Engine Control Module (ECM) X2 (except HP2)

Fig 1: Engine Control Module (ECM) X2 (except HP2) Connector End View

Courtesy of GENERAL MOTORS CORP.

Pin	Wire	Circuit	Function
1	-	-	Not Available
2	0.35 PU/WH	6270	5-Volt Reference 2
3	0.35 GY	2701	5-Volt Reference 2
4	-	-	Not Available
5	0.5 BN	582	TAC Motor Control - 2
6	0.5 YE	581	TAC Motor Control - 1
7	-	-	Not Available
8	0.5 D-GN/WH	428	EVAP Canister Purge Solenoid Control
9	0.5 GY	5493	Cylinder Shutoff Solenoid Control (3) (L94, LC9 or LMG)
10	0.5 D-BU	5491	Cylinder Shutoff Solenoid Control (1) (L94, LC9 or LMG)
11	0.5 OG	5494	Cylinder Shutoff Solenoid Control (4) (L94, LC9 or LMG)
12	0.5 GY/WH	3113	HO2S Heater Low Control - Bank 1 Sensor 1
13	0.5 L-GN	3212	HO2S Heater Low Control - Bank 2 Sensor 1
14	0.5 L-GN/BK	5492	Cylinder Shutoff Solenoid Control (2) (L94, LC9 or LMG)
15	-	-	Not Available
16	0.35 PU	5284	Camshaft Actuator Solenoid Control
17	0.5 D-BU/WH	878	Fuel Injector 8 Control
18	0.5 TN/WH	845	Fuel Injector 5 Control
19	0.5 YE/BK	846	Fuel Injector 6 Control
20	0.5 TN	1744	Fuel Injector 1 Control
21	0.5 YE	410	Engine Coolant Temperature (ECT) Sensor Signal
22	0.5 TN	2761	Low Reference
23-25	-	-	Not Available
26	0.8 D-BU	496	Knock Sensor 1 Signal
27	0.8 GY	1716	Low Reference
28	-	-	Not Available
29	0.8 L-BU	1876	Knock Sensor 2 Signal
30	0.8 GY	2303	Low Reference
31	-	-	Not Available
32	0.5 GY	23	Generator Field Duty Cycle Signal
33	-	-	Not Available
34	0.5 BK	2755	Low Reference
35	0.35 TN	2752	Low Reference
36	-	-	Not Available
37	0.5 L-GN/BK	1745	Fuel Injector 2 Control
38	0.5 PK/BK	1746	Fuel Injector 3 Control
39	0.5 L-BU/BK	844	Fuel Injector 4 Control
40	0.5 OG/BK	877	Fuel Injector 7 Control
41	0.5 GY	2705	5-Volt Reference 1
42	-	-	Not Available
43	0.5 GY	2704	5-Volt Reference 1
44	0.35 D-BU	6259	5-Volt Reference 1
45-49	-	-	Not Available
50	0.5 TN/WH	331	Oil Pressure Sensor Signal
51	-	-	Not Available
52	0.35 TN	2199	Low Reference (6.0L)
53	0.5 OG/BK	469	Low Reference
54-55	-	-	Not Available
56	0.5 TN	1664	HO2S Low Signal - Bank 1 Sensor 1
57	0.5 PU/WH	1665	HO2S High Signal - Bank 1 Sensor 1
58	0.5 L-GN	432	Manifold Absolute Pressure (MAP) Sensor Signal
59	0.5 PU	1666	HO2S High Signal - Bank 2 Sensor 1
60	0.5 TN	1667	HO2S Low Signal - Bank 2 Sensor 1
61	0.5 BN	25	Charge Indicator Control/Charge Indicator Signal
62	-	-	Not Available
63	0.35 PU	486	Throttle Position Sensor 2 Signal
64	0.35 D-BU/WH	6265	CMP Sensor Signal
65	0.35 D-GN	485	Throttle Position Sensor 1 Signal
66	0.35 BN	6266	Low Reference
67	-	-	Not Available
68	0.35 WH/BK	6271	Crankshaft Position (CKP) Sensor Signal
69	0.35 GY/BK	6272	Low Reference
70	0.5 PU	2121	Ignition Coil 1 Control
71	0.5 PU/WH	2128	Ignition Coil 8 Control
72	0.5 OG	2127	Ignition Coil 7 Control
73	0.5 OG/WH	2122	Ignition Coil 2 Control
74	0.5 L-BU/WH	2126	Ignition Coil 6 Control
75	0.5 D-GN	2125	Ignition Coil 5 Control
76	0.5 D-GN/WH	2124	Ignition Coil 4 Control
77	0.5 L-BU	2123	Ignition Coil 3 Control
78	0.5 BN	2129	Low Reference
79	0.5 BN/WH	2130	Low Reference
80	-	-	Not Available

Connector Part Information

Harness: Engine
OEM: 13528613 (L94, L9H or LC9)
OEM: 13536319 (L20 or L96)
Service: 19115670
Description: 80-Way F MX123 34566 Series (GY)

Terminal Part Information

Pins: 2, 3, 16, 35, 44, 52, 63-66, 68, 69
Terminated Lead: 13575811
Release Tool: J-38125-213
Diagnostic Test Probe: J-35616-64B (L-BU)
Terminal/Tray: 33467-0003/23
Core/Insulation Crimp: H/H

Pins: 5, 6, 8-14, 17-22, 26, 27, 29, 30, 32, 34, 37-41, 43, 50, 53, 56-61, 70-79
Terminated Lead: 13575575
Release Tool: J-38125-213
Diagnostic Test Probe: J-35616-64B (L-BU)
Terminal/Tray: 33467-0005/23
Core/Insulation Crimp: Pins 5, 6, 8-14, 17-22, 32, 34, 37-41, 43, 50, 53, 56-61, 70-79 - J/J
Core/Insulation Crimp: Pins 26, 27, 29, 30 - K/K