Engine Control Module Connector End Views. Buick Rainier 2006

For 1990-2009 cars only

Makes 🢒 Buick 🢒 2006 🢒 Rainier 🢒 Engine 🢒 Engine Mechanical - 5.3L 🢒 Engine Control Module Connector End Views

Connector 1:	Engine Control Module (ECM) C1
Connector 2:	Engine Control Module (ECM) C2
Connector 3:	Engine Control Module (ECM) C3

Engine Control Module (ECM) C1

Connector Part Information

OEM: 15491996
Service: 88953346
Description: 37-Way F Micro 64 Series Sealed (BU)

Terminal Part Information

Pins: 1, 2, 4, 7, 8, 10, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 26, 27, 29, 30, 31, 32, 33, 35, 36, 37, 41, 45, 46, 48, 49, 51, 52, 54, 55
Terminal/Tray: 15359541/4
Core/Insulation Crimp: M/M
Release Tool/Test Probe: 15381651-2/J-35616-64B (L-BU)

Engine Control Module (ECM) C1

Pin	Wire Color	Circuit No.	Function
1	TN/WH	2500	High Speed GMLAN Serial Data Bus (+)
2	TN	2501	High Speed GMLAN Serial Data Bus (-)
3	--	--	Not Available
4	BN/WH	419	MIL Control
5-6	--	--	Not Available
7	BN	1271	Low Reference
8	PU	1272	Low Reference
9	--	--	Not Available
10	YE	5991	Powertrain Relay Coil Control
11-12	--	--	Not Available
13	YE/BK	625	Starter Enable Relay Control
14	PK	839	Ignition 1 Voltage
15	YE	710	Class 2 Serial Data
16	D-GN	1049	Class 2 Serial Data
17	GY	397	Cruise Control On Switch Signal (K34)
18	PK	1020	Ignition 0 Voltage
19	PK	439	Ignition 1 Voltage
20	OG	240	Battery Positive Voltage
21	D-GN/WH	817	Vehicle Speed Signal
22	D-BU	1161	APP Sensor 1 Signal
23	D-BU	2364	Cooling Fan Speed Signal
24	D-GN	890	Fuel Tank Pressure Sensor Signal
25	--	--	Not Available
26	RD/BK	380	A/C Refrigerant Pressure Sensor Signal
27	D-BU	84	Cruise Control Set/Coast Switch Signal (K34)
28	--	--	Not Available
29	TN	1274	5-Volt Reference
30	GY	2700	5-Volt Reference
31	GY	2709	5-Volt Reference
32	L-BU	1320	CHMSL Supply Voltage (K34)
33	GY/BK	87	Cruise Control Resume/Accel Switch Signal (K34)
34	--	--	Not Available
35	WH/BK	1164	5-Volt Reference
36	WH/BK	2366	Cooling Fan Clutch Control
37	PU	1589	Fuel Level Sensor Signal
38-40	--	--	Not Available
41	L-BU	1162	APP Sensor 2 Signal
42-44	--	--	Not Available
45	D-GN/WH	465	Fuel Pump Relay Control
46	PU	420	TCC Brake Switch/Cruise Control Release Signal
47	--	--	Not Available
48	WH	121	Engine Speed Signal
49	YE/BK	1827	Vehicle Speed Signal
50	--	--	Not Available
51	OG/BK	1786	Ignition Lock Cylinder Control Actuator Signal
52	PU	806	Crank Voltage
53	--	--	Not Available
54	WH	1310	EVAP Canister Vent Solenoid Control
55	BK	2751	Low Reference
56	--	--	Not Available

Engine Control Module (ECM) C2

Connector Part Information

OEM: 15481009
Service: 88953274
Description: 56-Way F GT 280 Micro 64 Series Sealed (BK)

Terminal Part Information

Pins: 1, 2, 4, 5, 6, 7, 8, 9, 10, 13, 14, 15, 16, 17, 18, 20, 21, 24, 26, 29, 31, 33, 34, 35, 36, 37, 41, 43, 44, 45, 46, 48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 62, 63, 64, 65, 66, 68, 69, 70, 71, 72
Terminal/Tray: 15359541/4
Core/Insulation Crimp: M/M
Release Tool/Test Probe: 15381651-2/J-35616-64B (L-BU)

Pins: 73
Terminal/Tray: 15304720/19
Core/Insulation Crimp: 4/5
Release Tool/Test Probe: 15315247/J-35616-4A (PU)

