Engine Control Module (ECM) Connector End Views

WARNING: This page is about a different car, the 2004 Cadillac CTS. However, it is still accessible from the selected car via links, so may be relevant.

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