Engine Control Module (ECM) X2 (L61)

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) X2 (L61) Connector End View

Courtesy of GENERAL MOTORS CORP.

Pin	Wire	Circuit	Function
1	-	-	Not Used
2	0.35 BN/WH	6331	AIR Solenoid Signal (NU6)
3	0.5 PU	421	AIR Solenoid Relay Control (NU6)
4	0.35 TN	2761	Low Reference
5	0.5 PU	574	Low Reference
6	0.35 TN	1744	Fuel Injector (1) Control
7	0.35 PK/BK	1746	Fuel Injector (3) Control
8	0.35 L-BU/BK	844	Fuel Injector (4) Control
9	0.35 BN	2129	Low Reference
10	0.35 L-GN/BK	1745	Fuel Injector (2) Control
11-12	-	-	Not Used
13	0.35 GY/BK	2704	5-Volt Reference 1
14-15	-	-	Not Used
16	0.5 YE	581	TAC Motor Control (1)
17-19	-	-	Not Used
20	0.5 TN	5301	Low Reference
21	-	-	Not Used
22	0.35 PU	2121	Ignition Control (1)
23	0.35 L-BU	2123	Ignition Control (3)
24	0.35 D-GN/WH	2124	Ignition Control (4)
25	-	-	Not Used
26	0.35 OG/WH	2122	Ignition Control (2)
27-29	-	-	Not Used
30	0.35 D-GN/WH	428	EVAP Canister Purge Solenoid Control
31	0.35 OG	225	Generator Turn On Signal
32	0.5 BN	582	TAC Motor Control (2)
33	0.5 D-BU	5300	5-Volt Reference 1
34	-	-	Not Used
35	0.5 GY	6255	5-Volt Reference 1
36	-	-	Not Used
37	0.5 PU/WH	3110	Heated Oxygen Sensor High Signal Sensor 1
38	0.5 PU	3120	Heated Oxygen Sensor High Signal Sensor 2
39	0.5 L-GN	432	Manifold Absolute Pressure Sensor Signal
40	0.5 TN	2752	Low Reference
41	0.5 PU/WH	6256	Low Reference
42	0.35 TN	2760	Low Reference
43	0.35 GY/WH	23	Generator Field Duty Cycle Signal
44	-	-	Not Used
45	0.5 YE	573	Crankshaft Position Sensor Signal
46	0.5 OG	5275	CMP Sensor Signal
47	-	-	Not Used
48	0.5 TN/WH	3111	Heated Oxygen Sensor Low Signal Sensor 1
49	0.5 OG/BK	469	Low Reference
50	0.5 GY	1716	Knock Sensor Signal
51	0.5 D-BU	496	Knock Sensor Signal
52	-	-	Not Used
53	0.5 GY	2701	5-Volt Reference 2
54	0.5 L-GN	2867	5-Volt Reference 2
55	0.5 WH	6452	5-Volt Reference 1 (NU6)
56	-	-	Not Used
57	0.5 D-GN	485	Throttle Position Sensor (1) Signal
58	0.35 YE	410	Engine Coolant Temperature Sensor Signal
59	0.5 PU	486	Throttle Position Sensor (2) Signal
60-63	-	-	Not Used
64	0.35 TN	407	Low Reference (NU6)
65	0.5 GY/WH	3113	Heated Oxygen Sensor Heater Low Control Sensor 1
66	0.5 GY/WH	3122	Heated Oxygen Sensor Heater Low Control Sensor 2
67	0.35 TN/BK	231	Oil Pressure Switch Signal
68	0.5 TN/WH	3121	Heated Oxygen Sensor Low Signal Sensor 2
69-72	-	-	Not Used
73	2 BK/WH	451	Signal Ground

Connector Part Information

OEM: 13577506
Service: See Catalog
Description: 73-Way F MX 123 Series Sealed (GY)

Terminal Part Information

Pins: 73
Terminal/Tray: See Terminal Repair Kit
Core/Insulation Crimp: See Terminal Repair Kit
Release Tool/Test Probe: See Terminal Repair Kit

Pins: 5, 9, 13, 20, 22-24, 26, 30-31, 33, 35, 39, 41-43, 45-46, 49-51, 54, 58, 67
Terminal/Tray: 33467-0005/23
Core/Insulation Crimp: C
Release Tool/Test Probe: J-38125-213/J-35616-64B (L-BU)

Pins: 6-8, 10, 16, 32, 37-38, 40, 48, 53, 57, 59, 65-66, 68
Terminal/Tray: 33467-0003/23
Core/Insulation Crimp: C
Release Tool/Test Probe: J-38125-213/J-35616-64B (L-BU)