Engine Control Module (ECM) C2

Pin	Wire Color	Circuit No.	Function
1	L-GN	3212	HO2S Heater Low Control - Bank 2 Sensor 1
2	BK/WH	3113	HO2S Heater Low Control - Bank 1 Sensor 1
3	--	--	Not Available
4	D-BU/WH	878	Fuel Injector 8 Control
5	BK	1744	Fuel Injector 1 Control
6	L-GN/BK	1745	Fuel Injector 2 Control
7	RD/BK	877	Fuel Injector 7 Control
8	L-BU/BK	844	Fuel Injector 4 Control
9	PK/BK	1746	Fuel Injector 3 Control
10	BK/WH	845	Fuel Injector 5 Control
11-12	--	--	Not Available
13	YE/BK	846	Fuel Injector 6 Control
14	YE/BK	1868	Low Reference
15	PK/BK	632	Low Reference
16	BN	2129	Low Reference
17	OG	5494	Cylinder 4 Shutoff Solenoid Control 2
18	GY	5493	Cylinder 6 Shutoff Solenoid Control 3
19	--	--	Not Available
20	OG/BK	469	Low Reference
21	BK	2755	Low Reference
22-23	--	--	Not Available
24	TN/WH	332	Oil Pressure Sensor Signal
25	--	--	Not Available
26	BN/WH	633	CMP Sensor Signal
27-28	--	--	Not Available
29	PU	486	TP Sensor 2 Signal
30	--	--	Not Available
31	D-GN	485	TP Sensor 1 Signal
32	--	--	Not Available
33	D-BU	5491	Cylinder 1 Shutoff Solenoid Control 1
34	L-GN	5492	Cylinder 7 Shutoff Solenoid Control 4
35	GY	2704	5-Volt Reference
36	BK/WH	1704	Low Reference
37	GY	2705	5-Volt Reference
38-40	--	--	Not Available
41	L-BU/BK	1688	5-Volt Reference
42	--	--	Not Available
43	L-GN	1867	12-Volt Reference
44	RD	631	12-Volt Reference
45	GY	23	Generator Field Duty Cycle Signal
46	L-GN	432	MAP Sensor Signal
47	--	--	Not Available
48	PU/WH	1665	HO2S High Signal - Bank 1 Sensor 1
49	TN	1664	HO2S Low Signal - Bank 1 Sensor 1
50	D-GN/WH	428	EVAP Canister Purge Solenoid Control
51	PU	1666	HO2S High Signal - Bank 2 Sensor 1
52	BK	2761	Low Reference
53	RD	2127	IC 7 Control
54	PU	2121	IC 1 Control
55	YE	410	ECT Sensor Signal
56	RD	225	Generator Turn On Signal
57	L-BU/WH	2126	IC 6 Control
58	D-GN/WH	2124	IC 4 Control
59	D-GN	2125	IC 5 Control
60	BN	582	TAC Motor Control - 2
61	L-BU	2123	IC 3 Control
62	D-BU/WH	1869	CKP Sensor Signal
63	YE	581	TAC Motor Control - 1
64	BN/WH	2130	Low Reference
65	PU/WH	2128	IC 8 Control
66	RD/WH	2122	IC 2 Control
67	--	--	Not Available
68	D-BU	496	KS 1 Signal
69	GY	1716	KS 1 Signal
70	TN	1667	HO2S Low Signal - Bank 2 Sensor 1
71	GY	2303	KS 2 Signal
72	L-BU	1876	KS 2 Signal
73	BK	450	Ground

Engine Control Module (ECM) C3

Connector Part Information

OEM: 15481007
Service: 88953347
Description: 20-Way F Micro 64 Series Sealed (GY)

Terminal Part Information

Pins: 2, 3, 6, 11, 15, 18, 19, 20, 21, 24, 29, 33, 34, 35, 36, 38, 45, 47, 49, 51
Terminal/Tray: 15359541/4
Core/Insulation Crimp: M/M
Release Tool/Test Probe: 15381651-2/J-35616-64B (L-BU)

Engine Control Module (ECM) C3

Pin	Wire Color	Circuit No.	Function
1	--	--	Not Available
2	BN	2391	HO2S Heater Low Control - Bank 1 Sensor 2
3	RD/WH	3223	HO2S Heater Low Control - Bank 2 Sensor 2
4-5	--	--	Not Available
6	D-BU	1809	Brake Booster Vacuum Sensor Signal
7-10	--	--	Not Available
11	YE	492	MAF Sensor Signal
12-14	--	--	Not Available
15	GY	416	5-Volt Reference
16-17	--	--	Not Available
18	TN/WH	1669	HO2S Low Signal - Bank 1 Sensor 2
19	PU/WH	1668	HO2S High Signal - Bank 1 Sensor 2
20	PU	1670	HO2S High Signal - Bank 2 Sensor 2
21	TN	1671	HO2S Low Signal - Bank 2 Sensor 2
22-23	--	--	Not Available
24	BK	2760	Low Reference
25-28	--	--	Not Available
29	GY/BK	1694	4WD Low Signal
30-32	--	--	Not Available
33	GY	2365	Low Reference
34	TN	472	IAT Sensor Signal
35	GY	597	5-Volt Reference
36	BK	452	Low Reference
37	--	--	Not Available
38	TN/BK	464	Delivered Torque Signal
39-44	--	--	Not Available
45	YE	400	Signal High - Front
46	--	--	Not Available
47	OG/BK	463	Requested Torque Signal
48	--	--	Not Available
49	BK	2759	Low Reference
50	--	--	Not Available
51	D-GN/WH	459	A/C Compressor Clutch Relay Control
52-56	--	--	Not Available