Engine Control Module (ECM) X1 (LLT)

Fig 1: Connector End View Engine Control Module (ECM) X1 (LLT)

Courtesy of GENERAL MOTORS COMPANY

Pin	Wire	Circuit	Function
1	0.75 GN	5282	Camshaft Phaser Exhaust Solenoid
2	0.75 PU	5284	Camshaft Position (CMP) Actuator Solenoid - Intake Bank 1
3	1 PU/WH	4906	Fuel Injector 6 Control
4	1 PU	4806	Low Reference
5	1 YE	7301	High Pressure Fuel Pump Actuator Solenoid Control
6	0.75 D-GN/WH	428	EVAP Canister Purge Solenoid Control
7	0.5 OG	5275	Camshaft Position (CMP) Sensor - Intake Bank 1 Signal
8	-	-	Not Used
9	0.5 PU	5274	Camshaft Position Exhaust Sensor
10	0.5 OG	225	Generator Turn On Signal
11-12	-	-	Not Used
13	0.5 BN/WH	2130	Low Reference
14	0.35 GY	5127	Afterboil Coolant Pump Supply Voltage
15	0.5 GY	705	5-Volt Reference 2
16-17	-	-	Not Used
18	0.35 BN	7448	Vacuum Pump Relay Control
19-23	-	-	Not Used
24	0.75 YE	581	TAC Motor Control - 1
25	0.75 WH/BK	5283	Camshaft Position (CMP) Actuator Solenoid - Exhaust Bank 2
26	1 D-GN	4803	Low Reference
27	1 D-GN/WH	4903	Fuel Injector 3 Control
28	1 L-GN	4805	Low Reference
29	1 L-GN/WH	4905	Fuel Injector 5 Control
30	0.5 GY	23	Generator Field Duty Cycle Signal
31-32	-	-	Not Used
33	0.5 YE	5276	Camshaft Position (CMP) Sensor - Intake Bank 2 Signal
34	0.5 D-GN	5273	Camshaft Position Exhaust Sensor
35	0.5 YE	573	CKP Sensor Signal
36	0.5 YE	2918	Fuel Rail Pressure Sensor Signal
37	-	-	Not Used
38	0.5 GY	2700	5-Volt Reference 3
39	0.5 GY	2701	5-Volt Reference 3
40	0.5 GY	596	5-Volt Reference 1
41	0.5 TN	552	Low Reference
42	0.5 TN	808	Low Reference
43	0.5 TN	470	Low Reference
44	0.5 TN	476	Low Reference
45	0.5 GY	605	5-Volt Reference 3
46	0.5 TN	452	Low Reference
47	-	-	Not Used
48	0.75 BN	582	TAC Motor Control - 2
49	0.75 OG/BK	5272	Camshaft Position (CMP) Sensor - Intake Bank 1 Signal
50	1 L-BU	4804	Low Reference
51	1 BN	4801	Low Reference
52	1 D-BU	4802	Low Reference
53	1 D-BU/WH	4902	Fuel Injector 2 Control
54	0.35 BN	818	Vehicle Speed Signal
55	0.5 PU	2121	IC 1 Control
56	0.5 L-BU	2123	IC 3 Control
57	0.5 D-GN	2125	IC 5 Control
58	-	-	Not Used
59	0.5 D-BU	496	Knock Sensor (1) Signal
60	0.5 GY	2303	Low Reference
61	0.5 TN/WH	331	Oil Pressure Sensor Signal
62-66	-	-	Not Used
67	0.5 TN/WH	3111	HO2S Low Reference (Bank 1 Sensor 1)
68-69	-	-	Not Used
70	0.5 PU/WH	3210	HO2S Reference Voltage (Bank 2 Sensor 1)
71	-	-	Not Used
72	0.75 GN	3212	HO2S Heater Low Control (Bank 2 Sensor 1)
73	1 PU	7300	Low Reference
74	1 L-BU/WH	4904	Fuel Injector 4 Control
75	1 BN/WH	4901	Fuel Injector 1 Control
76	0.8 PK/BK	5291	Ignition 1 Voltage
77	0.8 PK/BK	5292	Ignition 1 Voltage
78	0.5 BN	2129	Low Reference
79	0.5 OG/WH	2122	IC 2 Control
80	0.5 D-GN/WH	2124	IC 4 Control
81	0.5 L-BU/WH	2126	IC 6 Control
82	0.5 YE	410	ECT Sensor Signal
83	0.5 GY	1716	Knock Sensor 1 Signal
84	0.5 L-BU	1876	Knock Sensor 2 Signal
85-87	-	-	Not Used
88	0.5 TN	2752	Low Reference
89	0.5 PU	486	TP Sensor 2 Signal
90	0.5 D-GN/WH	485	TP Sensor 1 Signal
91	-	-	Not Used
92	0.5 PU/WH	3110	HO2S High Signal (Bank 1 Sensor 1)
93	0.5 TN/WH	3211	HO2S Low Signal (Bank 2 Sensor 1)
94-95	-	-	Not Used
96	0.75 GY/WH	3113	HO2S Heater Low Control (Bank 1 Sensor 1)

Connector Part Information

Harness Type: Engine
OEM Connector: 1928404781
Service Connector: 19149311
Description: 96-Way F 120 MAT Series, 280 BDK Series, Sealed (BK) (BK)

Terminal Part Information

Terminated Lead: 13578933
Release Tool: J-38125-213
Diagnostic Test Probe: J-35616-16 (L-GN)
Terminal/Tray: 1928498135/19
Core/Insulation Crimp: Pins -2, 6-7, 9-10, 13, 15, 24-25, 30, 33-36, 38-46, 48-49, 55-57, 59-61, 67, 70, 72, 76-84, 88-90, 92-93, 96 - J/J
Core/Insulation Crimp: Pins 3-5, 26-29, 50-53, 73-75 - K/K
Core/Insulation Crimp: Pins 14, 18, 54 - P/P