN	6753	Low Reference
47	0.5 D-BU	6755	Low Reference
48	0.35 L-GN/BK	1745	Fuel Injector 2 Control
49	0.35 TN/WH	845	Fuel Injector 5 Control
50	0.5 WH/BK	6396	CMP Actuator Solenoid Control Bank 1 Exhaust
51	0.5 GY/BK	6394	CMP Actuator Solenoid Control Bank 2 Exhaust
52	0.35 L-BU/BK	844	Fuel Injector 4 Control
53	0.5 L-BU	2123	IC 3 Control
54	0.5 D-GN/WH	2124	IC 4 Control
55	0.5 PU/WH	2128	IC 8 Control
56	0.35 D-GN/WH	6264	CMP Sensor Signal Bank 1 Exhaust
57	0.35 OG/BK	6263	CMP Sensor Signal Bank 2 Intake
58	0.35 PK/BK	6262	CMP Sensor Signal Bank 2 Exhaust
59	0.35 D-BU/WH	6265	CMP Sensor Signal Bank 1 Intake
60	0.35 TN/WH	331	Oil Pressure Sensor Signal
61	-	-	Not Used
62	0.35 TN/BK	472	IAT Sensor Signal
63	0.35 WH/BK	6271	CKP Sensor Signal
64	0.35 D-GN	485	TP Sensor 1 Signal
65	0.35 D-GN/WH	357	Engine Oil Temperature Sensor (LC3)
66	0.35 PU	486	TP Sensor 2 Signal
67	0.35 YE	492	MAF Sensor Signal
68	0.5 GY/WH	3113	H02S Heater Low Control Bank 1 Sensor 1
69	0.5 GY/WH	3122	H02S Heater Low Control Bank 1 Sensor 2
70	0.35 YE/BK	846	Fuel Injector 6 Control
71	0.35 OG/BK	877	Fuel Injector 7 Control
72	0.35 TN	1744	Fuel Injector 1 Control
73	2 BK/WH	451	Ground

Connector Part Information

OEM: 15499466
Service: 88988360
Description: 73-Way F 0.64 2.8 Series, Sealed (BK)

Terminal Part Information

Pins: 1-5, 11-13, 15, 17-19, 28, 30, 31, 33-35, 46, 47, 50, 51, 53-55, 68, 69
Terminal/Tray: 33467-0005/23
Core/Insulation Crimp: J/J
Release Tool/Test Probe: J-38125-213/J-35616-64B (L-BU)

Pins: 6-9, 14, 16, 20-25, 27, 29, 32, 36-45, 48, 49, 52, 56-60, 62-67, 70-72
Terminal/Tray: 33467-0003/23
Core/Insulation Crimp: H/H
Release Tool/Test Probe: J-38125-213/J-35616-64B (L-BU)

Pins: 73
Terminal/Tray: 7116-4152-02/9
Core/Insulation Crimp: 2/5
Release Tool/Test Probe: 12094430/J-35616-35 (VT)