Engine Control Module (ECM) X3 (LAT)

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

Fig 1: Engine Control Module (ECM) X3 (LAT) Connector End View

Courtesy of GENERAL MOTORS CORP.

Pin	Wire	Circuit	Function
1	-	-	Not Used
2	0.35 PK	1224	Transmission Fluid Pressure Switch Signal A
3-20	-	-	Not Used
21	0.35 TN	5514	Low Reference
22	-	-	Not Used
23	0.35 OG/BK	469	Low Reference
24	0.35 TN/BK	6033	Low Reference
25-32	-	-	Not Used
33	0.35 TN	2501	High Speed GMLAN Serial Data Bus-
34	-	-	Not Used
35	0.35 TN	2761	Low Reference
36	-	-	Not Used
37	0.35 GY	2700	5-Volt Reference 2
38	-	-	Not Used
39	0.35 GY	2704	5-Volt Reference 1
40	0.35 GY	6034	5-Volt Reference
41-45	-	-	Not Used
46	0.35 OG/BK	1786	Park/Neutral Signal
47	-	-	Not Used
48	0.35 D-GN/WH	428	EVAP Canister Purge Solenoid Control
49	0.35 D-GN	335	Low Speed Cooling Fan Relay Control
50-52	-	-	Not Used
53	0.35 TN/BK	2500	High Speed GMLAN Serial Data Bus+
54	-	-	Not Used
55	0.35 YE	410	ECT Sensor Signal
56	-	-	Not Used
57	0.35 OG/BK	380	A/C Refrigerant Pressure Sensor Signal
58	-	-	Not Used
59	0.35 L-GN	432	MAP Sensor Signal
60	0.35 YE	2034	Master Cylinder ABS Pressure Sensor Signal
61-64	-	-	Not Used
65	0.35 TN/BK	231	Oil Pressure Switch Signal
66-73	-	-	Not Used

Connector Part Information

OEM: 13588081
Service: See Catalog
Description: 73-Way F Sealed (GY)

Terminal Part Information

Pins: 2, 21, 23, 24, 33, 35, 37, 39, 40, 46, 48, 49, 53, 55, 57, 59, 60, 65
Terminal/Tray: 33467-0003/23
Core/Insulation Crimp: H/H
Release Tool/Test Probe: J-38125-213/J-35616-64B (L-BU)