Engine Control Module (ECM) X1 (LLT)

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

Courtesy of GENERAL MOTORS CORP.

Engine Control Module (ECM) X1 (LLT)

Pin	Wire	Circuit	Function
1	0.5 L-GN	5282	Camshaft Phaser Exhaust Solenoid (1)
2	0.5 PU	5284	Camshaft Phaser Intake Solenoid (1)
3	1 PU/WH	4906	Direct Fuel Injector (DFI) High Voltage Cylinder 6
4	1 PU	4806	Direct Fuel Injector (DFI) High Voltage Control Cylinder 6
5	1 YE	7301	High Pressure Fuel Pump Actuator High Control
6	0.5 D-GN/WH	428	EVAP Canister Purge Solenoid Control
7	0.5 OG	5275	Camshaft Position Intake Sensor (1)
8	-	-	Not Used
9	0.5 PU	5274	Camshaft Position Exhaust Sensor (2)
10	0.5 OG	225	Generator Turn On Signal
11-14	-	-	Not Used
15	0.5 GY	705	5-Volt Reference 2
16	-	-	Not Used
17	0.5 TN/BK	231	Oil Pressure Switch Signal
18	0.35 BN	7448	Vacuum Assist Pump Relay Coil Control
19-23	-	-	Not Used
24	0.75 YE	581	TAC Motor Control - 1
25	0.5 WH/BK	5283	Camshaft Phaser Exhaust Solenoid (2)
26	1 D-GN	4803	Direct Fuel Injector (DFI) High Voltage Control Cylinder 3
27	1 D-GN/WH	4903	Direct Fuel Injector (DFI) High Voltage Cylinder 3
28	1 L-GN	4805	Direct Fuel Injector (DFI) High Voltage Control Cylinder 5
29	1 L-GN/WH	4905	Direct Fuel Injector (DFI) High Voltage Cylinder 5
30	0.5 GY	23	Generator Field Duty Cycle Signal
31-32	-	-	Not Used
33	0.5 YE	5276	Camshaft Position Intake Sensor (2)
34	0.5 D-GN	5273	Camshaft Position Exhaust Sensor (1)
35	0.5 YE	573	CKP Sensor Signal
36	0.5 YE	2918	FRP Sensor Signal
37	-	-	Not Used
38	0.5 GY	598	5-Volt Reference 1
39	0.5 GY	2701	5-Volt Reference 3
40	-	-	Not Used
41	0.5 TN	552	Low Reference
42	0.5 TN	808	Low Reference
43	-	-	Not Used
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	0.5 OG/BK	5272	Camshaft Phaser Intake Solenoid (2)
50	1 L-BU	4804	Direct Fuel Injector (DFI) High Voltage Control Cylinder 4
51	1 BN	4801	Direct Fuel Injector (DFI) High Voltage Control Cylinder 1
52	1 D-BU	4802	Direct Fuel Injector (DFI) High Voltage Control Cylinder 2
53	1 D-BU/WH	4902	Direct Fuel Injector (DFI) High Voltage Cylinder 2
54	0.5 BN/WH	419	MIL Control
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	Knock Sensor 2 Signal
61	-	-	Not Used
62-63	-	-	Not Used
64	0.5 TN	407	Low Reference
65-66	-	-	Not Used
67	0.5 TN/WH	3111	HO2S Low Signal (Bank 1 Sensor 1)
68-69	-	-	Not Used
70	0.5 PU/WH	3210	HO2S High Signal (Bank 2 Sensor 1)
71	-	-	Not Used
72	0.5 L-GN	3212	HO2S Heater Low Control Bank 2 Sensor 1
73	1 PU	7300	High Pressure Fuel Pump Actuator Low Control
74	1 L-BU/WH	4904	Direct Fuel Injector (DFI) High Voltage Cylinder 4
75	1 BN/WH	4901	Direct Fuel Injector (DFI) High Voltage Cylinder 1
76	0.5 PK/BK	5291	Ignition Voltage
77	0.5 PK/BK	5292	Ignition Voltage
78	-	-	Not Used
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	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 1 Sensor 1)
94-95	-	-	Not Used
96	0.5 GY/WH	3113	HO2S Heater Low Control Bank 1 Sensor 1

Connector Part Information  OEM: 1928404927 Service: 19153157 Description: 96-Way F 1.2 Series Sealed (BK)

Terminal Part Information  Terminal/Tray: 1928498135/19 Core/Insulation Crimp: Pins 1,2, 6, 7, 9, 10, 14, 15, 18, 24, 25, 30, 33-36, 38-46, 48, 49, 55-57, 59-61, 67, 70, 72, 73, 76, 77, 79-84, 88-90, 92, 93, 96 - J/J Core/Insulation Crimp: Pins 3-5, 26-29, 50-53, 74, 75 - K/K Release Tool/Test Probe: J-38125-213/J-35616-64B (L-BU)