Engine Control Module (ECM) C2

Fig 1: ECM C2 Connector

Courtesy of GENERAL MOTORS CORP.

Engine Control Module (ECM) Connector End Views

Connector Part Information

OEM: 15471385
Service: 88953274
Description: 73-Way F Micro-Pack 64 Series (BU)

Terminal Part Information

Pins:
Terminal:
Core/Insulation Crimp:
Release Tool/Test Probe:

Engine Control Module (ECM) C2

Pin	Wire Color	Circuit No.	Function
1-2	-	-	Not Used
3	YE	581	Throttle Actuator Control Open
4	-	-	Not Used
5	BN	582	Throttle Actuator Control Close
6-9	-	-	Not Used
10	TN	1744	Fuel Injector Control (1)
11	PK/BK	1746	Fuel Injector Control (3)
12	L-BU/BK	844	Fuel Injector Control (4)
13	L-GN/BK	1745	Fuel Injector Control (2)
14	-	-	Not Used
15	D-GN/WH	428	EVAP Canister Purge Solenoid Control
16	-	-	Not Used
17	TN/WH	1423	Heated Oxygen Sensor Heater Low Control Bank 1 Sensor (2)
18	YE	400	Vehicle Speed Sensor Signal (w/M86)
19	PU	401	Vehicle Speed Sensor Low Reference (w/M86)
20-23	-	-	Not Used
24	GY	2701	Throttle Position Sensor 5-Volt Reference
25	GY	2704	Manifold Absolute Pressure Sensor 5-Volt Reference
26	L-BU/BK	1688	5-Volt Reference
27	-	-	Not Used
28	GY	2700	A/C Pressure Sensor 5-Volt Reference
29	TN/WH	1704	Sensor Low Reference
30	-	-	Not Used
31	TN	2752	Throttle Position Sensor Low Reference
32-33	-	-	Not Used
34	PK/BK	5290	Engine Main Relay Fused Control (1)
35	-	-	Not Used
36	PU	486	Throttle Position Sensor Signal (2)
37	-	-	Not Used
38	TN	2760	Intake Air Temperature Sensor Low Reference
39	-	-	Not Used
40	OG/BK	469	Manifold Absolute Pressure Sensor Low Reference
41	PU/WH	3110	Heated Oxygen Sensor High Signal Bank 1 Sensor 1
42	TN/WH	3111	Heated Oxygen Sensor Low Signal Bank 1 Sensor 1
43	PU/WH	1668	Heated Oxygen Sensor High Signal Bank 1 Sensor 2
44	TN/WH	1669	Heated Oxygen Sensor Low Signal Bank 1 Sensor 2
45-46	-	-	Not Used
47	D-GN	335	Low Speed Cooling Fan Relay Control
48	TN/BK	231	Oil Pressure Switch Signal
49	OG/BK	380	A/C Refrigerant Pressure Sensor Signal
50	YE	410	Engine Coolant Temperature Sensor Signal
51	GY	23	Generator Field Duty Cycle Signal
52	YE	492	Mass Air Flow Sensor Signal
53	GY/WH	3113	Heated Oxygen Sensor Heater Low Control Bank 1 Sensor (1)
54	WH	423	Ignition Control Timing Control (1)
55	OG	406	Ignition Control Timing Control (2)
56-57	-	-	Not Used
58	D-GN	485	Throttle Position Sensor Signal (1)
59	BK/WH	2751	Signal Ground
60	-	-	Not Used
61	TN	2761	Coolant Temperature Sensor Low Reference
62	L-GN	432	Manifold Absolute Pressure Sensor Signal
63	OG	225	Generator Turn On Signal
64	TN/BK	2500	High Speed GMLAN Serial Data (+)
65	TN	2501	High Speed GMLAN Serial Data (-)
66	YE	573	Crankshaft Position Sensor Signal (1)
67	PU	574	Crankshaft Position Sensor Low Reference (1)
68	TN	472	Intake Air Temperature Sensor Signal
69	-	-	Not Used
70	BN/WH	633	Camshaft Position Sensor Signal
71	GY	1716	Knock Sensor Low Reference (1)
72	D-BU	496	Knock Sensor Signal (1)
73	BK/WH	451	Signal Ground