Engine Control Module (ECM) Connector End View C1

Fig 1: ECM C1 Connector End View

Courtesy of GENERAL MOTORS CORP.

ECM C1 Connector Part Information

Connector Part Information  OEM: 13542537 Service: See Catalog Description: 41-Way F Receptacle 0.64 2.8 Sealed (BK)

Terminal Part Information  Pins: 73 Terminal/Tray: 7116-4152-02/9 Core/Insulation Crimp: 2/5 Release Tool/Test Probe: 12094430/J-35616-35 (VT) Pins: 1, 9, 12, 13, 16, 17, 18, 19, 20, 23, 24, 27, 28, 29, 30, 31, 32, 33, 34, 36, 48, 50, 52, 56, 58, 59, 60, 61, 63, 64, 65, 68 Terminal/Tray: 33467-0003/23 Core/Insulation Crimp: H/H Release Tool/Test Probe: J-38125-213/J-35616-64B (L-BU) Pins: 10, 11, 47, 49, 69, 37, 38, 41 Terminal/Tray: 33467-0005/23 Core/Insulation Crimp: Pins 10, 11, 47, 49, 69 - K/K Core/Insulation Crimp: Pins 37, 38, 41 - J/J Release Tool/Test Probe: J-38125-213/J-35616-64B (L-BU)

ECM C1 Connector End View

Pin	Wire Color	Circuit No.	Function
1	OG	1786	Park/Neutral Signal
2-8	-	-	Not Used
9	WH	17	Stop Lamp Supply Voltage
10	PU	3120	HO2S High Signal (Bank 1 Sensor 2)
11	TN	3121	HO2S Low Signal (Bank 1 Sensor 2)
12	OG	380	A/C Refrigerant Pressure Sensor Signal
13	TN	5514	Low Reference
14-15	-	-	Not Used
16	PU	1589	Fuel Level Sensor Signal [- Primary]
17	D-BU	473	High Speed Cooling Fan Relay Control
18	BN	4	Accessory Voltage
19	PK	639	Ignition 1 Voltage
20	RD	540	Battery Positive Voltage
21-22	-	-	Not Used
23	PU	1272	Low Reference
24	D-GN	890	Fuel Tank Pressure Sensor Signal
25-26	-	-	Not Used
27	TN	2501	High Speed GMLAN Serial Data Bus-
28	TN	2500	High Speed GMLAN Serial Data Bus+
29	D-BU	1161	APP Sensor 1 Signal
30	BN	1271	Low Reference
31	OG	1057	Low Reference
32	L-BU	1162	APP Sensor 2 Signal
33	GY	705	5-Volt Reference 2
34	GY	2700	5-Volt Reference 3
35	-	-	Not Used
36	TN	1274	5-Volt Reference 2
37	TN	472	IAT Sensor Signal
38	TN	2760	Low Reference
39-40	-	-	Not Used
41	YE	492	MAF Sensor Signal
42-46	-	-	Not Used
47	PK	5290	Ignition 1 Voltage
48	BN	818	Vehicle Speed Signal
49	TN	3221	HO2S Low Signal (Bank 2 Sensor 2)
50	D-GN	465	Fuel Pump Relay Control [- Primary]
51	-	-	Not Used
52	PU	6386	Starter Relay Coil Control
53-55	-	-	Not Used
56	WH	1164	5-Volt Reference 3
57	-	-	Not Used
58	D-GN	335	Low Speed Cooling Fan Relay Control
59	BN	5069	Main Relay Coil Control
60	TN	2759	Low Reference
61	WH	1310	EVAP Canister Vent Solenoid Control
62	-	-	Not Used
63	D-GN	459	A/C Compressor Clutch Relay Control
64	OG	3223	HO2S Heater Low Control (Bank 2 Sensor 2)
65	GY	3122	HO2S Heater Low Control (Bank 1 Sensor 2)
66-67	-	-	Not Used
68	BN	419	MIL Control
69	PU	3220	HO2S High Signal (Bank 2 Sensor 2)
70-72	-	-	Not Used
73	BK	451	Ground