Engine Control Module (ECM) Connector End View C1

Fig 1: Engine Control Module (ECM) C1 Connector End View

Courtesy of GENERAL MOTORS CORP.

Engine Control Module (ECM) C1 Connector Parts Information

Connector Part Information

OEM: 15499466
Service: 88988360
Description: 73-Way F 0.64 2.8 Series, Sealed (BK)

Terminal Part Information

Pins: 7, 20
Terminal/Tray: 33467-0005/23
Core/Insulation Crimp: J/J
Release Tool/Test Probe: J-38125-213/J-35616-64B (L-BU)

Pins: 9, 12, 13, 18, 19, 26, 33, 34, 35, 36, 37, 40, 44, 47, 48, 49, 53, 54, 55
Terminal/Tray: 33467-0003/23
Core/Insulation Crimp: H/H
Release Tool/Test Probe: J-38125-213/J-35616-64B (L-BU)

Engine Control Module (ECM) C1 Connector Terminal Identification

Pin	Wire Color	Circuit No.	Function
1	OG/BK	1786	Park/Neutral Signal
2-8	-	-	Not Used
9	WH	17	Stop Lamp Switch Signal
10	PU	3120	HO2S High Signal Sensor 2
11	GY/WH	3122	HO2S Low Signal Sensor 2
12	OG/BK	380	A/C Refrigerant Pressure Sensor Signal
13	TN	5514	Low Reference
14	OG/BK	6014	Low Reference
15	GY/BK	433	BARO Sensor Signal
16	PU	30	Fuel Level Sensor Signal
17	D-BU	473	High Speed Cooling Fan Relay Control
18	D-BU	5985	Accessory Wake Up Serial Data
19	PK	439	Ignition 1 Voltage
20	RD/WH	540	Battery Positive Voltage
21	OG	6030	Brake Booster Vacuum Signal
22	YE/BK	6032	Low Reference
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/BK	2500	High Speed GMLAN Serial Data Bus +
29	D-BU	1161	APP Sensor 1 Signal
30	BN	1271	Low Reference
31	TN	2759	Low Reference
32	L-BU	1162	APP Sensor 2 Signal
33	GY	2709	5-Volt Reference 1
34	GY	2700	5-Volt Reference 1
35	WH/BK	2932	5-Volt Reference 2
36	TN	1274	5-Volt Reference 1
37	TN/BK	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/BK	5290	Ignition 1 Voltage
48-49	-	-	Not Used
50	D-GN/WH	465	Fuel Pump Relay Control
51	-	-	Not Used
52	YE	447	Starter Relay Coil Control
53	GY	6031	5-Volt Reference 2
54-55	-	-	Not Used
56	WH/BK	1164	5-Volt Reference 2
57	-	-	Not Used
58	D-GN	335	Low Speed Cooling Fan Relay Control
59	BN	5069	PWR/TRN Relay Control
60	-	-	Not Used
61	WH	1310	EVAP Canister Vent Solenoid Control
62	-	-	Not Used
63	D-GN/WH	459	A/C Compressor Clutch Relay Control
64	-	-	Not Used
65	TN/WH	3121	HO2S Heater Low Control Sensor 2
66-67	-	-	Not Used
68	BN/WH	419	MIL Control
69-72	-	-	Not Used
73	BK/WH	451	Ground