Engine Control Module (ECM) X1 (LNF)

WARNING: This page is about a different car, the 2008 Pontiac G5 and 2008 Chevrolet Cobalt. However, it is still accessible from the selected car via links, so may be relevant.

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

Courtesy of GENERAL MOTORS CORP.

Pin	Wire	Circuit	Function
1	0.35 L-GN	5282	Camshaft Phaser Exhaust Solenoid Control
2	0.5 PU	5284	Camshaft Phaser Intake Solenoid Control
3-4	-	-	Not Used
5	0.35 YE	7301	High Pressure Fuel Pump Actuator High Control
6	0.35 D-GN/WH	428	EVAP Canister Purge Solenoid Control
7	0.5 OG	5275	Camshaft Position Intake Sensor Signal
8-9	-	-	Not Used
10	0.35 OG	225	Generator Turn On Signal
11-12	-	-	Not Used
13	0.35 BN/WH	2130	Low Reference
14	-	-	Not Used
15	0.35 GY	705	5-Volt Reference 2
16	0.35 D-GN	6391	Turbo Bypass Valve Control
17	0.35 TN/BK	231	Oil Pressure Switch Signal
18	0.35 YE	258	Wastegate Solenoid Control
19-23	-	-	Not Used
24	0.5 YE	581	TAC Motor Control - 1
25	0.35 TN	891	Boost Gauge Signal
26	0.35 L-BU	4804	Direct Fuel Injector (DFI) High Voltage Control Cylinder 4
27	0.35 L-BU/WH	4904	Direct Fuel Injector (DFI) High Voltage Supply Cylinder 4
28	0.35 D-BU	4802	Direct Fuel Injector (DFI) High Voltage Control Cylinder 2
29	0.35 D-BU/WH	4902	Direct Fuel Injector (DFI) High Voltage Supply Cylinder 2
30	0.35 GY	23	Generator Field Duty Cycle Signal
31-33	-	-	Not Used
34	0.5 D-GN	5273	Camshaft Position Exhaust Sensor Signal
35	0.35 YE	573	CKP Sensor Signal
36	0.35 YE	2918	FRP Sensor Signal
37	0.5 L-GN	432	MAP Sensor Signal
38	0.35 GY	598	5-Volt Reference 1
39	0.35 GY	2701	5-Volt Reference 3
40	0.35 TN	407	Low Reference
41	0.35 TN	552	Low Reference
42	0.35 TN	808	Low Reference
43	0.35 GY	597	5-Volt Reference
44	0.35 TN	2761	Low Reference
45	0.35 L-GN	2867	5-Volt Reference 3
46	0.35 PU	574	Low Reference
47	-	-	Not Used
48	0.5 BN	582	TAC Motor Control 2
49-50	-	-	Not Used
51	0.35 BN	4801	Direct Fuel Injector (DFI) High Voltage Control Cylinder 1
52	0.35 D-GN	4803	Direct Fuel Injector (DFI) High Voltage Control Cylinder 3
53	0.35 D-GN/WH	4903	Direct Fuel Injector (DFI) High Voltage Supply Cylinder 3
54	0.35 BN/WH	419	MIL Control
55	0.35 PU	2121	IC 1 Control
56	0.35 D-GN/WH	2124	IC 4 Control
57-58	-	-	Not Used
59	0.5 D-BU	496	KS 1 Signal
60	0.35 GY	2303	KS 2 Signal
61-63	-	-	Not Used
64	0.5 OG/BK	469	Low Reference
65	-	-	Not Used
66	0.35 PU	7330	Pre-Throttle Air Temp and Press (TMAP) Air Pressure Signal
67	0.5 TN/WH	3111	Heated Oxygen Sensor Low Signal Sensor 1
68	0.35 WH	5279	Heated Oxygen Sensor Pump Current Sensor 1
69-72	-	-	Not Used
73	0.35 PU	7300	High Pressure Fuel Pump Actuator Low Control
74	-	-	Not Used
75	0.35 BN/WH	4901	Direct Fuel Injector (DFI) High Voltage Supply Cylinder 1
76-77	-	-	Not Used
78	0.35 BN	2129	Low Reference
79	0.35 L-BU	2123	IC 3 Control
80	0.35 OG/WH	2122	IC 2 Control
81	-	-	Not Used
82	0.35 YE	410	ECT Sensor Signal
83	0.5 GY	1716	KS 1 Signal
84	0.35 L-BU	1876	KS 2 Signal
85	-	-	Not Used
86	0.35 L-BU	7329	Pre-Throttle Air Temp and Press (TMAP) Temperature Signal
87	-	-	Not Used
88	0.35 TN	2752	Low Reference
89	0.35 PU	486	TP Sensor 2 Signal
90	0.35 D-GN	485	TP Sensor 1 Signal
91	0.35 L-GN	5278	Heated Oxygen Sensor Input Pump Current Sensor 1
92	0.5 PU/WH	3110	Heated Oxygen Sensor High Signal Sensor 1
93-94	-	-	Not Used
95	0.5 GY	2704	5-Volt Reference 1
96	0.5 GY/WH	3113	HO2S Heater Low Control - Sensor 1

Connector Part Information

OEM: 15438366
Service: 88988373
Description: 96-Way Sealed (BK)

Terminal Part Information

Terminal/Tray: See Terminal Repair Kit
Core/Insulation Crimp: See Terminal Repair Kit
Release Tool/Test Probe: See Terminal Repair Kit