Engine Control Module (ECM) X2 (LH2)

WARNING: This page is about a different car, the 2008 Cadillac SRX. However, it is still accessible from the selected car via links, so may be relevant.

Fig 1: Engine Control Module (ECM) X2 (LH2) Connector End View

Courtesy of GENERAL MOTORS CORP.

Pin	Wire	Circuit	Function
1	0.35 PU	2121	IC 1 Control
2	0.5 TN/WH	3111	Low Reference (Bank 1 Sensor 1)
3	0.5 PU/WH	3110	Reference Voltage (Bank 1 Sensor 1)
4	0.75 PU	3120	Reference Voltage (Bank 1 Sensor 2)
5	0.75 TN/WH	3121	Low Reference (Bank 1 Sensor 2)
6	0.35 L-BU	1876	Knock Sensor 2 Signal
7	0.35 GY	2303	Knock Sensor 2 Signal
8	0.35 D-BU	496	Knock Sensor 1 Signal
9	0.35 GY	1716	Knock Sensor 1 Signal
10	-	-	Not Used
11	0.35 YE	581	TAC Motor Control - 1
12	0.35 BN	582	TAC Motor Control - 2
13	0.5 PK/BK	5290	Ignition Voltage
14	0.35 PK/BK	6395	Cam Phaser 2 Control
15	0.35 TN/BK	6397	Cam Phaser 4 Control
16	0.5 D-BU/WH	878	Fuel Injector 8 Control
17	0.35 OG/WH	2122	IC 2 Control
18	0.35 L-BU/WH	2126	IC 6 Control
19	0.35 BN/WH	2130	Low Reference
20	0.35 PU	6267	Camshaft CAM X Ground
21	0.35 TN	6268	Camshaft CAM Y Ground
22	0.35 WH	6269	Camshaft CAM Z Ground
23	0.35 BN	6266	Camshaft CAM W Ground
24	0.35 BK	2755	Low Reference
25-26	-	-	Not Used
27	0.35 GY/BK	6272	Crankshaft 60X Sensor Low Reference
28	0.5 PK/BK	5290	Ignition Voltage
29	0.35 TN	2752	Low Reference
30	0.5 BN/WH	6754	Cam Phaser X Return Low Reference
31	0.5 D-BU/WH	6756	Cam Phaser Z Return Low Reference
32	0.5 L-BU/BK	1746	Fuel Injector 3 Control
33	OG	2127	IC 7 Control
34	0.35 D-GN	2125	IC 5 Control
35	0.35 BN	2129	Low Reference
36	0.35 D-GN	6457	Camshaft CAM X Supply Voltage
37	0.35 OG	6260	Camshaft CAM Y Supply Voltage
38	0.35 PK	6261	Camshaft CAM Z Supply Voltage
39	0.35 D-BU	6259	Camshaft CAM W Supply Voltage
40	0.35 GY	2705	5-Volt Reference
41	-	-	Not Used
42	0.35 TN	2760	Low Reference
43	0.35 PU/WH	6270	Crankshaft 60X Sensor Voltage
44	0.35 GY	2701	5-Volt Reference
45	-	-	Not Used
46	0.5 BN	6753	Cam Phaser W Return Low Reference
47	0.5 D-BU	6755	Cam Phaser Y Return Low Reference
48	0.5 L-GN/BK	1745	Fuel Injector 2 Control
49	0.5 TN/WH	845	Fuel Injector 5 Control
50	0.5 WH/BK	6396	Cam Phaser 3 Control
51	0.5 GY/BK	6394	Cam Phaser Control
52	0.5 L-BU/BK	844	Fuel Injector 4 Control
53	0.35 L-BU	2123	IC 3 Control
54	0.35 D-GN/WH	2124	IC 4 Control
55	0.35 PU/WH	2128	IC 8 Control
56	0.35 D-GN/WH	6264	Camshaft CAM X Signal
57	0.35 OG/BK	6263	Camshaft CAM Y Signal
58	0.35 PK/BK	6262	Camshaft CAM Z Signal
59	0.35 D-BU/WH	6265	Camshaft CAM W Signal
60	0.35 TN/WH	331	Oil Pressure Sensor Signal
61	-	-	Not Used
62	0.35 TN	472	IAT Sensor Signal
63	0.35 WH/BK	6271	Crankshaft 60X Sensor Signal
64	0.35 D-GN	485	TP Sensor 1 Signal
65	-	-	Not Used
66	0.35 PU	486	TP Sensor 2 Signal
67	0.35 YE	492	MAF Sensor Signal
68	0.75 GY/WH	3113	HO2S Heater Low Control - Bank 1 Sensor 1
69	0.75 GY/WH	3122	HO2S Heater Low Control - Bank 2 Sensor 1
70	0.5 YE/BK	846	Fuel Injector 6 Control
71	0.5 OG/BK	877	Fuel Injector 7 Control
72	0.5 TN	1744	Fuel Injector 1 Control
73	3 BK	1550	Ground

Connector Part Information

OEM: 12582677
Service: 88988931
Description: 73-Way F Receptacle 0.64 2.8 Sealed (GY)

Terminal Part Information

Pins: 73
Terminal/Tray: 7116-4152-02/9
Core/Insulation Crimp: A/5
Release Tool/Test Probe: 12094430/J-35616-35 (VT)

Pins: 1, 6-9, 17-24, 27, 29, 33-40, 42-44, 53-60, 62-64, 66-67
Terminal/Tray: 33467-0003/23
Core/Insulation Crimp: H/H
Release Tool/Test Probe: J-38125-213/J-35616-64B (L-BU)

Pins: 2-5, 11-16, 28, 30-32, 46-52, 69-72
Terminal/Tray: 33467-0005/23
Core/Insulation Crimp: Pins 2-3, 11-16, 28, 30-32, 46-52, 70-72 - J/J
Core/Insulation Crimp: Pins 4-5, 68-69 - K/K
Release Tool/Test Probe: J-38125-213/J-35616-64B (L-BU)