Engine Control Module (ECM) Connector End Views

Engine Control Module (ECM) Connector End View C1

Courtesy of GENERAL MOTORS CORP.
Connector Part Information		1928403379 64-Way F Bosch (BK)
Pin	Wire Color	Circuit No.	Function
1	YE	581	TAC Motor Control - 1
2	YE	5036	HO2S Heater Low Control - Bank 2 Sensor 2
3	PK/BK	1746	Fuel Injector 3 Control
4	L-BU/WH	5041	IMRC Solenoid Control
5	D-GN/WH	428	EVAP Canister Purge Solenoid Control
6	TN	407	Low Reference
7	TN	1671	HO2S Low Signal - Bank 2 Sensor 2
8	BN/WH	633	CMP Sensor Signal
9	-	-	Not Used
10	WH/BK	5039	CKP Sensor High
11	-	-	Not Used
12	TN	1667	HO2S Low Signal - Bank 2 Sensor 1
13	-	-	Not Used
14	D-GN	2125	IC 5 Control
15	L-BU	2123	IC 3 Control
16	PU	2121	IC 1 Control
17	BN	582	TAC Motor Control - 2
18	PU/WH	5037	HO2S Heater Low Control - Bank 2 Sensor 1
19	TN	1744	Fuel Injector 1 Control
20	TN/WH	845	Fuel Injector 5 Control
21	-	-	Not Used
22	D-BU	496	Knock Sensor 1 Signal
23	PU/WH	1668	HO2S High Signal - Bank 1 Sensor 2
24	D-GN	485	TP Sensor 1 Signal
25	YE	410	ECT Sensor Signal
26	TN	2761	Low Reference
27	-	-	Not Used
28	PU/WH	1665	HO2S High Signal - Bank 1 Sensor 1
29	TN/BK	231	Oil Pressure Switch Signal
30	OG/WH	2122	IC 2 Control
31	D-GN/WH	2124	IC 4 Control
32	L-BU/WH	2126	IC 6 Control
33	YE	581	TAC Motor Control - 1
34	PU	5035	HO2S Heater Low Control - Bank 1 Sensor 2
35	L-GN/BK	1745	Fuel Injector 2 Control
36	YE/BK	846	Fuel Injector 6 Control
37	-	-	Not Used
38	L-BU	1876	Knock Sensor 2 Signal
39	PU	1670	HO2S High Signal - Bank 2 Sensor 2
40	PU	486	TP Sensor 2 Signal
41	-	-	Not Used
42	TN	2752	Low Reference
43	-	-	Not Used
44	PU	1666	HO2S High Signal - Bank 2 Sensor 1
45-48	-	-	Not Used
49	BN	582	TAC Motor Control - 2
50	L-BU	5038	HO2S Heater Low Control - Bank 1 Sensor 1
51	TN	2760	5-Volt Reference
52	L-BU/BK	844	Fuel Injector 4 Control
53	PU/BK	5042	IMTV Solenoid Control
54	GY	1716	Low Reference
55	TN/WH	1669	HO2S Low Signal - Bank 1 Sensor 2
56	YE	492	MAF Sensor Signal
57	TN	472	IAT Sensor Signal
58	GY	2701	5-Volt Reference
59	PU/WH	5024	CKP Sensor Low
60	TN/WH	1653	HO2S Low Signal - Bank 1 Sensor 1
61	-	-	Not Used
62	BK	1705	Shielded Ground
63-64	-	-	Not Used

Engine Control Module (ECM) Connector End View C2

Courtesy of GENERAL MOTORS CORP.
Connector Part Information		1928403514 64-Way F Bosch (BK)
Pin	Wire Color	Circuit No.	Function
1-3	-	-	Not Used
4	GY	23	Generator Field Duty Cycle Signal
5	GY	1884	Cruise Control Switch Signal
6	OG/BK	380	A/C Refrigerant Pressure Sensor Signal
7	TN	1274	5-Volt Reference
8	D-BU	1161	APP Sensor 1 Signal
9-10	-	-	Not Used
11	OG	225	Generator Turn On Signal
12	-	-	Not Used
13	D-GN/WH	459	A/C Compressor Clutch Relay Control
14	-	-	Not Used
15	RD/WH	1440	Battery Positive Voltage
16	PK/BK	5290	Ignition 1 Voltage
17	YE	5	Crank Voltage
18	WH	1310	EVAP Canister Vent Solenoid Control
19	BN	818	Vehicle Speed Signal
20	-	-	Not Used
21	BN/WH	379	CPP Switch Signal (M35)
22	L-BU	1937	Fuel Level Sensor Signal - Secondary
23	OG/BK	1786	Park/Neutral Signal (M82)
23	PU/WH	1035	Starter Relay Coil Supply Voltage (M35)
24	BN	1271	Low Reference
25	PU	1272	Low Reference
26	-	-	Not Used
27	OG	5371	BAS Relay Coil Supply Voltage
28	OG/BK	463	Requested Torque Signal
29	-	-	Not Used
30	D-GN/WH	465	Fuel Pump Relay Control
31	BN	5069	Main Relay Control
32	PK/BK	5290	Ignition 1 Voltage
33	D-BU	473	High Speed Cooling Fan Relay Control
34	TN	452	Low Reference
35	WH	121	Engine Speed Signal
36	-	-	Not Used
37	D-GN	890	Fuel Tank Pressure Sensor Signal
38	D-BU	1936	Fuel Level Sensor Signal - Primary
39	YE	447	Starter Relay Coil Control
40	L-BU	1162	APP Sensor 2 Signal
41	GY	847	Extended Travel Brake Switch Signal
42-43	-	-	Not Used
44	YE	400	Vehicle Speed Sensor Signal (M35)
45	WH	2500	High Speed GMLAN Serial Data Bus+ (M82)
46	BN/WH	419	MIL Control
47	PK	239	Ignition 1 Voltage
48	PK/BK	5290	Ignition 1 Voltage
49	-	-	Not Used
50	D-GN	335	Low Speed Cooling Fan Relay Control
51	TN	470	Low Reference
52	TN/BK	464	Delivered Torque Signal
53	WH/BK	5043	Keyword 2000 Serial Data (M82)
54	-	-	Not Used
55	PU	1807	Class 2 Serial Data
56	WH/BK	1164	5-Volt Reference
57	PU	1807	Class 2 Serial Data
58-59	-	-	Not Used
60	YE/BK	5270	Traction Control Data Signal
61	L-GN	2501	High Speed GMLAN Serial Data Bus- (M82)
62	PU	5128	Auxiliary Cooling Fan Relay Control (Export w/V92)
63	TN	596	5-Volt Reference
64	YE	343	Accessory Voltage