Engine Control Module (ECM) Connector End Views

WARNING: This page is about a different car, the 2006 Saturn Vue. However, it is still accessible from the selected car via links, so may be relevant.

Engine Control Module (ECM) C1

Courtesy of GENERAL MOTORS CORP.
Connector Part Information		1928403379 64-Way F Bosch Connector (BK)
Pin	Wire Color	Circuit No.	Function
1	PU	420	Cruise/Brake Switch Signal
2	RD/BK	380	A/C Refrigerant Pressure Sensor Signal
3	BK	2751	Low Reference
4-9	-	-	Not Used
10	TN	2501	CAN Low
11	TN/WH	2500	CAN High
12	-	-	Not Used
13	D-GN	335	High Speed Cooling Fan Relay Control
14	-	-	Not Used
15	TN/BK	231	Engine Oil Pressure Switch Signal
16-17	-	-	Not Used
18	PU/WH	821	VSS Signal (M/T)
19	PK	639	Ignition 1 Voltage
20	OG	1440	Battery Positive Voltage
21	PU	1272	5-Volt Reference - A
22	GY	2700	5-Volt Reference - A
23	L-BU	20	Stop Lamp Switch Signal
24-28	-	-	Not Used
29	D-GN/WH	465	Fuel Pump Relay Control
30	BN	5069	Main Relay Control
31	WH/BK	1164	5-Volt Reference - B
32-48	-	-	Not Used
49	D-BU	1161	APP Sensor 1 Signal
50	GY	397	Cruise On/Off Switch Signal (K34)
51	D-BU	84	Cruise Set/Coast Switch Signal (K34)
52	-	-	Not Used
53	BN	1271	Low Reference
54	GY/BK	87	Cruise Resume/Accel Switch Signal (K34)
55	-	-	Not Used
56	D-GN	459	Low Reference
57	D-BU	473	Low Speed Cooling Fan Relay Control
58	-	-	Not Used
59	BN/WH	2960	Keyword Serial Data
60	-	-	Not Used
61	L-BU	1162	APP Sensor 2 Signal
62-63	-	-	Not Used
64	TN	1274	Low Reference

Engine Control Module (ECM) C2

Courtesy of GENERAL MOTORS CORP.
Connector Part Information		1928403386 64-Way F Bosch Connector (BK)
Pin	Wire Color	Circuit No.	Function
1	YE	573	CKP Sensor Signal
2	PU	574	Low Reference
3	L-BU/BK	844	Fuel Injector 4 Control
4-6	-	-	Not Used
7	BK	1744	Fuel Injector 1 Control
8	-	-	Not Used
9	D-GN/WH	428	EVAP Canister Purge Solenoid Control
10	PK/BK	1746	Fuel Injector 3 Control
11	-	-	Not Used
12	OG/BK	469	Low Reference
13	BN	582	TAC Motor Control 2
14	BN	582	TAC Motor Control 2
15	YE	581	TAC Motor Control 1
16	YE	581	TAC Motor Control 1
17	-	-	Not Used
18	D-BU	496	Knock Sensor Signal
19	TN	472	IAT Sensor Signal
20	-	-	Not Used
21	D-GN	676	HO2S Heater Low Control - Sensor 1
22	GY	1716	Low Reference
23-25	-	-	Not Used
26	PU	486	TP Sensor 2 Signal
27	WH	423	IC Timing Control 1-4
28-30	-	-	Not Used
31	RD	225	Generator Turn On Signal
32	-	-	Not Used
33	RD	1792	Drain Wire
34	L-GN/BK	1745	Fuel Injector 2 Control
35	L-GN	432	MAP Sensor Signal
36	BK/WH	1704	Low Reference
37	-	-	Not Used
38	BK	2761	Low Reference
39	BK	2760	Low Reference
40	-	-	Not Used
41	YE	410	ECT Sensor Signal
42	PU	1589	Fuel Level Sensor Signal
43	BK	2752	Low Reference
44	BK/WH	1423	HO2S Heater Low Control - Sensor 2
45	GY	2701	5-Volt Reference - A
46	-	-	Not Used
47	WH	1310	EVAP Canister Vent Solenoid Control
48	-	-	Not Used
49	PU	1666	HO2S High Signal - Sensor 1
50	TN	1667	HO2S Low Signal - Sensor 1
51	PU/WH	1668	HO2S High Signal - Sensor 2
52	TN/WH	1669	HO2S Low Signal - Sensor 2
53	-	-	Not Used
54	BN/WH	633	CMP Sensor Signal
55	D-GN	485	TP Sensor 1 Signal
56	OG	406	IC Timing Control 2-3
57	L-BU/BK	1688	5-Volt Reference - B
58	GY	2704	5-Volt Reference - B
59	D-GN	890	FTP Sensor Signal
60	BK	2759	Low Reference
61	GY	2709	5-Volt Reference - A
62	-	-	Not Used
63	WH	5290	Ignition 1 Voltage
64	WH	5290	Ignition 1 Voltage