Engine Control Module (ECM) X1 (LLT)

WARNING: This page is about a different car, the 2009 Saturn Outlook, 2009 GMC Acadia, 2009 Chevrolet Traverse, and 2009 Buick Enclave. However, it is still accessible from the selected car via links, so may be relevant.

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

Courtesy of GENERAL MOTORS CORP.

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)