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

Courtesy of GENERAL MOTORS CORP.
Connector Part Information		1928403513 64-Way F Bosch (BK)
Pin	Wire Color	Circuit No.	Function
1	TN	407	Low Reference
2	OG	5280	HO2S Input Pump Current - Bank 2 Sensor 1
3	L-GN	5278	HO2S Input Pump Current - Bank 1 Sensor 1
4	OG	5275	CMP Sensor Signal - Intake Bank 1
5	GY	605	5-Volt Reference A
6	-	-	Not Used
7	TN	470	Low Reference
8	PU	486	TP Sensor Signal 2
9	D-GN/WH	2124	IC 4 Control
10	WH/BK	5039	CKP Sensor Signal
11	-	-	Not Used
12	OG/BK	5272	CMP Actuator Solenoid Control - Intake Bank 2
13	L-GN	5282	CMP Actuator Solenoid Control - Exhaust Bank 1
14	-	-	Not Used
15	TN	582	TAC Motor Control - 2
16	GY/WH	3113	HO2S Heater Low Control - Bank 1 Sensor 1
17	GY	1716	Low Reference
18	TN	1667	HO2S Low Reference - Bank 2 Sensor 1
19	PU/WH	1665	HO2S Reference Voltage - Bank 1 Sensor 1
20	D-GN	5273	CMP Sensor Signal - Exhaust Bank 1
21	GY	23	Generator Field Duty Cycle Signal
22	-	-	Not Used
23	YE	410	ECT Sensor Signal
24	-	-	Not Used
25	L-BU/WH	2126	IC 6 Control
26	OG/WH	2122	IC 2 Control
27-28	-	-	Not Used
29	PK	5284	CMP Actuator Solenoid Control - Intake Bank 1
30	WH/BK	5283	CMP Actuator Solenoid Control - Exhaust Bank 2
31	YE	581	TAC Motor Control - 1
32	L-GN	3212	HO2S Heater Low Control - Bank 2 Sensor 1
33	D-BU	496	Knock Sensor 1 Signal
34	PU	1666	HO2S Reference Voltage - Bank 2 Sensor 1
35	WH	5279	HO2S Pump Current - Bank 1 Sensor 1
36	PU	5274	CMP Sensor Signal - Exhaust Bank 2
37	BN	1174	Oil Level Switch Signal
38	D-GN/WH	357	Oil Temperature Sensor Signal
39	TN	2752	Low Reference
40	TN/BK	231	Oil Pressure Switch Signal
41	D-GN	2125	IC 5 Control
42	PU	2121	IC 1 Control
43	OG	225	Generator Turn On Signal
44	D-BU/BK	5041	IMRC Solenoid Control
45	D-BU/BK	844	Fuel Injector 4 Control
46	PK/BK	1746	Fuel Injector 3 Control
47	TN/WH	845	Fuel Injector 5 Control
48	L-GN/WH	428	EVAP Canister Purge Solenoid Control
49	GY/BK	1798	Drain Wire
50	L-BU	1876	Knock Sensor 2 Signal
51	PU/WH	5281	HO2S Pump Current - Bank 2 Sensor 1
52	TN	1664	HO2S Low Reference - Bank 1 Sensor 1
53	YE	5276	CMP Sensor Signal - Intake Bank 2
54	GY	2701	5-Volt Reference C
55	D-GN	485	TP Sensor Signal 1
56	OG/BK	5266	BARO Sensor Signal
57	GY	705	5-Volt Reference B
58	L-BU	2123	IC 3 Control
59	PU/WH	5024	CKP Sensor Low Reference
60-61	-	-	Not Used
62	L-GN/BK	1745	Fuel Injector 2 Control
63	TN	1744	Fuel Injector 1 Control
64	YE/BK	846	Fuel Injector 6 Control